Acura TLX 2017 Owner's Manual
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410
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Driving
The system has three alert stages for a possible collision. However, depending on  circumstances, the CMBSTM may not go through all of 
the stages before initiating the last stage.
■Collision Alert Stages
Distance between vehicles
CMBSTM
The radar sensor  detects a vehicleE-pretensionerAudible & Visual WARNINGSBraking
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 .
—
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 CMBSTM 
determines that a 
collision is 
unavoidable.Forcefully tightens 
driver and front 
passenger seat belts.
Forcefully 
applied
Your Vehicle Vehicle 
Ahead
Normal
Short
Long
Your 
Vehicle Vehicle 
Ahead
Your 
VehicleVehicle 
Ahead
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Continued411
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Driving
Press this button until  the beeper sounds to 
switch the system on or off.
When the CMBS
TM is off:
• The CMBSTM 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 in the previously selected ON or 
OFF setting each time you start the engine.
■CMBSTM On and Off1 Collision Mitigation Braking SystemTM (CMBSTM)*
The CMBSTM may automatically shut off, and the 
CMBSTM indicator will come  and stay on under certain 
conditions:
2 CMBS
TM Conditions and Limitations  P. 412
* Not available on all models
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412
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Driving
The system may automatically shut off and the CMBSTM indicator will come on under 
certain conditions. Some examples of th ese conditions are listed below. Other 
conditions may reduce some of the CMBS
TM functions.
2 Front Sensor Camera* P. 351
■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 misint erpreted as vehicles and pedestrians.
• Reflections on the interior  of the front windshield.
■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.
■CMBSTM Conditions and Limitations
* Not available on all models
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413
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Continued
Driving
■Vehicle conditions
• Headlight lenses are dirty or the h eadlights 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 (wro ng 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 hot.
• 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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uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
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 cu rved, 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 vehicl e 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 a pedestrian blends in with the background.
• When a pedestrian is bent over or squatting, or when their hands or raised or they 
are running.
• When several pedestrians are walking ahead in a group.
• When the lead vehicle suddenly slows down.
• When the camera cannot correctly identify  that a pedestrian is present due to an 
unusual shape (holding luggage, body position, size).
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uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
Continued
Driving
■Automatic shutoff
The CMBSTM may automatically shut  itself off and the CMBSTM 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 windscreen, gets dirty.
Once the conditions th at caused the CMBS
TM to shut off improve or are addressed 
(e.g., cleaning), the system comes back on.
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uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)*
416
Driving
The CMBSTM may activate even when you are aw are 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 ah ead 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, tr ain tracks, roadside objects, etc.
You drive over speed bumps, steel road plates, etc., or yo ur vehicle approaches train 
tracks or roadside objects [such as a traffi c sign and guard rail] on a curve or, when 
parking, stationary vehicles and walls.
■With Little Chance of a Collision1 Collision Mitigation Braking SystemTM (CMBSTM)*
For the CMBSTM 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 emblem or replace the 
emblem.
If you need the radar sensor to be repaired, or 
removed, or the radar se nsor cover is strongly 
impacted, turn off the system by pressing the 
CMBS
TM off button and take your  vehicle to a dealer.
* Not available on all models
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417Continued
Driving
Parking Your Vehicle
When Stopped
1.Depress the brake pedal firmly.
2. With the brake pedal depressed, pull up the electric pa rking brake switch slowly, 
but fully.
3. Change the gear position to 
(P.
4. Turn off the engine.
u The electric parking brake indicato r goes off in about 15 seconds.
1Parking 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 dama ge the transmission:
•Depressing the accelerator and brake pedals 
simultaneously.
•Changing into ( P before the vehicle stops 
completely.
In extremely cold temper atures, 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 unexpect edly, leading to a crash.
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uuParking Your Vehicle uWhen Stopped
418
Driving
Always confirm the electric park ing brake is set, particularly if you are parked on an 
incline.1 When Stopped
When facing uphill, do not hold the vehicle by 
depressing the accelerator pedal.
Doing so may cause the items  to malfunction or a fire 
inside the vehicle.
3WARNING
The vehicle can roll aw ay if left unattended 
without confirming that Park is engaged.
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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uuParking Your Vehicle uParking Sensor System*
Continued
Driving
Parking Sensor System*
The corner and center sensors monitor obst acles around your vehicle. The beeper 
and audio/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 ve hicle before parking.
The system may not  work properly when:
•The sensors are covered with snow, ice, mud or 
dirt.
•The vehicle is on uneven su rface, 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.Within about 24 in (60 cm) or less
Front Corner Sensors
Rear Corner Sensors
Rear Center Sensors
Within about 43 in (110 cm) or less
* Not available on all models
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