2012 Acura MDX sensor

Your vehicle is equipped with a tire
pressure monitoring system (TPMS)
that turns on every time you start the
engine and monitors the pressure in
your tires while driving.
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes significantly low, the sensor
in that tire immediately sends a
signal that causes the low tire
pressure/TPMS indicator in the
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
information display along with a
‘‘CHECK TIRE PRESSURE’’
message.
Low Tire Pressure/
TPMS Indicator
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is significantly underinflated.
You should stop and check your tires
as soon as possible, and inflate them
to the proper pressure as indicated
on the vehicle's tire information
placard.
It is possible that the pressures
shown on the multi-information
display and the pressures you
manually measure are slightly
different.
If the difference is significant or you
cannot make the low tire pressure/
TPMS indicator and message on the
multi-information display go out after
inflating the tires to the specified
values, have your dealer check the
system as soon as possible.If you think you can safely drive a
short distance to a service station,
proceed slowly to the station, then
inflate the tire to the recommended
pressure.
If the tire is flat, or if the tire pressure
is too low to continue driving, replace
the tire with the compact spare tire
(see page 551).
Driving on a significantly under-
inflated tire causes the tire to
overheat and can lead to tire failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle's handling and
stopping ability.
Because tire pressure varies by
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly.
CONTINUED
Tire Pressure Monitoring System (TPMS)
455
Driving

To see the inflation pressures of all
four tires, press the SEL/RESET
button. The display changes as
shown above.
Each tire pressure is shown in PSI
(U.S. models) or in kPa (Canadian
models).
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes significantly low, the sensor
in that tire immediately sends a
signal that causes the low tire
pressure/TPMS indicator in the
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
information display along with a
‘‘CHECK TIRE PRESSURE’’
message.
U.S. model
Canadian model
This shows that front left tire
is losing pressure.
CONTINUED
Tire Pressure Monitoring System (TPMS)
457
Driving

If the low tire pressure/TPMS
indicator comes on, or the multi-
information display shows a‘‘CHECK
TPMS SYSTEM’’message, the VSA
system automatically turns on even
when the VSA system is turned off
by pressing the VSA OFF button
(see page 474). If this happens, you
cannot turn the VSA system off by
pressing the VSA OFF button again.
When you restart the vehicle with
the compact spare tire, the TPMS
system message will also be
displayed on the multi-information
display after several miles
(kilometers) driving.Changing a Tire with TPMS
If you have a flat tire, the low tire
pressure/TPMS and tire monitor
indicators will come on. Replace the
indicated flat tire with the compact
spare tire (see page 551).
After the flat tire is replaced with the
spare tire, the low tire pressure/
TPMS indicator stays on while
driving. After several miles
(kilometers) driving, this indicator
begins to flash, then stays on again.
You will also see a‘‘CHECK TPMS
SYSTEM’’message on the multi-
information display. This is normal;
the system cannot monitor the spare
tire pressure. Manually check the
spare tire pressure to be sure it is
correct.This indicator and the warning
message on the multi-information
display will go off, after several miles
(kilometers) driving, when the spare
tire is replaced with the specified
regular tire equipped with the tire
pressure monitor sensor.
Each wheel is equipped with a tire
pressure sensor. You must use
TPMS specific wheels. It is
recommended that you always have
your tires serviced by your dealer or
a qualified technician.
Never use a puncture-repairing agent
in a flat tire. If used, you will have to
replace the tire pressure sensor.
Have the flat tire repaired by your
dealer as soon as possible.
CONTINUED
Tire Pressure Monitoring System (TPMS)
459
Driving

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

Radar SensorThe radar sensor is located under the
Acura emblem in the front grille. If
the radar sensor cover is covered
with mud, dirt, dead leaves, wet
snow, etc., or if you put a sticker on
it, the CMBS will automatically shut
off, and the CMBS indicator on the
instrument panel will come on. You
will also see a‘‘CHECK CMBS
RADAR SENSOR’’message on the
multi-information display for about 5
seconds.
Always keep the radar sensor cover
clean. If it gets dirty, clean it with
water or a mild detergent. Never use
chemical solvents or polishing
powder.
There are three bolts on the sides of
the radar sensor. Do not tamper with
these bolts, or you may cause the
system to malfunction.Do not allow anything to impact the
radar sensor or the radar sensor
cover. If either of these parts receives
a strong impact, switch the system
off by pressing the CMBS off button,
and have your vehicle checked by a
dealer. If the front grille ever needs
to be repaired, consult a dealer first.
If the radar sensor cover or the radar
sensor ever needs to be removed,
take your vehicle to a dealer.
When the CMBS is on, the radar sensor
constantly scans for vehicles directly
ahead of you. This means that driving
on a road with a few or no vehicles
could cause a CHECK CMBS RADAR
SENSOR message to appear on the
multi-information display. This is
normal and not a cause for concern.
RADAR SENSOR COVER
BOLTS
(Do not tamper)
Collision Mitigation Braking System™(CMBS™)464

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

The CMBS will automatically switch
on again if the conditions that caused
it to switch off are improved.CMBS Indicator
This indicator comes on for several
seconds when you turn the ignition
switch to the ON (II) position. It also
comes on and stays on when you
turn the CMBS off by pressing the
CMBS OFF button.
To switch the CMBS back on, make
sure the vehicle is stopped and the
ignition switch is in the ON (II)
position, then press the CMBS OFF
button for about 1 second.The CMBS indicator normally comes
on under these conditions:
●
When you manually switch off the
system.
●
When the system shuts off
automatically.
●
When you drive in bad weather
(rain, snow, fog, etc.).
●
If anything covers the radar sensor
cover (dirt, mud, dry leaves, wet
snow, etc.).
CMBS INDICATOR
Collision Mitigation Braking System™(CMBS™)468