Acura MDX (2018 year). Manual — part 34
534
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Braking
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Anti-lock Brake System (ABS)
Driving
Anti-lock Brake System (ABS)
Helps prevent the wheels from locking up, and helps you retain steering control by
pumping the brakes rapidly, much faster than you.
The electronic brake distribution (EBD) system, which is part of the ABS, also
balances the front-to-rear braking distribution according to vehicle loading.
You should never pump the brake pedal. Let the ABS work for you by always
keeping firm, steady pressure on the brake pedal. This is sometimes referred to as
“stomp and steer.”
■
ABS operation
The brake pedal may pulsate slightly when the ABS is working. Keep holding the
pedal firmly down. On dry pavement, you will need to press on the brake pedal very
hard before the ABS activates. However, you may feel the ABS activate immediately
if you are trying to stop on snow or ice.
ABS may activate when you depress the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surfaces, such as potholes, cracks, manholes, etc.
When the vehicle speed goes under 6 mph (10 km/h), the ABS stops.
■
ABS
1
NOTICE
The ABS may not function correctly if you use a tire of
the wrong size or type.
If the ABS indicator comes on while driving, there
may be a problem with the system.
While normal braking will not be affected, there is a
possibility that the ABS will not operating. Have your
vehicle checked by a dealer immediately.
The ABS is not designed for the purpose of reducing
the time or distance it takes for a vehicle to stop: It is
designed to limit brake lockup which can lead to
skidding and loss of steering control.
In the following cases, your vehicle may need more
distance to stop than a vehicle without the ABS:
•
You are driving on rough or uneven road surfaces,
such as gravel or snow.
•
The tires are equipped with snow chains.
The following may be observed with the ABS system:
•
Motor sounds coming from the engine
compartment when the brakes are applied, or
when system checks are being performed after the
engine has been started and while vehicle is
accelerates.
•
Brake pedal and/or the vehicle body vibration when
ABS activates.
These vibrations and sounds are normal to ABS
systems and are no cause for concern.
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535
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Braking
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Brake Assist System
Driving
Brake Assist System
Designed to assist the driver by generating greater braking force when you depress
the brake pedal hard during emergency braking.
■
Brake assist system operation
Press the brake pedal firmly for more powerful braking.
When brake assist operates, the pedal may wiggle slightly and an operating noise
may be heard. This is normal. Keep holding the brake pedal firmly down.
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536
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
Collision Mitigation Braking System
TM
(CMBS
TM
)
Can assist you when there is a possibility of your vehicle colliding with a vehicle or a
pedestrian detected in front of yours. The CMBS
TM
is designed to alert you when a
potential collision is determined, as well as to reduce your vehicle speed to help
minimize collision severity when a collision is deemed unavoidable.
■
How the system works
1
Collision Mitigation Braking System
Important Safety Reminder
The CMBS
TM
is designed to reduce the severity of an
unavoidable collision. It does not prevent a collision
nor stop the vehicle automatically. It is still your
responsibility to operate the brake pedal and steering
wheel appropriately according to the driving
conditions.
The CMBS
TM
may not activate or may not detect a
vehicle in front of your vehicle under certain
conditions:
2 CMBS
Conditions and Limitations P. 540
You can read about handling information for the
camera equipped with this system.
2 Front Sensor Camera P. 487
Be careful not to severely impact the radar sensor
cover.
1
Rapid vibrations on the steering wheel alert you
when your vehicle speed is between 19 and 62 mph
(30 and 100 km/h) with an oncoming vehicle
detected in front of you.
The system starts monitoring the roadway ahead when your vehicle speed is about
3 mph (5 km/h) and there is a vehicle in front of you.
The radar sensor is
in the front grille.
The CMBS
TM
activates when:
●
The speed difference between your vehicle and a vehicle or pedestrian
detected in front of you becomes about 3 mph (5 km/h) and over with a chance
of a collision.
●
Your vehicle speed is about 62 mph (100 km/h) or less and there is a chance of a
collision with an oncoming detected vehicle or a pedestrian in front of you.
The camera is
located behind the
rearview mirror.
When to use
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Continued
537
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
■
When the system activates
At system’s earliest collision alert stage, you can change the distance (Long/
Normal/Short) between vehicles at which alerts will come on through MID setting
options.
2 List of customizable options P. 129
■
Vibration alert on the steering wheel
When a potential collision to an oncoming detected vehicle is determined, the
system alerts you with rapid vibration on the steering wheel, in addition to visual and
audible alerts.
u
Take appropriate action to prevent a collision (apply the brakes, operate the
steering wheel, etc.).
1
The camera in the CMBS
TM
is also designed to detect
pedestrians.
However, this pedestrian detection feature may not
activate or may not detect a pedestrian in front of
your vehicle under certain conditions.
Refer to the ones indicating the pedestrian detection
limitations from the list.
2 CMBS
Conditions and Limitations P. 540
The head-up warning
*
uses a lens located at the front
end of the dashboard.
Do not cover the lens or spill any liquid on it.
Lens
The system provides visual, audible and tactile alerts of a possible collision,
and stops if the collision is avoided.
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Take appropriate action to prevent a collision (apply the brakes, change
lanes, etc.)
Beep
Head-up
Warning
Lights
*
Visual Alerts
Audible Alert
Tactile Alert
1
Vibration alert on the steering wheel
Vibration alert function is disabled when the electric
power steering (EPS) system indicator comes on.
2 Speed-sensitive Electric Power Steering
* Not available on all models
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538
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
The system has three alert stages for a possible collision. However, depending on circumstances, the CMBS
TM
may not go through all of
the stages before initiating the last stage.
■
Collision Alert Stages
Distance between vehicles
CMBS
TM
The sensors detect a
vehicle
Audible & Visual WARNINGS
Steering Wheel
Braking
Stage one
There is a risk of a
collision with the
vehicle ahead of you.
When in Long, visual and audible
alerts come on at a longer
distance from a vehicle ahead
than in Normal setting, and in
Short, at a shorter distance than
in Normal.
In case of an
oncoming vehicle
detected, rapid
vibration is
provided.
—
Stage two
The risk of a collision
has increased, time to
respond is reduced.
Visual and audible alerts.
—
Lightly
applied
Stage three
The CMBS
TM
determines that a
collision is
unavoidable.
Forcefully
applied
Your Vehicle
Vehicle
Ahead
Normal
Short
Long
Your
Vehicle
Vehicle
Ahead
Your
Vehicle
Vehicle
Ahead
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Continued
539
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
Press and hold the button until the beeper
sounds to switch the system on or off.
When the CMBS
TM
is off:
• The CMBS
TM
indicator in the instrument
panel comes on.
• A message on the MID reminds you that the
system is off.
The CMBS
TM
is turned on every time you start
the engine, even if you turned it off the last
time you drove the vehicle.
■
CMBS
TM
On and Off
1
Collision Mitigation Braking System
The CMBS
TM
may automatically shut off, and the
CMBS
TM
indicator will come and stay on under certain
conditions:
2 CMBS
Conditions and Limitations P. 540
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
540
Driving
The system may automatically shut off and the CMBS
TM
indicator will come on under
certain conditions. Some examples of these conditions are listed below. Other
conditions may reduce some of the CMBS
TM
functions.
2 Front Sensor Camera P. 487
■
Environmental conditions
• Driving in bad weather (rain, fog, snow, etc.).
• Sudden changes between light and dark, such as an entrance or exit of a tunnel.
• There is little contrast between objects and the background.
• Driving into low sunlight (e.g., at dawn or dusk).
• Strong light is reflected onto the roadway.
• Driving in the shadows of trees, buildings, etc.
• Roadway objects or structures are misinterpreted as vehicles and pedestrians.
• Reflections on the interior of the windshield.
• Driving at night or in a dark condition such as a tunnel.
■
Roadway conditions
• Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks,
reflected lights, road spray, high contrast).
• The road is hilly or the vehicle is approaching the crest of a hill.
• Driving on curvy, winding, or undulating roads.
■
CMBS
TM
Conditions and Limitations
1
Do not paint, or apply any coverings or paint to the
radar sensor area. This can impact CMBS
TM
operation.
Have your vehicle checked by a dealer if you find any
unusual behavior of the system (e.g., the warning
message appears too frequently).
If the front of the vehicle is impacted in any of the
following situations, the radar sensor may not work
properly. Have your vehicle checked by a dealer:
•
The vehicle mounted onto a bump, curb, chock,
embankment, etc.
•
You drive the vehicle where the water is deep.
•
Your vehicle has a frontal collision.
If you need the radar sensor to be repaired, or
removed, or the radar sensor cover is strongly
impacted, turn off the system by pressing the
CMBS
TM
off button and take your vehicle to a dealer.
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541
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Continued
Driving
■
Vehicle conditions
• Headlight lenses are dirty or the headlights are not properly adjusted.
• The outside of the windshield is blocked by dirt, mud, leaves, wet snow, etc.
• The inside of the windshield is fogged.
• An abnormal tire or wheel condition (wrong sized, varied size or construction,
improperly inflated, compact spare tire
*
, etc.).
• When tire chains are installed.
• The vehicle is tilted due to a heavy load or suspension modifications.
• The camera temperature gets too high.
• Driving with the parking brake applied.
• When the radar sensor in the front grille gets dirty.
* Not available on all models
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542
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
■
Detection limitations
• A vehicle or pedestrian suddenly crosses in front of you.
• The distance between your vehicle and the vehicle or pedestrian ahead of you is
too short.
• A vehicle cuts in front of you at a slow speed, and it brakes suddenly.
• When you accelerate rapidly and approach the vehicle or pedestrian ahead of you
at high speed.
• The vehicle ahead of you is a motorcycle, bicycle, mobility scooter or other small
vehicle.
• When there are animals in front of your vehicle.
• When you drive on a curved, winding or undulating road that makes it difficult for
the sensor to properly detect a vehicle in front of you.
• The speed difference between your vehicle and a vehicle or pedestrian in front of
you is significantly large.
• An oncoming vehicle suddenly comes in front of you.
• Another vehicle suddenly comes in front of you at an intersection, etc.
• Your vehicle abruptly crosses over in front of an oncoming vehicle.
• When driving through a narrow iron bridge.
• When the lead vehicle suddenly slows down.
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543
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Continued
Driving
Limitations applicable to pedestrian detection only
• When there is a group of people in front of your vehicle walking together side by
side.
• Surrounding conditions or belongings of the pedestrian alter the pedestrian’s
shape, preventing the system from recognizing that the person is a pedestrian.
• When the pedestrian is slouching or squatting.
• When the pedestrian is shorter than about 3 feet (1 meter) or taller than about 7
feet (2 meter) in height.
• When a pedestrian blends in with the background.
• When a pedestrian is bent over or squatting, or when their hands are raised or
they are running.
• When several pedestrians are walking ahead in a group.
• When the camera cannot correctly identify that a pedestrian is present due to an
unusual shape (holding luggage, body position, size).
■
Automatic shutoff
The CMBS
TM
may automatically shut itself off and the CMBS
TM
indicator comes and
stays on when:
• The temperature inside the system is high.
• You drive off-road or on a mountain road, or curved and winding road for an
extended period.
• An abnormal tire condition is detected (wrong tire size, flat tire, etc.).
• The camera behind the rearview mirror, or the area around the camera, including
the windshield, gets dirty.
Once the conditions that caused CMBS
TM
to shut off improve or are addressed (e.g.,
cleaning), the system comes back on.
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
544
Driving
The CMBS
TM
may activate even when you are aware of a vehicle ahead of you, or
when there is no vehicle ahead. Some examples of this are:
■
When Passing
Your vehicle approaches another vehicle ahead of you and you change lanes to pass.
■
At an intersection
Your vehicle approaches or passes another vehicle that is making a left or right turn.
■
On a curve
When driving through curves, your vehicle comes to a point where an oncoming
vehicle is right in front of you.
■
Through a low bridge at high speed
You drive under a low or narrow bridge at high speed.
■
Speed bumps, road work sites, train tracks, roadside objects, etc.
You drive over speed bumps, steel road plates, etc., or your vehicle approaches train
tracks or roadside objects [such as a traffic sign and guard rail] on a curve or, when
parking, stationary vehicles and walls.
■
With Little Chance of a Collision
1
Collision Mitigation Braking System
For the CMBS
TM
to work properly:
Always keep the radar sensor cover clean.
Never use chemical solvents or polishing powder for
cleaning the sensor cover. Clean it with water or a
mild detergent.
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545
Continued
Driving
Parking Your Vehicle
When Stopped
1. Depress the brake pedal firmly.
2. With the brake pedal depressed, press the electric parking brake switch slowly,
but fully.
3. Change the gear position to
(
P.
4. Turn off the engine.
The electric parking brake indicator goes off in about 15 seconds.
1
Do not park your vehicle near flammable objects,
such as dry grass, oil, or timber.
Heat from the exhaust can cause a fire.
1
NOTICE
The following can damage the transmission:
•
Depressing the accelerator and brake pedals
simultaneously.
•
Holding the vehicle in place when facing uphill by
depressing the accelerator pedal.
•
Changing into
(
P before the vehicle stops
completely.
In extremely cold temperatures, the parking brake
may freeze up if applied. If such temperatures are
expected, do not apply the parking brake but, if
parking on a slope, either turn the front wheels so
they will contact the curb if the vehicle rolls down the
slope or block the wheels to keep the vehicle from
moving. If you do not take either precaution, the
vehicle may roll unexpectedly, leading to a crash.
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Parking Your Vehicle
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When Stopped
546
Driving
Always confirm the electric parking brake is set, particularly if you are parked on an
incline.
1
3
WARNING
The vehicle can roll away if left unattended
without confirming that Park is engaged.
A vehicle that rolls away could cause a crash
resulting in serious injury or death.
Always keep your foot on the brake pedal
until you have confirmed that
(
P
is shown
on the gear position Indicator.
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547
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Parking Your Vehicle
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Parking Sensor System
*
Continued
Driving
Parking Sensor System
*
The corner and center sensors monitor obstacles near your vehicle. The beeper and
information screen let you know the approximate distance between your vehicle
and the obstacle.
■
The sensor location and range
1
Even when the system is on, always confirm if there is
no obstacle near your vehicle before parking.
The system may not work properly when:
•
The sensors are covered with snow, ice, mud or
dirt, etc.
•
The vehicle is on uneven surface, such as grass,
bumpy road, or a hill.
•
The vehicle has been out in hot or cold weather.
•
The system is affected by devices that emit
ultrasonic waves.
•
Driving in bad weather.
The system may not sense:
•
Thin or low objects.
•
Sonic-absorptive materials, such as snow, cotton,
or sponge.
•
Objects directly under the bumper.
Do not put any accessories on or around the sensors.
Within about 28 in (70 cm) or less
Front Corner Sensors
Rear Corner Sensors
Rear Center Sensors
Front: Within about 39 in (100 cm) or less
Rear: Within about 45 in (115 cm) or less
Front Center Sensors
* Not available on all models
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548
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Parking Your Vehicle
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Parking Sensor System
*
Driving
■
Parking sensor system on and off
With the power mode in ON, press the
parking sensor system button to turn on or off
the system. The indicator in the button comes
on when the system is on.
The rear center and corner sensors start to
detect an obstacle when the transmission is in
(
R, and the vehicle speed is less than 5 mph
(8 km/h).
The front corner sensors start to detect an
obstacle when the transmission is not in
(
P,
and the vehicle speed is less than 5 mph (8
km/h).
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549
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Parking Your Vehicle
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Parking Sensor System
*
Continued
Driving
■
When the distance between your vehicle and obstacles behind becomes shorter
*1: At this stage, only the center sensors detect obstacles.
Length of the
intermittent beep
Distance between the Bumper and Obstacle
Indicator
Information Screen
Corner Sensors
Center Sensors
Moderate
—
Rear: About 45-28 in
(115-70 cm)
Front: About 39-28 in
(100-70 cm)
Blinks in Yellow
*1
Short
About 28-18 in
(70-45 cm)
About 28-18 in
(70-45 cm)
Blinks in Amber
Very short
About 18-14 in
(45-35 cm)
About 18-14 in
(45-35 cm)
Continuous
About 14 in
(35 cm) or less
About 14 in
(35 cm) or less
Blinks in Red
Models with multi-view rear camera
system
Indicators light where the
sensor detects an obstacle.
Models with surround view camera
system
Indicators light where the
sensor detects an obstacle.
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