RAM 2500 (2022 year). Manual in english — page 18

284

SAFETY

If the ABS Warning Light is on, the brake system

should be serviced as soon as possible to restore

the benefits of Anti-Lock Brakes. If the ABS

Warning Light does not come on when the ignition

is placed in the ON/RUN mode, have the light

repaired as soon as possible.

E

LECTRONIC

B

RAKE

C

ONTROL

(EBC)

S

YSTEM

Your vehicle is equipped with an advanced

Electronic Brake Control (EBC) system. This system

includes Anti-Lock Brake System (ABS), Brake

Assist System (BAS), Electronic Brake Force

Distribution (EBD), Electronic Roll Mitigation

(ERM), Electronic Stability Control (ESC), Hill Start

Assist (HSA), and Traction Control System (TCS).

These systems work together to enhance both

vehicle stability and control in various driving

conditions.
Your vehicle may also be equipped with Trailer

Sway Control (TSC) and Hill Descent Control (HDC).

Brake Assist System (BAS)

The BAS is designed to optimize the vehicle’s

braking capability during emergency braking

maneuvers. The system detects an emergency

braking situation by sensing the rate and amount

of brake application and then applies optimum

pressure to the brakes. This can help reduce

braking distances. The BAS complements the

Anti-Lock Brake System (ABS). Applying the brakes

very quickly results in the best BAS assistance. To

receive the benefit of the system, you must apply

continuous braking pressure during the stopping

sequence (do not “pump” the brakes). Do not

reduce brake pedal pressure unless braking is no

longer desired. Once the brake pedal is released,

the BAS is deactivated.

Brake System Warning Light

The red Brake System Warning Light will turn on

when the ignition is placed in the ON/RUN mode

and may stay on for as long as four seconds.
If the Brake System Warning Light remains on or

comes on while driving, it indicates that the brake

system is not functioning properly and that

immediate service is required. If the Brake System

Warning Light does not come on when the ignition

is placed in the ON/RUN mode, have the light

repaired as soon as possible.

Electronic Brake Force Distribution (EBD)

EBD manages the distribution of the braking torque

between the front and rear axles by limiting braking

pressure to the rear axle. This is done to prevent

overslip of the rear wheels to avoid vehicle

instability, and to prevent the rear axle from entering

Anti-Lock Brake System (ABS) before the front axle.

Electronic Roll Mitigation (ERM)

ERM anticipates the potential for wheel lift by

monitoring the driver’s steering wheel input and

the speed of the vehicle. When Electronic Roll

Mitigation (ERM) determines that the rate of

change of the steering wheel angle and vehicle’s

speed are sufficient to potentially cause wheel lift,

it then applies the appropriate brake and may also

reduce engine power to lessen the chance that

wheel lift will occur. ERM can only reduce the

chance of wheel lift occurring during severe or

evasive driving maneuvers; it cannot prevent

wheel lift due to other factors, such as road

conditions, leaving the roadway, or striking objects

or other vehicles.

NOTE:

ERM is disabled any time the ESC is in “Full Off”

mode (if equipped). For a complete explanation of

the available ESC modes, see

Ú

page 285.

WARNING!

The Brake Assist System (BAS) cannot prevent

the natural laws of physics from acting on the

vehicle, nor can it increase the traction afforded

by prevailing road conditions. BAS cannot

prevent collisions, including those resulting from

excessive speed in turns, driving on very slippery

surfaces, or hydroplaning. The capabilities of a

BAS-equipped vehicle must never be exploited in

a reckless or dangerous manner, which could

jeopardize the user's safety or the safety of

others.

SAFETY

285

(Continued)

Electronic Stability Control (ESC)

ESC enhances directional control and stability of

the vehicle under various driving conditions.

Electronic Stability Control (ESC) corrects for

oversteering or understeering of the vehicle by

applying the brake of the appropriate wheel(s) to

counteract the above conditions. Engine power

may also be reduced to help the vehicle maintain

the desired path.



Oversteer — when the vehicle is turning more

than appropriate for the steering wheel position.



Understeer — when the vehicle is turning less

than appropriate for the steering wheel position.

ESC uses sensors in the vehicle to determine the

vehicle path intended by the driver and compares it

to the actual path of the vehicle. When the actual

path does not match the intended path, ESC applies

the brake of the appropriate wheel to assist in

counteracting the oversteer or understeer condition.
The ESC Activation/Malfunction Indicator Light

located in the instrument cluster will start to flash

as soon as the ESC system becomes active. The

ESC Activation/Malfunction Indicator Light also

flashes when the TCS is active. If the ESC

Activation/Malfunction Indicator Light begins to

flash during acceleration, ease up on the

accelerator and apply as little throttle as possible.

Be sure to adapt your speed and driving to the

prevailing road conditions.

ESC Operating Modes

Depending upon model and mode of operation, the

ESC system may have multiple operating modes.
ESC On
This is the normal operating mode for the ESC.

Whenever the vehicle is started, the ESC system

will be in this mode. This mode should be used for

most driving conditions. Alternate ESC modes

should only be used for specific reasons as noted

in the following paragraphs.

WARNING!

Many factors, such as vehicle loading, road condi

-

tions and driving conditions, influence the chance

that wheel lift or rollover may occur. ERM cannot

prevent all wheel lift or rollovers, especially those

that involve leaving the roadway or striking objects

or other vehicles. The capabilities of an

ERM-equipped vehicle must never be exploited in

a reckless or dangerous manner which could jeop

-

ardize the user's safety or the safety of others.

WARNING!



Electronic Stability Control (ESC) cannot

prevent the natural laws of physics from acting

on the vehicle, nor can it increase the traction

afforded by prevailing road conditions. ESC

cannot prevent accidents, including those

resulting from excessive speed in turns, driving

on very slippery surfaces, or hydroplaning. ESC

also cannot prevent accidents resulting from

loss of vehicle control due to inappropriate

driver input for the conditions. Only a safe,

attentive, and skillful driver can prevent acci

-

dents. The capabilities of an ESC equipped

vehicle must never be exploited in a reckless or

dangerous manner which could jeopardize the

user’s safety or the safety of others.



Vehicle modifications, or failure to properly

maintain your vehicle, may change the

handling characteristics of your vehicle, and

may negatively affect the performance of the

ESC system. Changes to the steering system,

suspension, braking system, tire type and size

or wheel size may adversely affect ESC perfor

-

mance. Improperly inflated and unevenly worn

tires may also degrade ESC performance. Any

vehicle modification or poor vehicle mainte

-

nance that reduces the effectiveness of the

ESC system can increase the risk of loss of

vehicle control, vehicle rollover, personal

injury and death.

WARNING!

6

286

SAFETY

(Continued)

Partial Off
This mode may be useful if the vehicle becomes

stuck. This mode may modify TCS and ESC

thresholds for activation, which allows for more

wheel spin than normally allowed.
To enter the “Partial Off” mode, momentarily push

the ESC OFF button and the ESC OFF Indicator

Light will illuminate. To turn the ESC on again,

momentarily push the ESC OFF button and the ESC

OFF Indicator Light will turn off.

NOTE:

For vehicles with multiple partial ESC modes, the

push and release of the button will toggle the ESC

modes. Multiple attempts may be required to

return to "ESC On" mode.

Full Off — If Equipped
This mode is intended for off-highway or off-road

use only and should not be used on any public

roadways. In this mode, TCS and ESC features are

turned off. To enter the “Full Off” mode, push and

hold the ESC OFF button for five seconds while the

vehicle is stopped with the engine running. After five

seconds, a chime will sound, the ESC OFF Indicator

Light will illuminate, and the “ESC OFF” message

will display in the instrument cluster. To turn ESC on

again, momentarily push the ESC OFF button.

NOTE:

System may switch from ESC “Full Off” to “Partial

Off” mode when vehicle exceeds a predetermined

speed. When the vehicle speed slows below the

predetermined speed the system will return to ESC

“Full Off”.
ESC modes may also be affected by drive modes (if

equipped).

ESC Activation/Malfunction Indicator Light

And ESC OFF Indicator Light

The ESC Activation/Malfunction Indicator

Light in the instrument cluster will come

on when the ignition is placed in the ON/

RUN mode. It should go out with the

engine running. If the ESC Activation/Malfunction

Indicator Light comes on continuously with the

engine running, a malfunction has been detected

in the ESC system. If this light remains on after

several ignition cycles, and the vehicle has been

driven several miles (kilometers) at speeds greater

than 30 mph (48 km/h), see an authorized dealer

as soon as possible to have the problem

diagnosed and corrected.
The ESC Activation/Malfunction Indicator Light

(located in the instrument cluster) starts to flash as

soon as the tires lose traction and the ESC system

WARNING!



When in “Partial Off” mode, the TCS function

-

ality of ESC, except for the limited slip feature

described in the TCS section, has been

disabled and the ESC OFF Indicator Light will

be illuminated. When in “Partial Off” mode,

the engine power reduction feature of TCS is

disabled, and the enhanced vehicle stability

offered by the ESC system is reduced.



Trailer Sway Control (TSC) is disabled when

the ESC system is in the “Partial Off” mode.

WARNING!



In the ESC “Full Off” mode, the engine torque

reduction and stability features are disabled.

Therefore, enhanced vehicle stability offered

by the ESC system is unavailable. In an emer

-

gency evasive maneuver, the ESC system will

not engage to assist in maintaining stability.

ESC “Full Off” mode is intended for

off-highway or off-road use only.



The Electronic Stability Control (ESC) cannot

prevent the natural laws of physics from

acting on the vehicle, nor can it increase the

traction afforded by prevailing road condi

-

tions. ESC cannot prevent all accidents,

including those resulting from excessive

speed in turns, driving on very slippery

surfaces, or hydroplaning. ESC also cannot

prevent collisions.

WARNING!

SAFETY

287

becomes active. The ESC Activation/Malfunction

Indicator Light also flashes when TCS is active. If

the ESC Activation/Malfunction Indicator Light

begins to flash during acceleration, ease up on the

accelerator and apply as little throttle as possible.

Be sure to adapt your speed and driving to the

prevailing road conditions.

The ESC OFF Indicator Light indicates

that the Electronic Stability Control (ESC)

is in a reduced mode.

NOTE:



The ESC Activation/Malfunction Indicator Light

and the ESC OFF Indicator Light come on

momentarily each time the ignition is placed in

the ON position.



Each time the ignition is placed in the ON posi

-

tion, the ESC system will be on even if it was

turned off previously.



The ESC system will make buzzing or clicking

sounds when it is active. This is normal; the

sounds will stop when ESC becomes inactive

following the maneuver that caused the ESC

activation.

Hill Descent Control (HDC) — If Equipped

HDC is intended for low speed off-road driving

while in 4WD Low. HDC maintains vehicle speed

while descending hills during various driving

situations. HDC controls vehicle speed by actively

controlling the brakes.

HDC Has Three States:
1. Off (feature is not enabled and will not

activate).

2. Enabled (feature is enabled and ready but

activation conditions are not met, or driver is

actively overriding with brake or throttle

application).

3. Active (feature is enabled and actively

controlling vehicle speed).

Enabling HDC
HDC is enabled by pushing the HDC switch, but the

following conditions must also be met to enable

HDC:



The driveline is in 4WD Low.



The vehicle speed is below 5 mph (8 km/h).



The parking brake is released.



The driver door is closed.

Activating HDC
Once HDC is enabled it will activate automatically

if driven down a grade of sufficient magnitude. The

set speed for HDC is selectable by the driver, and

can be adjusted by using the gear shift +/-. The

following summarizes the HDC set speeds:

HDC Target Set Speeds



P = No set speed. HDC may be enabled but will

not activate.



R = 0.6 mph (1 km/h)



N = 1.2 mph (2 km/h)



D = 0.6 mph (1 km/h)



1st = 0.6 mph (1 km/h)



2nd = 1.2 mph (2 km/h)



3rd = 1.8 mph (3 km/h)



4th = 2.5 mph (4 km/h)



5th = 3.1 mph (5 km/h)



6th = 3.7 mph (6 km/h)



7th = 4.3 mph (7 km/h)



8th = 5.0 mph (8 km/h)



9th = 5.6 mph (9 km/h) – If Equipped

NOTE:

During HDC the +/- shifter input is used for HDC

target speed selection, but will not affect the gear

chosen by the transmission. When actively

controlling HDC the transmission will shift appro

-

priately for the driver-selected set speed and corre

-

sponding driving conditions.
Driver Override
The driver may override HDC activation with

throttle or brake application at any time.

6

288

SAFETY

Deactivating HDC
HDC will be deactivated but remain available if any

of the following conditions occur:



Driver overrides HDC set speed with throttle or

brake application.



Vehicle speed exceeds 20 mph (32 km/h) but

remains below 40 mph (64 km/h).



Vehicle is on a downhill grade of insufficient

magnitude, is on level ground, or is on an uphill

grade.



Vehicle is shifted to PARK.

Disabling HDC
HDC will be deactivated and disabled if any of the

following conditions occur:



The driver pushes the HDC switch.



The driveline is shifted out of 4WD Low.



The parking brake is applied.



The driver door opens.



The vehicle is driven greater than 20 mph

(32 km/h) for greater than 70 seconds.



The vehicle is driven greater than 40 mph

(64 km/h) (HDC exits immediately).



HDC detects excessive brake temperature.

Feedback To The Driver
The instrument cluster has an HDC icon and the

HDC switch has an LED icon, which offers feedback

to the driver about the state HDC is in.



The cluster icon and switch lamp will illuminate

and remain on solid when HDC is enabled or

activated. This is the normal operating condition

for HDC.



The cluster icon and switch lamp will flash for

several seconds then extinguish when the driver

pushes the HDC switch but enable conditions

are not met.



The cluster icon and switch lamp will flash for

several seconds then extinguish when HDC

disables due to excess speed.



The cluster icon and switch lamp will flash when

HDC deactivates due to overheated brakes. The

flashing will stop and HDC will activate again

once the brakes have cooled sufficiently.

Hill Start Assist (HSA)

HSA is designed to mitigate roll back from a

complete stop while on an incline. If the driver

releases the brake while stopped on an incline,

HSA will continue to hold the brake pressure for a

short period. If the driver does not apply the

throttle before this time expires, the system will

release brake pressure and the vehicle will roll

down the hill as normal.
The following conditions must be met in order for

HSA to activate:



The feature must be enabled.



The vehicle must be stopped.



The parking brake must be off.



The driver door must be closed.



The vehicle must be on a sufficient grade.



The gear selection must match vehicle uphill

direction (i.e., vehicle facing uphill is in forward

gear; vehicle backing uphill is in REVERSE gear).



HSA will work in REVERSE gear and all forward

gears. The system will not activate if the trans

-

mission is in PARK or NEUTRAL. For vehicles

equipped with a manual transmission, if the

clutch is pressed, HSA will remain active.

WARNING!

HDC is only intended to assist the driver in

controlling vehicle speed when descending hills.

The driver must remain attentive to the driving

conditions and is responsible for maintaining a

safe vehicle speed.

SAFETY

289

Disabling And Enabling HSA

This feature can be turned on or turned off. To

change the current setting, proceed as follows:



If disabling HSA using your instrument cluster

display, see

Ú

page 103.



If disabling HSA using Uconnect Settings, see

Ú

page 232.

Towing With HSA

HSA will also provide assistance to mitigate roll

back while towing a trailer.

Ready Alert Braking (RAB)

RAB may reduce the time required to reach full

braking during emergency braking situations. It

anticipates when an emergency braking situation

may occur by monitoring how fast the throttle is

released by the driver. The Electronic Brake

Control system will prepare the brake system for a

panic stop.

Traction Control System (TCS)

The TCS monitors the amount of wheel spin of

each of the driven wheels. If wheel spin is

detected, the Traction Control System (TCS) may

apply brake pressure to the spinning wheel(s) and/

or reduce engine power to provide enhanced

acceleration and stability. A feature of the TCS,

Brake Limited Differential (BLD) functions similarly

to a limited slip differential and controls the wheel

spin across a driven axle. If one wheel on a driven

axle is spinning faster than the other, the system

will apply the brake of the spinning wheel. This will

allow more engine power to be applied to the

wheel that is not spinning. BLD may remain

enabled even if TCS and Electronic Stability Control

(ESC) are in reduced modes.

Trailer Sway Control (TSC)

TSC uses sensors in the vehicle to recognize an

excessively swaying trailer and will take the

appropriate actions to attempt to stop the sway.

NOTE:

TSC cannot stop all trailers from swaying. Always

use caution when towing a trailer and follow the

trailer tongue weight recommendations

Ú

page 213.

WARNING!

There may be situations where the Hill Start

Assist (HSA) will not activate and slight rolling

may occur, such as on minor hills or with a

loaded vehicle, or while pulling a trailer. HSA is

not a substitute for active driving involvement. It

is always the driver’s responsibility to be

attentive to distance to other vehicles, people,

and objects, and most importantly brake

operation to ensure safe operation of the vehicle

under all road conditions. Your complete

attention is always required while driving to

maintain safe control of your vehicle. Failure to

follow these warnings can result in a collision or

serious personal injury.

WARNING!



If you use a trailer brake controller with your

trailer, the trailer brakes may be activated and

deactivated with the brake switch. If so, there

may not be enough brake pressure to hold

both the vehicle and the trailer on a hill when

the brake pedal is released. In order to avoid

rolling down an incline while resuming accel

-

eration, manually activate the trailer brake or

apply more vehicle brake pressure prior to

releasing the brake pedal.



HSA is not a parking brake. Always apply the

parking brake fully when exiting your vehicle.

Also, be certain to place the transmission in

PARK.



Failure to follow these warnings can result in a

collision or serious personal injury.

6

290

SAFETY

When TSC is functioning, the ESC Activation/

Malfunction Indicator Light will flash, the engine

power may be reduced and you may feel the

brakes being applied to individual wheels to

attempt to stop the trailer from swaying. TSC is

disabled when the ESC system is in the “Partial

Off” or “Full Off” modes.

AUXILIARY DRIVING SYSTEMS

B

LIND

S

POT

M

ONITORING

(BSM) —

I

F

E

QUIPPED

BSM uses two radar sensors, located inside the

taillights, to detect highway licensable vehicles

(automobiles, trucks, motorcycles, etc.) that enter

the blind spot zones from the rear/front/side of

the vehicle.

Rear Detection Zones

When the vehicle is started, the BSM Warning Light

will momentarily illuminate in both outside

rearview mirrors to let the driver know that the

system is operational. The BSM system sensors

operate when the vehicle is in any forward gear

and enters standby mode when the vehicle is in

PARK.
The BSM detection zone covers approximately one

lane width on both sides of the vehicle 12 ft

(3.8 m). The zone length starts at the outside

rearview mirror and extends approximately 10 ft

(3 m) beyond the rear fascia/bumper of the

vehicle. The BSM system monitors the detection

zones on both sides of the vehicle when the vehicle

speed reaches approximately 6 mph (10 km/h) or

higher and will alert the driver of vehicles in these

areas.

NOTE:



The BSM system DOES NOT alert the driver

about rapidly approaching vehicles that are

outside the detection zones.



The BSM system may experience dropouts

(blinking on and off) of the side mirror warning

indicator lamps when a motorcycle or any small

object remains at the side of the vehicle for

extended periods of time (more than a couple of

seconds).

The vehicle’s taillights, where the radar sensors

are located, must remain free of snow, ice, and

dirt/road contamination so that the BSM system

can function properly. Do not block the taillights

with foreign objects (bumper stickers, bicycle

racks, etc.).
The system may also detect blockage if the vehicle

is operated in areas with extremely low radar

returns such as a desert or parallel to a large

elevation drop. If blockage is detected, a “Blind

Spot Temporarily Unavailable, Wipe Rear Corners”

message will display in the cluster, both mirror

lights will illuminate, and BSM and RCP alerts will

not occur. This is normal operation. The system will

automatically recover and resume function when

the condition clears.

WARNING!

If TSC activates while driving, slow the vehicle

down, stop at the nearest safe location, and

adjust the trailer load to eliminate trailer sway.

SAFETY

291

Radar Sensor Locations

If the system detects degraded performance due

to contamination or foreign objects, a message will

warn you of a blocked sensor and the warning

indicators in the side view mirrors will be on. The

warning indicators will remain illuminated until

blockage clearing conditions are met. First clear

the taillights around the sensors of the blockage.

After removing the blockage, cycle the ignition

from ON to OFF and then back ON.
If the blockage message is still present after

cycling the ignition and driving in traffic, check

again for a blockage.

The BSM system notifies the driver of objects in the

detection zones by illuminating the BSM Warning

Light located in the outside mirrors in addition to

sounding an audible (chime) alert and reducing the

radio volume

Ú

page 293.

Warning Light Location

The BSM system monitors the detection zone from

three different entry points (side, rear, front) while

driving to see if an alert is necessary. The BSM

system will issue an alert during these types of

zone entries.

Entering From The Side
Vehicles that move into your adjacent lanes from

either side of the vehicle.

Side Monitoring

6

292

SAFETY

Entering From The Rear
Vehicles that come up from behind your vehicle on

either side and enter the rear detection zone with

a relative speed of less than 30 mph (48 km/h).

Rear Monitoring

Overtaking Traffic
If you pass another vehicle slowly with a relative

speed less than 15 mph (24 km/h) and the vehicle

remains in the blind spot for approximately

1.5 seconds, the warning light will be illuminated.

If the difference in speed between the two vehicles

is greater than 15 mph (24 km/h), the warning

light will not illuminate.

Overtaking/Approaching

Overtaking/Passing

The BSM system is designed not to issue an alert

on stationary objects such as guardrails, posts,

walls, foliage, berms, snow banks, car washes, etc.

However, occasionally the system may alert on

such objects. This is normal operation and your

vehicle does not require service.

The BSM system will not alert you of objects that

are traveling in the opposite direction of the vehicle

in adjacent lanes

Ú

page 447.

Opposing Traffic

WARNING!

The Blind Spot Monitoring system is only an aid

to help detect objects in the blind spot zones.

The BSM system is not designed to detect

pedestrians, bicyclists, or animals. Even if your

vehicle is equipped with the BSM system, always

check your vehicle’s mirrors, glance over your

shoulder, and use your turn signal before

changing lanes. Failure to do so can result in

serious injury or death.

SAFETY

293

Rear Cross Path (RCP)

RCP is intended to aid the driver when backing out

of parking spaces where their vision of oncoming

vehicles may be blocked. Proceed slowly and

cautiously out of the parking space until the rear

end of the vehicle is exposed. The RCP system will

then have a clear view of the cross traffic and if an

oncoming vehicle is detected, alert the driver.

RCP Detection Zones

RCP monitors the rear detection zones on both

sides of the vehicle, for objects that are moving

toward the side of the vehicle with a minimum

speed of approximately 3 mph (5 km/h), to objects

moving a maximum of approximately 20 mph

(32 km/h), such as in parking lot situations.
When RCP is on and the vehicle is in REVERSE, the

driver is alerted using both the visual and audible

alarms, including reducing the radio volume.

NOTE:

In a parking lot situation, oncoming vehicles can be

blocked by vehicles parked on either side. If the

sensors are blocked by other structures or

vehicles, the system will not be able to alert the

driver.

Blind Spot Modes

Blind Spot Alert has three selectable modes of

operation that are available in the Uconnect

system.
For further information, see

Ú

page 232.

Blind Spot Alert Lights Only
When operating in Blind Spot Alert Lights Only

mode, the BSM system will provide a visual alert in

the appropriate side view mirror based on a

detected object. However, when the system is

operating in Rear Cross Path (RCP) mode, the

system will respond with both visual and audible

alerts when a detected object is present.

Whenever an audible alert is requested, the radio

is muted.
Blind Spot Alert Lights/Chime
When operating in Blind Spot Alert Lights/Chime

mode, the BSM system will provide a visual alert in

the appropriate side view mirror based on a

detected object. If the turn signal is then activated,

and it corresponds to an alert present on that side

of the vehicle, an audible chime will also be

sounded. Whenever a turn signal and detected

object are present on the same side at the same

time, both the visual and audible alerts will be

issued. In addition to the audible alert the radio (if

on) will also be muted.

NOTE:

Whenever an audible alert is requested by the

BSM system, the radio is also muted.
When the system is in RCP, the system shall

respond with both visual and audible alerts when a

detected object is present. Whenever an audible

alert is requested, the radio is also muted. Turn/

hazard signal status is ignored; the RCP state

always requests the chime.

WARNING!

Rear Cross Path Detection (RCP) is not a backup

aid system. It is intended to be used to help a

driver detect an oncoming vehicle in a parking

lot situation. Drivers must be careful when

backing up, even when using RCP. Always check

carefully behind your vehicle, look behind you,

and be sure to check for pedestrians, animals,

other vehicles, obstructions, and blind spots

before backing up. Failure to do so can result in

serious injury or death.

6

294

SAFETY

Blind Spot Alert Off
When the BSM system is turned off there will be no

visual or audible alerts from either the BSM or RCP

systems.

NOTE:

The BSM system will store the current operating

mode when the vehicle is shut off. Each time the

vehicle is started the previously stored mode will

be recalled and used.

Trailer Merge Assist

NOTE:

When Trailer Merge Assist is activated, Rear Cross

Path is disabled.

NOTE:

When a trailer with an electric brake is connected

to the vehicle, the instrument cluster display will

provide a menu to allow a selection of the trailer

type. There will be two options provided: Conven

-

tional and Goose/Fifth Wheel. Goose/Fifth Wheel

Trailer is incompatible and when selected, the

BSM system will disable until the trailer is discon

-

nected. If the wrong option is selected, the system

can be reset by either disconnecting and recon

-

necting the trailer harness connector or disabling

then re-enabling the Blind Spot Monitoring system

in the customer settings in the Uconnect system.

This will prompt the trailer selection menu again to

allow for the correct selection.
Trailer Merge Assist is a function of the Blind Spot

Monitoring (BSM) system that extends the blind

spot zone to work while pulling a trailer. Trailer

Merge Assist consists of three sub functions:



Automatic Trailer Detection



Trailer Length Detection



Trailer Merge Warning

Blind Spot Zones With Trailer Merge Assist

Automatic Trailer Detection
There are two modes of operation for the detection

of the trailer length:



Automatic Mode

— When “Auto Mode” is

selected, the system will use the blind spot

sensors to automatically determine the pres

-

ence and length of a trailer. The presence of a

trailer will be detected using the blind spot radar

within 90 seconds of forward movement of the

vehicle. The vehicle must be moving above

6 mph (10 km/h) to activate the feature. Once

the trailer has been detected, the system will

default to the maximum blind spot zone until the

length has been verified. You will see “Auto” in

the instrument panel cluster

.



Maximum Mode

— When “Max Mode” is

selected, the system will default to the

maximum blind spot zone regardless of what

size trailer is attached

.

NOTE:

Selected setting is stored when the ignition is

placed in the OFF position. To change this setting,

it must be selected through the Uconnect Settings

Ú

page 232.

1 — Vehicle
2 — Trailer

SAFETY

295

Trailer Length Detection
Once the trailer presence has been established,

the trailer length will be established (by making a

90 degree turn) and then the trailer length

category (e.g. 10-20 ft (3 m to 6 m)) will be

displayed. This can take up to 30 seconds after

completing the turn.

NOTE:

During the same ignition cycle, if the vehicle is at a

standstill for a minimum of 90 seconds, a new

“trailer detection request” is enabled by the

system once the vehicle resumes motion.
Maximum length supported by the Trailer Merge

Assist feature is 39.5 ft (12 m). Trailer length is

considered the forward most portion of the trailer

hitch to the rearward most portion of the body,

fascia/bumper, or ramp of the trailer.
Maximum width supported by the Trailer Merge

Assist feature is 8.5 ft (2.59 m). Trailer width is

measured at the widest portion of the trailer and

may include wheels, tires, finders, or rails.

NOTE:

Fifth wheel or gooseneck trailers are not supported

by Trailer Merge Assist.

Trailer Length Detection

Trailer length will be identified and placed into one

of the following categories:



Trailer length up to 10 ft (3 m) — Blind Spot zone

will be adjusted to 10 ft (3 m)

.



Trailer length between 10 ft to 20 ft (3 m to

6 m) — Blind Spot zone will be adjusted to 20 ft

(6 m)

.



Trailer length between 20 ft to 30 ft (6 m to

9 m) — Blind Spot zone will be adjusted to 30 ft

(9 m)

.



Trailer length between 30 ft and 39.5 ft (9 m to

12 m) — Blind Spot zone will be adjusted to Max

distance

.

NOTE:

Trailer length is determined within +/- 3 ft (1 m) of

actual length. Trailers that are the same size as the

category limit, 10/20/30 ft (3/6/9 m), could be

subject to being placed in the category above or

below the correct one.
Trailer Merge Warning
Trailer Merge Warning is the extension of the blind

spot function to cover the length of the trailer, plus

a safety margin, to warn the driver when there is a

vehicle in the adjacent lane. The driver is alerted by

the illumination of the BSM Warning Light located

in the outside mirror on the side the other vehicle

is detected on. In addition, an audible (chime) alert

will be heard and radio volume reduced

Ú

page 293.

NOTE:



The Trailer Merge Alert system DOES NOT alert

the driver about rapidly approaching vehicles

that are outside the detection zones.



The BSM system may experience dropouts

(blinking on and off) of the side mirror warning

indicator lamps when a motorcycle or any small

object remains at the side of the vehicle for

extended periods of time (more than a couple of

seconds).



Crowded areas such as parking lots, neighbor

-

hoods, etc. may lead to an increased amount of

false alerts. This is normal operation.

1 — Trailer Length
2 — Trailer Hitch
3 — Trailer Width

6

296

SAFETY

F

ORWARD

C

OLLISION

W

ARNING

(FCW)

W

ITH

M

ITIGATION

— I

F

E

QUIPPED

FCW with Mitigation provides the driver with

audible warnings, visual warnings (within the

instrument cluster display), and may apply a haptic

warning in the form of a brake jerk, to warn the

driver when it detects a potential frontal collision.

The warnings are intended to provide the driver

with enough time to react, avoid or mitigate the

potential collision.

NOTE:

FCW monitors the information from the forward

looking sensors as well as the Electronic Brake

Controller (EBC), to calculate the probability of a

forward collision. When the system determines

that a forward collision is probable, the driver will

be provided with audible and visual warnings as

well as a possible haptic warning in the form of a

brake jerk.
If the driver does not take action based upon these

progressive warnings, then the system will provide

a limited level of active braking to help slow the

vehicle and mitigate the potential forward collision.

If the driver reacts to the warnings by braking and

the system determines that the driver intends to

avoid the collision by braking but has not applied

sufficient brake force, the system will compensate

and provide additional brake force as required.

When towing a trailer, the system will also respond

to activate the trailer brakes (if equipped).
If an FCW with Mitigation event begins at a speed

below 32 mph (52 km/h), the system may provide

the maximum braking possible to mitigate the

potential forward collision. If the Forward Collision

Warning with Mitigation event stops the vehicle

completely, the system will hold the vehicle at

standstill for two seconds and then release the

brakes.

FCW Message

When the system determines a collision with the

vehicle in front of you is no longer probable, the

warning message will be deactivated

Ú

page 447.

NOTE:



The minimum speed for FCW activation is

3 mph (5 km/h).



The FCW alerts may be triggered on objects

other than vehicles such as guardrails or sign

posts based on the course prediction. This is

expected and is a part of normal FCW activation

and functionality.



It is unsafe to test the FCW system. To prevent

such misuse of the system, after four Active

Braking events within a key cycle, the Active

Braking portion of FCW will be deactivated until

the next key cycle.

WARNING!

The Blind Spot Monitoring system is only an aid

to help detect objects in the blind spot zones.

The BSM system is not designed to detect

pedestrians, bicyclists, or animals. Even if your

vehicle is equipped with the BSM system, always

check your vehicle’s mirrors, glance over your

shoulder, and use your turn signal before

changing lanes. Failure to do so can result in

serious injury or death.

SAFETY

297



The FCW system is intended for on-road use

only. If the vehicle is taken off-road, the FCW

system should be deactivated to prevent unnec

-

essary warnings to the surroundings.



FCW may not react to irrelevant objects such as

overhead objects, ground reflections, objects

not in the path of the vehicle, stationary objects

that are far away, oncoming traffic, or leading

vehicles with the same or higher rate of speed.



FCW will be disabled like ACC, with the unavail

-

able screens.



During an FCW event when towing a trailer, your

Electronic Brake system will respond by acti

-

vating the trailer brakes (if equipped).

Turning FCW On Or Off

The FCW button is located in the Uconnect display

in the control settings. For further information, see

Ú

page 232.



To turn the FCW system on, press the Forward

Collision button once.



To turn the FCW system off, press the Forward

Collision button once.

NOTE:



When the FCW is “on”, this allows the system to

warn the driver of a possible collision with the

vehicle in front.



When the FCW is “off”, this prevents the system

from warning the driver of a possible collision

with the vehicle in front. If the FCW is set to “off”,

“FCW OFF" will be displayed in the instrument

cluster display.



When FCW status is set to “Only Warning”, this

prevents the system from providing limited

Active Braking, or additional brake support if the

driver is not braking adequately in the event of

a potential frontal collision.



When FCW status is set to “Warning and

Braking”, this allows the system to warn the

driver of a possible collision with the vehicle in

front using audible/visual warnings and it

applies autonomous braking.



The FCW system state is defaulted to “Full On”

from one ignition cycle to the next. If the system

is turned off, it will reset to “Full On” when the

vehicle is restarted.

FCW Braking Status And Sensitivity

The FCW sensitivity and Active Braking status are

programmable through the Uconnect system. For

further information, see

Ú

page 232.



Far



When the sensitivity of FCW is set to the

“Far” setting and the system status is

“Warning and Braking”, this allows the

system to warn the driver of a possible more

distant collision with the vehicle in front

using audible/visual warnings.



More cautious drivers that do not mind

frequent warnings may prefer this setting.



Medium



When the sensitivity of FCW is set to the

“Medium” setting and the system status is

“Warning and Braking”, this allows the

system to warn the driver of a possible colli

-

sion with the vehicle in front using audible/

visual warnings.



Near



When the sensitivity of FCW is set to the

“Near” setting and the system status is

“Warning and Braking”, this allows the

WARNING!

Forward Collision Warning (FCW) is not intended

to avoid a collision on its own, nor can FCW

detect every type of potential collision. The driver

has the responsibility to avoid a collision by

controlling the vehicle via braking and steering.

Failure to follow this warning could lead to

serious injury or death.

6

298

SAFETY

system to warn the driver of a possible

closer collision with the vehicle in front

using audible/visual warnings.



This setting provides less reaction time than

the “Far” and “Medium” settings, which

allows for a more dynamic driving experi

-

ence.



More dynamic or aggressive drivers that

want to avoid frequent warnings may prefer

this setting.

FCW Limited Warning

If the instrument cluster displays “ACC/FCW

Limited Functionality” or “ACC/FCW Limited

Functionality Clean Front Windshield”

momentarily, there may be a condition that limits

FCW functionality. Although the vehicle is still

drivable under normal conditions, Active Braking

may not be fully available. Once the condition that

limited the system performance is no longer

present, the system will return to its full

performance state. If the problem persists, see an

authorized dealer.

Service FCW Warning

If the system turns off, and the instrument cluster

displays:



ACC/FCW Unavailable Service Required



Cruise/FCW Unavailable Service Required

This indicates there is an internal system fault.

Although the vehicle is still drivable under normal

conditions, have the system checked by an

authorized dealer.

T

IRE

P

RESSURE

M

ONITORING

S

YSTEM

(TPMS)

The Tire Pressure Monitoring System (TPMS) will

warn the driver of a low tire pressure based on the

vehicle recommended cold placard pressure.

NOTE:

The TPMS Warning Light will illuminate in the

instrument cluster and a chime will sound when

tire pressure is low in one or more of the four active

road tires. In addition, the instrument cluster will

display a graphic showing the pressure values of

each tire with the low tire pressure values in a

different color, or the Uconnect radio will display a

TPMS message. When this occurs you must

increase the tire pressure to the recommended

cold placard pressure in order for the TPMS

Warning Light to turn off.
The tire pressure will vary with temperature by

about 1 psi (7 kPa) for every 12°F (6.5°C). This

means that when the outside temperature

decreases, the tire pressure will decrease. Tire

pressure should always be set based on cold

inflation tire pressure. This is defined as the tire

pressure after the vehicle has not been driven

for at least three hours, or driven less than

1 mile (1.6 km) after a three hour period. The cold

tire inflation pressure must not exceed the

maximum inflation pressure molded into the tire

sidewall. The tire pressure will also increase as the

vehicle is driven — this is normal and there should

be no adjustment for this increased pressure.
See

Ú

page 410 on how to properly inflate the

vehicle’s tires.
The TPMS will warn the driver of a low tire pressure

if the tire pressure falls below the low-pressure

warning limit for any reason, including low

temperature effects and natural pressure loss

through the tire.
The TPMS will continue to warn the driver of low

tire pressure as long as the condition exists, and

will not turn off until the tire pressure is at or above

the recommended cold placard pressure. Once the

low TPMS Warning Light illuminates, you must

increase the tire pressure to the recommended

cold placard pressure in order for the TPMS

Warning Light to turn off. The system will

automatically update and the TPMS Warning Light

will turn off once the system receives the updated

tire pressures. The vehicle may need to be driven

for up to 20 minutes above 15 mph (24 km/h) in

order for the TPMS to receive this information.

SAFETY

299

NOTE:

When filling warm tires, the tire pressure may need

to be increased up to an additional 4 psi (28 kPa)

above the recommended cold placard pressure in

order to turn the TPMS Warning Light off.
For example, your vehicle may have a

recommended cold (parked for more than three

hours) placard pressure of 30 psi (207 kPa). If the

ambient temperature is 68°F (20°C) and the

measured tire pressure is 27 psi (186 kPa), a

temperature drop to 20°F (-7°C) will decrease the

tire pressure to approximately 23 psi (158 kPa).

This tire pressure is sufficiently low enough to turn

on the TPMS Warning Light. Driving the vehicle

may cause the tire pressure to rise to

approximately 27 psi (186 kPa), but the TPMS

Warning Light will still be on. In this situation, the

TPMS Warning Light will turn off only after the tires

are inflated to the vehicle’s recommended cold

placard pressure value.

NOTE:



The TPMS is not intended to replace normal tire

care and maintenance or to provide warning of

a tire failure or condition.



If your vehicle is not equipped with the Tire Fill

Alert feature the TPMS should not be used as a

tire pressure gauge while adjusting your tire

pressure.



Driving on a significantly underinflated tire

causes the tire to overheat and can lead to tire

failure. Underinflation also reduces fuel effi

-

ciency and tire tread life, and may affect the

vehicle’s handling and stopping ability.



The TPMS is not a substitute for proper tire

maintenance, and it is the driver’s responsibility

to maintain correct tire pressure using an accu

-

rate tire pressure gauge, even if underinflation

has not reached the level to trigger illumination

of the TPMS Warning Light.



Seasonal temperature changes will affect tire

pressure, and the TPMS will monitor the actual

tire pressure in the tire.

CAUTION!



The TPMS has been optimized for the original

equipment tires and wheels. TPMS pressures

and warning have been established for the tire

size equipped on your vehicle. Undesirable

system operation or sensor damage may

result when using replacement equipment

that is not of the same size, type, and/or style.

Aftermarket wheels can cause sensor

damage.



Using aftermarket tire sealants may cause the

Tire Pressure Monitoring System (TPMS)

sensor to become inoperable. After using an

aftermarket tire sealant it is recommended

that you take your vehicle to an authorized

dealership to have your sensor function

checked.



After inspecting or adjusting the tire pressure

always reinstall the valve stem cap. This will

prevent moisture and dirt from entering the

valve stem, which could damage the TPMS

sensor.

6