Acura RLX HYBRID (2020 year). Manual in english — page 28
450
Driving
Braking
Brake System
Use the parking brake to keep the vehicle stationary when parked. When the
parking brake is applied, you can manually or automatically release it.
■
To apply
The electric parking brake can be applied any
time the vehicle has battery, no matter which
power mode the vehicle is in.
Pull the electric parking brake switch up gently
and securely.
u
The electric parking brake indicator
comes on.
■
Parking Brake
1
When you depress the brake pedal, you may hear a
whirling sound from the engine compartment. This is
because the brake system is in operation, and it is
normal.
1
You may hear the electric parking brake system
motor operating from the rear wheel area when you
apply or release the parking brake. This is normal.
The brake pedal may slightly move due to the electric
parking brake system operation when you apply or
release the parking brake. This is normal.
You cannot apply or release the parking brake if the
battery goes dead.
2
If you pull up and hold the electric parking brake
switch while driving, the brakes on all four
wheels are applied by the VSA
®
system until the
vehicle come to a stop. The electric parking
brake then applies, and the switch should be
released.
Electric Parking
Brake Switch
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Braking
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Brake System
Driving
■
To release
The power mode must be in the ON position
to release the electric parking brake.
1.
Depress the brake pedal.
2.
Press the electric parking brake switch.
u
The electric parking brake indicator goes
off.
Manually releasing the parking brake using
the switch helps your vehicle start slowly and
smoothly when facing downhill on steep hills.
1
In the following situations, the parking brake
automatically operates.
•
When the vehicle stops more than 10 minutes
while ACC with Low Speed Follow is activated.
•
When the driver’s seat belt is unfastened while
your vehicle is stopped automatically by ACC with
Low Speed Follow.
•
When the power system is turned off while ACC
with Low Speed Follow is activated.
•
When the vehicle stops with the automatic brake
hold system activated for more than 10 minutes.
•
When the driver’s seat belt is unfastened while
your vehicle is stopped and brake hold is applied.
•
When the power system is turned off while brake
hold is applied.
•
When there is a problem with the Brake Hold
System.
Electric Parking
Brake Switch
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Braking
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Brake System
452
Driving
■
To release automatically
Depressing the accelerator pedal releases the parking brake.
Use the accelerator pedal to release the brake when you are starting the vehicle
facing uphill, or in a traffic jam.
Gently depress the accelerator pedal.
When on a hill, it may require more
accelerator input to release.
u
The electric parking brake indicator goes
off.
The parking brake automatically releases as you depress the accelerator pedal when:
•
You are wearing the driver’s seat belt.
•
The power system is on.
•
The transmission is not in
(
P
or
(
N
.
1
If the parking brake cannot be released
automatically, release it manually.
When the vehicle is traveling uphill, the accelerator
pedal may need to be pressed farther to
automatically release the electric parking brake.
The parking brake cannot be released automatically
while the following indicators are on:
•
Malfunction indicator lamp
•
Transmission system indicator
The parking brake may not be released automatically
while the following indicators are on:
•
Electric parking brake system indicator
•
VSA
®
system indicator
•
ABS
indicator
•
Supplemental restraint system indicator
Accelerator Pedal
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Braking
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Brake System
Driving
Your vehicle is equipped with disc brakes at all four wheels. The brake assist system
increases the stopping force when you depress the brake pedal hard in an
emergency situation. The anti-lock brake system (ABS) helps you retain steering
control when braking very hard.
2
2
■
Foot Brake
1
Check the brakes after driving through deep water,
or if there is a buildup of road surface water. If
necessary, dry the brakes by lightly depressing the
pedal several times.
If you hear a continuous metallic friction sound when
applying the brakes, this is caused by the brake wear
indicator rubbing on the brake rotor and indicates
that the brake pads need to be replaced. Have the
vehicle checked by a dealer. If you hear only an
occasional squeak or squeal when you initially apply
the brake pedal, this may be normal and caused by
high frequency vibration of the brake pads against
the rotating brake disc.
Constantly using the brake pedal while going down a
long hill builds up heat, which reduces the brake
effectiveness. Apply regenerative braking by taking
your foot off the accelerator pedal and downshifting
to a lower gear.
Do not rest your foot on the brake pedal while
driving, as it will lightly apply the brakes and cause
them to lose effectiveness over time and reduce pad
life. It will also confuse drivers behind you.
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Braking
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Brake System
454
Driving
Keeps the brake applied after releasing the brake pedal until the accelerator pedal is
pressed. You can use this system only while the vehicle is temporarily stopped, like
at traffic lights and in heavy traffic.
■
Automatic Brake Hold
1
3
WARNING
Activating the automatic brake hold system
on steep hills or slippery roads may still
allow the vehicle to move if you remove
your foot from the brake pedal.
If a vehicle unexpectedly moves, it may
cause a crash resulting in serious injury or
death.
Never activate the automatic brake hold
system or rely on it to keep a vehicle from
moving when stopped on a steep hill or
slippery roads.
3
WARNING
Using the automatic brake hold system to
park the vehicle may result in the vehicle
unexpectedly moving.
If a vehicle moves unexpectedly, it may
cause a crash, resulting in serious injury or
death.
Never leave the vehicle when braking is
temporarily kept by automatic brake hold
and always park the vehicle by putting the
transmission in
(
P
and applying the parking
brake.
■
Turning on the system
Fasten your seat belt
properly, then start the
power system. Press the
automatic brake hold
button.
●
The automatic brake
hold system indicator
comes on. The system
is turned on.
■
Activating the system
Depress the brake pedal
to come to a complete
stop. The transmission
must be in
(
D
or
(
N
.
●
The automatic brake
hold indicator comes
on. Braking is kept for
up to 10 minutes.
●
Release the brake
pedal after the
automatic brake hold
indicator comes on.
■
Canceling the system
Depress the accelerator
pedal while the
transmission is in
(
D
.
The system is canceled
and the vehicle starts to
move.
●
The automatic brake
hold indicator goes
off. The system
continues to be on.
Accelerator Pedal
Brake Pedal
Automatic Brake
Hold Button
Goes
Off
U.S.
Canada
On
On
Comes
On
Comes
On
Comes
On
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455
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Braking
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Brake System
Driving
■
The system automatically cancels when:
•
You depress the brake pedal and change to
(
P
or
(
R
.
•
You engage the parking brake.
■
The system automatically cancels and the parking brake is applied when:
•
Braking is kept for more than 10 minutes.
•
The driver’s seat belt is unfastened.
•
The power system is turned off.
•
Brake Hold System Problem
appears on the multi-information display.
■
Turning off the automatic brake hold system
While the system is on, press the automatic
brake hold button again.
u
The automatic brake hold system
indicator goes off.
If you want to turn off automatic brake hold
while the system is in operation, press the
automatic brake hold button with the brake
pedal depressed.
1
While the system is activated, you can turn off the
power system or park the vehicle through the same
procedure as you normally do.
2
Whether the system is on, or the system is activated,
the automatic brake hold turns off once the power
system is off.
1
Turning off the automatic brake hold system
Make sure to turn off the automatic brake hold
system before using an automated car wash.
You may hear an operating noise if the vehicle moves
while the automatic brake hold system is in
operation.
Automatic Brake
Hold Button
Goes
Off
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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. Depress the brake
pedal and 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 the vehicle
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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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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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
P. 462
You can read about handling information for the
camera equipped with this system.
2
P. 400
Be careful not to have the radar sensor cover strongly
impacted.
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.
When the CMBS
TM
activates, it may automatically
apply the brake. It will be canceled when your vehicle
stops or a potential collision is not determined.
The radar sensor is
in the front grille.
The camera is
located behind
the rearview
mirror.
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.
When to use
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.
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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 audio/
information screen setting options.
2
P. 295
■
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
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.
u
Take appropriate action to prevent a collision (apply the brakes, change
lanes, etc.)
Beep
Head-up
Warning
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
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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 radar sensor
detects a vehicle
E-pretensioner/
Reactive Force Pedal
Audible & Visual WARNINGS
Steering
Wheel
Braking
Stage
one
There is a risk of a
collision with the
vehicle ahead of
you.
Increases the
accelerator pedal
resistance force.
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.
Retracts the driver’s
seat belt gently a few
times, providing a
physical warning.
Visual and audible alerts.
—
Lightly
applied
Stage
three
The CMBS
TM
determines that a
collision is
unavoidable.
Forcefully tightens
driver and front
passenger seat belts.
Forcefully
applied
Your Vehicle
Vehicle
Ahead
Normal
Short
Long
Accelerator Pedal
Your
Vehicle
Vehicle
Ahead
Your
Vehicle
Vehicle
Ahead
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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 multi-information display
reminds you that the system is off.
The CMBS
TM
is turned on every time you turn
the power system on, 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
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
462
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
P. 400
■
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).
•
Driving on curvy, winding, or undulating roads.
•
The road is hilly or the vehicle is approaching the crest of a hill.
■
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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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.
■
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.
* Not available on all models
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
Driving
•
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 shorter than about 3.3 feet (1 meter) or taller than about
6.6 feet (2 meters) 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).
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 the CMBS
TM
to shut off improve or are addressed
(e.g., cleaning), the system comes back on.
■
Automatic shutoff
Limitations applicable to pedestrian detection only
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Braking
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Collision Mitigation Braking System
TM
(CMBS
TM
)
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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