RAM 3500 Chassis Cab (2019 year). Instruction — part 19

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The ACC screen may display once again if any ACC activity

occurs, which may include any of the following:
• System Cancel
• Driver Override
• System Off
• ACC Proximity Warning
• ACC Unavailable Warning

The instrument cluster display will return to the last

display selected after five seconds of no ACC display

activity

Display Warnings And Maintenance

“Wipe Front Radar Sensor In Front Of Vehicle” Warning

The “ACC/FCW Unavailable Wipe Front Radar Sensor”

warning will display and also a chime will indicate when

conditions temporarily limit system performance.
This most often occurs at times of poor visibility, such as in

snow or heavy rain. The ACC system may also become

temporarily blinded due to obstructions, such as mud, dirt or

ice. In these cases, the instrument cluster display will display

“ACC/FCW Unavailable Wipe Front Radar Sensor” and the

system will deactivate.

The “ACC/FCW Unavailable Wipe Front Radar Sensor”

message can sometimes be displayed while driving in highly

reflective areas (i.e. tunnels with reflective tiles, or ice and

snow). The ACC system will recover after the vehicle has left

these areas. Under rare conditions, when the radar is not

tracking any vehicles or objects in its path this warning may

temporarily occur.
NOTE:

If the “ACC/FCW Unavailable Wipe Front Radar Sensor”

warning is active Normal (Fixed Speed) Cruise Control is

still available. For additional information refer to “Normal

(Fixed Speed) Cruise Control Mode” in this section.
If weather conditions are not a factor, the driver should

examine the sensor. It may require cleaning or removal of an

obstruction. The sensor is located in the camera in the center

of the windshield, on the forward side of the rearview

mirror.

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To keep the ACC System operating properly, it is important

to note the following maintenance items:
• Always keep the sensor clean. Carefully clear the wind-

shield.

• Do not remove any screws from the sensor. Doing so could

cause an ACC system malfunction or failure and require a

sensor realignment.

• Do not attach or install any accessories near the sensor,

including transparent material or aftermarket grilles. Doing

so could cause an ACC system failure or malfunction.

When the condition that deactivated the system is no longer

present, the system will return to the “Adaptive Cruise

Control Off” state and will resume function by simply reac-

tivating it.
NOTE:
• If the “ACC/FCW Unavailable Wipe Front Radar Sensor”

message occurs frequently (e.g. more than once on every

trip) without any snow, rain, mud, or other obstruction,

have the radar sensor realigned at your authorized dealer.

• Installing a snow plow, front-end protector, an after-

market grille or modifying the grille is not recommended.

Doing so may block the sensor and inhibit ACC/FCW

operation.

“Clean Front Windshield” Warning

The “ACC/FCW Limited Functionality Clean Front Wind-

shield” warning will display and also a chime will indicate

when conditions temporarily limit system performance. This

most often occurs at times of poor visibility, such as in snow

or heavy rain and fog. The ACC system may also become

temporarily blinded due to obstructions, such as mud, dirt,

or ice on windshield, driving directly into the sun and fog on

the inside of glass. In these cases, the instrument cluster

display will show “ACC/FCW Limited Functionality Clean

Front Windshield” and the system will have degraded

performance.
The “ACC/FCW Limited Functionality Clean Front Wind-

shield” message can sometimes be displayed while driving

in adverse weather conditions. The ACC/FCW system will

recover after the vehicle has left these areas. Under rare

conditions, when the camera is not tracking any vehicles or

objects in its path this warning may temporarily occur.
If weather conditions are not a factor, the driver should

examine the windshield and the camera located on the back

side of the inside rear view mirror. They may require

cleaning or removal of an obstruction.

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When the condition that created limited functionality is no

longer present, the system will return to full functionality.
NOTE:

If the “ACC/FCW Limited Functionality Clean Front Wind-

shield” message occurs frequently (e.g. more than once on

every trip) without any snow, rain, mud, or other obstruc-

tion, have the windshield and forward facing camera

inspected at your authorized dealer.
Service ACC/FCW Warning

If the system turns off, and the instrument cluster displays

“ACC/FCW Unavailable Service Required” or “Cruise/

FCW Unavailable Service Required”, there may be an

internal system fault or a temporary malfunction that limits

ACC functionality. Although the vehicle is still drivable

under normal conditions, ACC will be temporarily unavail-

able. If this occurs, try activating ACC again later, following

an ignition cycle. If the problem persists, see your authorized

dealer.

Precautions While Driving With ACC

In certain driving situations, ACC may have detection issues.

In these cases, ACC may brake late or unexpectedly. The

driver needs to stay alert and may need to intervene.
NOTE:
• Aftermarket add-ons such as snow plows, lift kits, and

brush/grille bars can hinder module performance. Ensure

the radar/camera has no obstructions in the field of view.

• Height modifications can limit module performance and

functionality.

• Do not put stickers or easy passes over the camera/radar

field of view.

• Any modifications to the vehicle that may obstruct the

field of view of the radar/camera are not recommended.

Cleaning Instructions

Dust and dirt can accumulate on the cover and block the

camera lens. Clean the camera lens with a soft microfiber

cloth, being careful not to damage or scratch the module.

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Towing A Trailer

ACC while towing a trailer is recommended only with an

Integrated Trailer Brake Controller. Aftermarket trailer

brake controllers will not activate the trailer brakes when

ACC is braking.
Offset Driving

ACC may not detect a vehicle in the same lane that is offset

from your direct line of travel, or a vehicle merging in from

a side lane. There may not be sufficient distance to the

vehicle ahead. The offset vehicle may move in and out of the

line of travel, which can cause your vehicle to brake or accel-

erate unexpectedly.

Offset Driving Condition Example

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Turns And Bends

When driving on a curve with ACC engaged, the system

may decrease the vehicle speed and acceleration for stability

reasons, with no target vehicle detected. Once the vehicle is

out of the curve the system will resume your original set

speed. This is a part of normal ACC system functionality.
NOTE:

On tight turns ACC performance may be limited.

Turn Or Bend Example

Using ACC On Hills

When driving on hills, ACC may not detect a vehicle in your

lane. Depending on the speed, vehicle load, traffic condi-

tions, and the steepness of the hills, ACC performance may

be limited.

ACC Hill Example

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Lane Changing

ACC may not detect a vehicle until it is completely in the

lane in which you are traveling. In the illustration shown,

ACC has not yet detected the vehicle changing lanes and it

may not detect the vehicle until it's too late for the ACC

system to take action. ACC may not detect a vehicle until it

is completely in the lane. There may not be sufficient

distance to the lane-changing vehicle. Always be attentive

and ready to apply the brakes if necessary.

Lane Changing Example

Narrow Vehicles

Some narrow vehicles traveling near the outer edges of the

lane or edging into the lane are not detected until they have

moved fully into the lane. There may not be sufficient

distance to the vehicle ahead.

Narrow Vehicle Example

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Stationary Objects And Vehicles

ACC does not react to stationary objects and stationary vehi-

cles. For example, ACC will not react in situations where the

vehicle you are following exits your lane and the vehicle

ahead is stopped in your lane. Always be attentive and ready

to apply the brakes if necessary.

Stationary Object And Stationary Vehicle Example

General Information

The following regulatory statement applies to all Radio

Frequency (RF) devices equipped in this vehicle:
This device complies with Part 15 of the FCC Rules and with

Industry Canada license-exempt RSS standard(s). Operation

is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,

including interference that may cause undesired opera-

tion.

NOTE:

Changes or modifications not expressly approved by the

party responsible for compliance could void the user’s

authority to operate the equipment.

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Normal (Fixed Speed) Cruise Control Mode

In addition to Adaptive Cruise Control mode, a Normal

(Fixed Speed) Cruise Control mode is available for cruising

at fixed speeds. The Normal (Fixed Speed) Cruise Control

mode is designed to maintain a set cruising speed without

requiring the driver to operate the accelerator. Speed Control

can only be operated if the vehicle speed is above 20 mph

(32 km/h).
To change between the different control modes, push the

Adaptive Cruise Control (ACC) on/off button which turns

the ACC on and the Normal (Fixed Speed) Cruise Control

off. Pushing of the Normal (Fixed Speed) Cruise Control on/

off button will result in turning on (changing to) the Normal

(Fixed Speed) Cruise Control mode.

To Set A Desired Speed

Turn the Normal (Fixed Speed) Cruise Control on.

When the vehicle has reached the desired speed,

push the RES (+) or SET (-) button and release.

Release the accelerator and the vehicle will operate at the

selected speed. Once a speed has been set a message

“CRUISE CONTROL SET TO MPH (km/h)” will appear

indicating what speed was set. This light will turn on when

the system is turned on via the on/off control. It turns green

when the cruise control is set.
To Vary The Speed Setting

To Increase Speed
When the Normal (Fixed Speed) Cruise Control is set, you

can increase speed by pushing the RES (+) button.
The driver's preferred units can be selected through the

instrument panel settings. Refer to ”Instrument Cluster

Display” in “Getting To Know Your Instrument Panel” for

more information. The speed increment shown is dependant

on the speed of U.S. (mph) or Metric (km/h) units:

WARNING!

In the Normal (Fixed Speed) Cruise Control mode, the

system will not react to vehicles ahead. In addition, the

proximity warning does not activate and no alarm will

sound even if you are too close to the vehicle ahead since

neither the presence of the vehicle ahead nor the

vehicle-to-vehicle distance is detected. Be sure to

maintain a safe distance between your vehicle and the

vehicle ahead. Always be aware which mode is selected.

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U.S. Speed (mph)
• Pushing the RES (+) button once will result in a 1 mph

increase in set speed. Each subsequent tap of the button

results in an increase of 1 mph.

• If the button is continually pushed, the set speed will

continue to increase in 5 mph increments until the button

is released. The increase in set speed is reflected in the

instrument cluster display.

Metric Speed (km/h)
• Pushing the RES (+) button once will result in a 1 km/h

increase in set speed. Each subsequent tap of the button

results in an increase of 1 km/h.

• If the button is continually pushed, the set speed will

continue to increase in 10 km/h increments until the

button is released. The increase in set speed is reflected in

the instrument cluster display.

To Decrease Speed
When the Normal (Fixed Speed) Cruise Control is set, you

can decrease speed by pushing the SET (-) button.

The driver's preferred units can be selected through the

instrument panel settings. Refer to ”Instrument Cluster

Display” in “Getting To Know Your Instrument Panel” for

more information. The speed decrement shown is dependant

on the speed of U.S. (mph) or Metric (km/h) units:
U.S. Speed (mph)
• Pushing the SET (-) button once will result in a 1 mph

decrease in set speed. Each subsequent tap of the button

results in a decrease of 1 mph.

• If the button is continually pushed, the set speed will

continue to decrease in 5 mph decrements until the button

is released. The decrease in set speed is reflected in the

instrument cluster display.

Metric Speed (km/h)
• Pushing the SET (-) button once will result in a 1 km/h

decrease in set speed. Each subsequent tap of the button

results in a decrease of 1 km/h.

• If the button is continually pushed, the set speed will

continue to decrease in 10 km/h decrements until the

button is released. The decrease in set speed is reflected in

the instrument cluster display.

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To Cancel

The following conditions will cancel the Normal (Fixed

Speed) Cruise Control without clearing the memory:
• The brake pedal is applied.
• The CANC button is pushed.
• The Electronic Stability Control/Traction Control System

(ESC/TCS) activates.

• The vehicle parking brake is applied.
• The braking temperature exceeds normal range (over-

heated).

• The gear selector is removed from the DRIVE position.
• The driver switches ESC to full-off mode.
To Resume Speed

To resume a previously set speed, push the RES (+) button

and release. Resume can be used at any speed above 20 mph

(32 km/h).

To Turn Off

The system will turn off and erase the set speed in memory if:
• The Normal (Fixed Speed) Cruise Control on/off button is

pushed.

• The ignition is turned OFF.
• You engage Four-Wheel Drive Low.
• The Adaptive Cruise Control (ACC) on/off button is

pushed.

PARKSENSE REAR PARK ASSIST — IF EQUIPPED

The ParkSense Rear Park Assist system provides visual and

audible indications of the distance between the rear fascia

and a detected obstacle when backing up, e.g. during a

parking maneuver. Refer to “ParkSense System Usage

Precautions” in this section for limitations of this system and

recommendations.
ParkSense will retain the last system state (enabled or

disabled) from the last ignition cycle when the ignition is

changed to the ON/RUN position.

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ParkSense can be active only when the gear selector is in

REVERSE. If ParkSense is enabled at this gear selector posi-

tion, the system will remain active until the vehicle speed is

increased to approximately 7 mph (11 km/h) or above.

When in REVERSE and above the system's operating speed,

a warning will appear within the instrument cluster display

indicating the vehicle speed is too fast. The system will

become active again if the vehicle speed is decreased to

speeds less than approximately 6 mph (9 km/h).

ParkSense Sensors

For the 3500, 4500 and 5500 Chassis Cab vehicles, the rear

ParkSense sensors are shipped loose. Please refer to the Ram

Body Builders Guide for more information.
The four ParkSense sensors are to be located in the rear

fascia/bumper, and monitor the area behind the vehicle that

is within the sensors’ field of view.
The sensors can detect obstacles from approximately

18 inches (45 cm) up to 79 inches (200 cm) from the rear

fascia/bumper in the horizontal direction, depending on the

location, type and orientation of the obstacle.
NOTE:

If equipped as a dually, the ParkSense system has six rear

sensors to assist in detection around the dually flares.

ParkSense Warning Display

The ParkSense Warning screen is located within the instru-

ment cluster display. It provides visual warnings to indicate

the distance between the rear fascia/bumper and the

detected obstacle. Refer to “Instrument Cluster Display” in

“Getting To Know Your Instrument Panel” for further infor-

mation.

ParkSense Display

When the vehicle is in REVERSE, the warning display will

turn on indicating the system status.
The system will indicate a detected obstacle by showing a

single arc in the left and/or right rear regions based on the

object’s distance and location relative to the vehicle.
If an object is detected in the left and/or right rear region, the

display will show a single solid arc in the left and/or right

rear region and the system will produce a tone. As the

vehicle moves closer to the object, the display will show the

single arc moving closer to the vehicle and the tone will

change from a single 1/2 second tone to slow, to fast, to

continuous.

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Single 1/2 Second Tone

Slow Tone

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Slow Tone

Fast Tone

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Fast Tone

Continuous Tone

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The vehicle is close to the obstacle when the warning display shows one flashing arc and sounds a continuous tone. The

following chart shows the warning alert operation when the system is detecting an obstacle:

NOTE:

ParkSense will reduce the volume of the radio, if on, when

the system is sounding an audio tone.

Adjustable Chime Volume Settings
The rear chime volume settings are programmable through

the Uconnect system. Refer to “Uconnect Settings” in “Multi-

media” for further information.
The chime volume settings include low, medium, and high.

The factory default volume is medium.

WARNING ALERTS

Rear Distance

(inches/cm)

Greater than

79 inches

(200 cm)

79-59 inches

(200-150 cm)

59-47 inches

(150-120 cm)

47-39 inches

(120-100 cm)

39-25 inches

(100-65 cm)

25-12 inches

(65-30 cm)

Less than

12 inches

(30 cm)

Audible Alert

Chime

None

Single 1/2

Second Tone

Slow

Slow

Fast

Fast

Continuous

Arcs-Left

None

None

None

None

None

2nd Flashing 1st Flashing

Arcs-Center

None

6th Solid

5th Solid

4th Solid

3rd Flashing 2nd Flashing 1st Flashing

Arcs-Right

None

None

None

None

None

2nd Flashing 1st Flashing

Radio

Volume

Reduced

No

Yes

Yes

Yes

Yes

Yes

Yes

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Enabling And Disabling ParkSense

ParkSense can be enabled and disabled with the ParkSense

switch.

When the gear selector is moved to REVERSE and

the system is disabled, the instrument cluster

display will show the vehicle graphic with “Off”

over the arcs for as long as the vehicle is in REVERSE.
NOTE:

The ParkSense system will automatically disable when the

system detects that a trailer with trailer brakes has been

connected to the Integrated Trailer Brake Module. The

instrument cluster display will show an “Off” message over

the arcs if the ParkSense system is off, or a “Trailer” message

if the system is on, for as long as the vehicle is in REVERSE.
The ParkSense switch LED will be on when ParkSense is

disabled or defective. The ParkSense switch LED will be off

when the system is enabled.
If the ParkSense switch is pushed, and the system is disabled

or requires service, the ParkSense switch LED will blink

momentarily, and then the LED will be on.

Service The ParkSense Rear Park Assist System

During vehicle start up, when the Rear ParkSense System

has detected a faulted condition, the instrument cluster

display will show the "Rear ParkSense Unavailable Service

Required" or the "Rear ParkSense Unavailable Wipe Sensors"

message.
When the gear selector is moved into REVERSE, a vehicle

graphic will show in the instrument cluster display, along

with the display overlay “Rear ParkSense Unavailable Wipe

Sensors.” If the system needs service, the display overlay will

read “Rear ParkSense Unavailable Service Required” Under

this condition, ParkSense will not operate.
If "Rear ParkSense Unavailable Wipe Sensors" appears in the

instrument cluster display make sure the outer surface and

the underside of the rear fascia/bumper is clean and clear of

snow, ice, mud, dirt or other obstruction, and then cycle the

ignition. If the message continues to appear, see an autho-

rized dealer.
If "Rear ParkSense Unavailable Service Required" appears in

the instrument cluster display, see an authorized dealer.

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