Acura TLX (2019 year). Manual - part 28

438

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Braking

u

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

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

439

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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 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

TM

 (CMBS

TM

)

The CMBS

TM

 may automatically shut off, and the 

CMBS

TM

 indicator will come and stay on under certain 

conditions:

2 CMBS

TM

 Conditions and Limitations P. 440

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Braking

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Collision Mitigation Braking System

TM

 (CMBS

TM

)

440

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. 388

■

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

CMBS

TM

 Conditions and Limitations

Do not paint, or apply any coverings or paint to 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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441

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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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442

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Braking

u

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 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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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 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 the 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

)

444

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

TM

 (CMBS

TM

)

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.

Do not put a sticker on the radar sensor cover or 
replace the radar sensor cover.

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445

Continued

Driving

Parking Your Vehicle

When Stopped

1. Depress the brake pedal firmly.
2. With the brake pedal depressed, pull up the electric parking brake switch slowly, 

but fully.

3. Change the gear position to 

(

P.

4. Turn off the engine.

u

The electric parking brake indicator (red) goes off in about 15 seconds.

1

Parking Your Vehicle

Do not park your vehicle near flammable objects, 
such as dry grass, oil, or timber.
Heat from the exhaust can cause a fire.

1

When Stopped

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.

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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Parking Your Vehicle

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When Stopped

446

Driving

Always confirm the electric parking brake is set, particularly if you are parked on an 
incline.

1

When Stopped

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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Parking Sensor System

*

Continued

Driving

Parking Sensor System

*

The corner and center sensors monitor obstacles around your vehicle, and the 
beeper and information screen lets you know the approximate distance between 
your vehicle and the obstacle.

■

The sensor location and range

1

Parking Sensor System

*

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.

•

The vehicle is on uneven surface, such as grass, 
bumps, 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.

Front: Within about 28 in (70 cm) or less
Rear: Within about 35 in (90 cm) or less

Front: Within about 28 in (70 cm) or less
Rear: Within about 28 in (70 cm) or less

Models with A-SPEC emblem

Models without A-SPEC emblem

Front Corner Sensors

Rear Corner Sensors

Rear Center Sensors

Front: Within about 31 in (80 cm) or less
Rear: Within about 43 in (110 cm) or less

Front Center Sensors

* Not available on all models

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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 the 
system on or off. The indicator in the button 
comes on when the system is on.

The rear center and corner sensors and the 
front 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 center and corner sensors start to 
detect an obstacle when the transmission is 
not in 

(

P or 

(

R, and the vehicle speed is less 

than 5 mph (8 km/h).

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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:Models with A-SPEC emblem
*2: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

*1

: About 35-28 in 

(90-70 cm)

Front: About 31-28 in 

(80-70 cm)

Rear: About 43-28 in 

(110-70 cm) 

Blinks in Yellow

*2

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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Parking Your Vehicle

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Parking Sensor System

*

450

Driving

1. Make sure that the parking sensor system is not activated. Set the power mode to 

VEHICLE OFF (LOCK).

2. Press and hold the parking sensor system button, and set the power mode to ON.
3. Keep pressing the button for 10 seconds. Release the button when the indicator 

in the button flashes.

4. Press the button again. The indicator in the button goes off.

u

The beeper sounds twice. The rear sensors are now turned off.

To turn the rear sensors on again, follow the above procedure. The beeper sounds 
three times when the rear sensors come back on.

■

Turning off All Rear Sensors

1

Turning off All Rear Sensors

When you set the gear position to 

(

R, the indicator 

in the parking sensor system button blinks as a 
reminder that the rear sensors have been turned off.

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Parking Your Vehicle

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Cross Traffic Monitor

*

Continued

Driving

Cross Traffic Monitor

*

Monitors the rear corner areas using the radar sensors when reversing, and alerts 
you if a vehicle approaching from a rear corner is detected.

The system is convenient when you are backing out of a parking space.

1

Cross Traffic Monitor

*

3

CAUTION

Cross Traffic Monitor cannot detect all 
approaching vehicles and may not detect 
an approaching vehicle at all.

Failure to visually confirm that it is safe to 
back up the vehicle before doing so may 
result in a collision.

Do not solely rely on the system when 
reversing; always also use your mirrors, and 
look behind and to the sides of your vehicle 
before reversing.

* Not available on all models

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Parking Your Vehicle

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Cross Traffic Monitor

*

452

Driving

The system activates when:
• The power mode is in ON.
• The Cross Traffic Monitor is turned on.

2 Cross Traffic Monitor On and Off P. 455
2 Customized Features P. 292

• The transmission is in 

(

R.

• Your vehicle is moving at 3 mph (5 km/h) or 

lower.

When a vehicle is detected approaching from a rear corner, Cross Traffic Monitor 
alerts you with a buzzer and a displayed warning.

The system will not detect a vehicle that approaches from directly behind your 
vehicle, nor will it provide alerts about a detected vehicle when it moves directly 
behind your vehicle.

The system does not provide alerts for a vehicle that is moving away from your 
vehicle, and it may alert for pedestrians, bicycles, or stationary objects.

■

How the System Works

1

Cross Traffic Monitor

*

Cross Traffic Monitor may not detect or may delay 
alerting an approaching vehicle, or may alert without 
an approaching vehicle under the following 
conditions:

•

An obstacle, such as another vehicle and a wall, 
near your vehicle’s rear bumper, is blocking the 
radar sensor’s scope.

•

Your vehicle is moving at the speed of about 3 mph 
(5 km/h) or higher.

•

A vehicle is approaching at the speed other than 
between about 6 mph (10 km/h) and 16 mph (25 
km/h).

•

The system picks up external interference such as 
other radar sensors from another vehicle or strong 
radio wave transmitted from a facility nearby.

•

Either corner of the rear bumper is covered with 
snow, ice, mud or dirt.

•

When there is bad weather.

•

Your vehicle is on an incline.

•

Your vehicle is tilted due to a heavy load in the rear.

•

Your vehicle is reversing towards a wall, a pole, a 
vehicle, and so on.

•

The rear bumper or the sensors have been 
improperly repaired or the rear bumper has been 
deformed. Have your vehicle checked by a dealer.

Radar sensors:
Underneath the rear bumper 
corners

* Not available on all models

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Parking Your Vehicle

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Cross Traffic Monitor

*

Driving

1

Cross Traffic Monitor

*

For proper operation, always keep the rear bumper 
corner area clean.
Do not cover the rear bumper corner area with labels 
or stickers of any kind.

The parking sensor system’s alerting buzzer overrides 
the Cross Traffic Monitor buzzer when the sensors 
are detecting obstacles at the closest range.

Models with parking sensor system

* Not available on all models

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