2012 Acura MDX brake sensor

The automatic lighting feature is
controlled by a sensor located on top
of the dashboard. Do not cover this
sensor or spill liquids on it.Fog Lights
Turn the fog lights on and off by
turning the switch next to the
headlight switch.
You can use the fog lights only when
the headlights are on low beam.
With the light switch in the AUTO
position, you can also use the fog
lights when the headlights turn on
automatically. They will go off when
the headlights turn off.Daytime Running Lights
With the headlight switch off, the
daytime running lights come on
when you turn the ignition switch to
the ON (II) position and release the
parking brake. They remain on until
you turn the ignition switch off, even
if you set the parking brake.
When the headlights are on, the
daytime running lights are off.
LIGHT SENSOR
Turn Signal and Headlights130

Overview
Adaptive cruise control (ACC) allows
you to maintain a set speed and keep
the vehicle ahead of you and your
vehicle at a safe distance without
having to use the accelerator pedal or
the brake pedal.
When the vehicle ahead of you slows
down or speeds up, ACC senses the
change in distance and compensates
by adjusting your vehicle speed
accordingly. The distance between
vehicles is based on your speed: the
faster you go, the longer the distance
will be; the slower you go, the
shorter it will be.If the vehicle ahead of you slows
down suddenly or another vehicle
cuts in front of your vehicle, ACC
alerts you by sounding a beeper and
displaying a message on the multi-
information display.
The ACC radar sensor in the front
grille can detect and monitor the
distance of a vehicle up to 328 feet
(100 meters) ahead of your vehicle.
For more information on the radar
sensor, see page 464.
Important Safety Precautions
As with any system, there are limits
to ACC. Inappropriate use of ACC
can result in a serious accident. Use
the brake pedal whenever necessary,
and always keep a safe distance
between your vehicle and other
vehicles.Do not use ACC under these
conditions:
●
In poor visibility.
●
In heavy traffic.
●
When you must slow down and
speed up repeatedly.
●
On winding roads.
●
When you enter a toll gate,
interchange, service area, parking
area, etc. In these areas, there is
no vehicle ahead of you, but ACC
would still try to accelerate to your
set speed.
●
In bad weather (rain, fog, snow,
etc.)
●
On a slippery road (for example a
road covered with ice or snow).
CONTINUED
Adaptive Cruise Control (ACC)
349
Features

Canceling the ACCACC is canceled whenever you do
any of these actions:●
Push the CANCEL button on the
steering wheel.
●
Tap the brake pedal.
●
Press the MAIN button. The ACC
indicator in the instrument panel
goes off.When you push the CANCEL button
or tap the brake pedal to cancel ACC,
the set cruising speed stays in
memory. When you turn on ACC
again, the speed is shown on the
multi-information display. To return
to that speed, accelerate to over 25
mph (40 km/h), then press the RES/
ACCEL button.
If you cancel ACC by pressing the
MAIN button, the previously set
cruising speed is erased from
memory.Automatic ACC Cancelation
When ACC is automatically canceled,
the beeper sounds for about 1
second, and the ACC OFF message
appears on the multi-information
display for 3 seconds.
Any of these conditions may cause
ACC to cancel:
●
The vehicle speed decreases
below 22 mph (35 km/h).
●
Poor weather (rain, fog, snow, etc.)
●
When the radar sensor in the front
grille gets dirty.
●
The vehicle ahead of you cannot
be detected.
●
An abnormal tire condition is
detected, or the tires are skidding.
CANCEL BUTTON
Adaptive Cruise Control (ACC)358

Message Description Message Description
ACC has automatically canceled because its
radar sensor in the front
grille is dirty.
You will hear three beeps.Apply the brakes immediately.
Your vehicle is too close to the vehicle
ahead of it.
You will hear a continuous beep.
ACC has automatically canceled
because of bad weather or other conditions.
You will hear three beeps.ACC needs to be checked.
Have your vehicle checked by a dealer.
CONTINUED
Adaptive Cruise Control (ACC)
361
Features

OverviewIf equippedThe collision Mitigation braking
system™(CMBS™) can assist the
driver when there is a possibility of
colliding with the vehicle in front of
yours. It is designed to reduce the
speed of your vehicle before an
unavoidable collision occurs and, if
possible, to alert you to a potential
collision while there is time for the
driver to prevent it. Here is a brief
description of what the CMBS can
do:When your speed is above 10 mph
(15 km/h), the CMBS is monitoring
the vehicle ahead of you with radar.
When your vehicle is approaching
the vehicle ahead of yours too
quickly, the system may activate one
or more of the following: a visual
alert, an audible alert, apply the
brakes and e-pretensioners to tighten
the front seat belts - first as a
warning, then to prepare for an
impending crash. (see page 24).
The CMBS consists of a radar sensor
in the front grille, a brake actuator in
the engine compartment, an
indicator on the instrument panel,
seat belt e-pretensioners on the front
seats, and an on/off button on the
dashboard.RADAR SENSOR
BRAKE
ACTUATORSEAT BELT
e-PRETENSIONERS
CONTINUED
Collision Mitigation Braking System™(CMBS™)
463
Driving

Distance between vehicles
CMBS
The radar sensor
detects a vehicleE-pretensionerAudio & Visual
WARNINGSBraking
Stage oneThere is a risk of a
collision with the
vehicle ahead of you.
—
‘‘BRAKE’’flashes
on the multi-
information
display.
—
A beep sounds
and‘‘BRAKE’’
flashes on the
multi-information
display. Stage twoThe 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.
Lightly
applied
Stage three
ᤳ
The CMBS determines
that a collision is
unavoidable.Forcefully tightens
driver and front
passenger seat belts.
Forcefully
applied
ᤳ: Depending on the circumstances, CMBS may not go through all of the alert stages before initiating the last stage.
YOUR
VEHICLEVEHICLE
AHEAD
YOUR
VEHICLEVEHICLE
AHEAD
YOUR
VEHICLEVEHICLE
AHEAD
Collision Mitigation Braking System™(CMBS™)466

CMBS OFF ButtonTo switch the CMBS off, press the
CMBS OFF button on the dashboard
for about 1 second. When you do
this, a beeper sounds, a CMBS
indicator on the instrument panel
comes on, and a CMBS OFF
message appears on the multi-
information display. To switch the
system back on, press the button
again for about 1 second.When you turn the ignition switch to
the ON (II) position, the CMBS will
be in the previously selected on or off
setting.Automatic Shut Off
Any of the conditions below can
cause the CMBS to shut off. When
the system shuts off, the CMBS
indicator in the instrument panel
comes on, and a CHECK CMBS
SYSTEM message appears on the
multi-information display for about 5
seconds.
●
An abnormal tire condition is
detected (wrong tire size, flat tire,
etc.).
●
Extended off-road or mountainous
driving.
●
Driving your vehicle with the
parking brake applied.
●
Driving your vehicle in bad
weather (rain, fog, snow, etc.).
●
A dirty radar sensor cover on the
front grille.
CMBS OFF BUTTON
CONTINUED
Collision Mitigation Braking System™(CMBS™)
467
Driving

Handling Crosswinds and BuffetingCrosswinds and air turbulence
caused by passing trucks can disrupt
your steering and cause the trailer to
sway. When being passed by a large
vehicle, keep a constant speed, and
steer straight ahead. Do not try to
make quick steering or braking
corrections.Backing UpAlways drive slowly and have
someone guide you when backing
up. Grip the
bottom
of the steering
wheel, then turn the wheel to the left
to get the trailer to move to the left.
Turn the wheel to the right to move
the trailer to the right.
ParkingFollow all normal precautions when
parking, including putting the
transmission in Park and firmly
setting the parking brake. Also, place
wheel chocks at each of the trailer's
tires.
Retrieving a BoatIf the vehicle tires slip when
retrieving a boat from the water,
keep the transmission in the D
position and do not use the
sequential sport shift mode. This
prevents the transmission damage.
Towing Your Vehicle
Your vehicle is not designed to be
towed behind a motor home. If your
vehicle needs to be towed in an
emergency, see page 572.Trailer Stability Assist
Your vehicle is equipped with trailer
stability assist function. This function
works on the same sensors as the
vehicle stability assist (VSA) system.
This function helps to stabilize the
vehicle/trailer combination when the
trailer severely sways or oscillates.
For more information on the VSA
system, see page 473.
If the function detects vehicle/trailer
instability, it checks if the swaying is
caused by the trailer, and if the
trailer swaying or oscillation is
increasing.
The vehicle/trailer combination is
more affected by crosswinds,
buffeting, and improper tongue load.
These conditions can make the
trailer unstable, and cause it to sway.
Towing a Trailer, Trailer Stability Assist498