2011 ACURA RL sensor

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If equipped
The collision mitigation braking
system (CMBS ) can assist the
driver when there is a possibility of
colliding with the vehicle in f ront of
yours. It is designed to reduce the
speed of your vehicle bef ore an
unavoidable collision occurs and, if
possible, to alert you to a potential
collision while there is time f or 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 f ollowing: 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 ).
The CMBS consists of a radar
sensor in the f ront grille, a brake
actuator in the engine compartment,
an indicator on the instrument panel,
seat belt e-pretensioners on the f ront
seats,andanon/off buttononthe
dashboard.
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Collision Mitigation Braking System (CMBS )
Overview
418
RADAR SENSOR
BRAKE
ACTUATOR SEAT BELT
e-PRETENS
IONERS
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The radar sensor is located under
the Acura emblem in the f ront 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
of f , and the CMBS indicator on the
instrument panel will come on. You
will also see a ‘‘CHECK CMBS
RADAR SENSOR’’ message on the
multi-inf ormation display f or about 5
seconds.There are three bolts on the sides of
the radar sensor. Do not tamper with
these bolts, or you may cause the
system to malf unction.
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.
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Radar Sensor
Collision Mitigation Braking System (CMBS )
Driving
419
RADAR SENSOR COVER
BOLTS
(Do not tamper)
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Certain conditions may cause the
radar aim to be temporarily out of
proper range, such as the f ollowing
two examples:
If the radar sensor cover or the radar
sensor ever needs to be removed,
take your vehicle to a dealer. Do not allow anything to impact the
radarsensorortheradarsensor
cover. If either of these parts
receives a strong impact, switch the
system of f by pressing the CMBS
OFF button, and have your vehicle
checked by a dealer. If the f ront
grille ever needs to be repaired,
consult a dealer f irst. Thetiresarenotcorrectly
maintained. Always make sure the
tire pressures are correct (see
page ), and that the tires are
thecorrectsizeandingood
condition (see Tires on page ). Your vehicle is tilted because of a
heavy load in the rear or from
modif ications to the suspension.
Do not overload your vehicle (see
Carrying Cargo on page ), and
do not make any modif ications to
the suspension (see Accessories
and Modif ications on page ).394
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Collision Mitigation Braking System (CMBS )
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When the CMBS is on, the radar sensor
constantly scans f or vehicles directly
ahead of you. This means that driving
on a road with a f ew or no vehicles
could cause a CHECK CMBS RADAR
SENSOR message to appear on the
multi-inf ormation display. This is
normal and not a cause f or concern.
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Î
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e-pretensioner
The radar sensor
detects a vehicle. Braking
Audio & Visual
WARNING
Stage one
Stage three Distance between vehicles
CMBS
Stage two
Retracts the driver’s
seat belt gently a few
times, providing a
physical warning.
Forcefully tightens
driver and front
passenger seat belts.
There is a risk of a
collision with the
vehicle ahead of you.
The risk of a collision
hasincreased,timeto
respond is reduced.
The CMBS
determines that a
collision is
unavoidable.
Lightly
applied
Forcefully applied
‘‘BRAKE’’ f lashes
on the multi-
information
display.
A beep sounds
and ‘‘BRAKE’’
flashes on the
multi-information
display.
:
Depending on the circumstances, CMBS may not go through all of the alert stages bef ore initiating the last stage.
Collision Mitigation Braking System (CMBS )
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YOUR
VEHICLE
YOUR
VEHICLE
YOUR
VEHICLE VEHICLE
AHEADVEHICLE
AHEAD
VEHICLE
AHEAD
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Any of the conditions below can
cause the CMBS to shut of f . When
the system shuts off, the CMBS
indicator in the instrument panel
comes on, and a CHECK CMBS
SYSTEM message appears on the
multi-inf ormation display f or about 5
seconds.An abnormal tire condition is
detected (wrong tire size, f lat 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
f ront grille.
To switch the CMBS of f , press the
CMBS OFF button on the dashboard
f or 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 f or about 1 second. When you turn the ignition switch to
the ON (II) position, the system will
be in the previously selected on or
off setting.
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Collision Mitigation Braking System (CMBS )
Automatic Shut Of f
CMBS OFF Button
Driving
423
CMBS OFF BUTTON
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When the VSA system indicator
comes on (see page ).
The CMBS indicator normally comes
on under these conditions:
When you manually switch of f the
system.
When the system shuts off
automatically.
When you drive in bad weather
(rain, snow, f og, etc.).
If anything covers the radar
sensor cover (dirt, mud, dry leaves,
wet snow, etc.).
The CMBS will automatically switch
on again if the conditions that caused
it to switch of f are improved.
This indicator comes on f or several
seconds when you turn the ignition
switch to the ON (II) position. It also
comesonandstaysonwhenyou
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 f or about 1 second. 435
CMBS Indicator
Collision Mitigation Braking System (CMBS )
424
CMBS INDICATOR
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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 signif icantly low, the
sensor in that tire immediately sends
a signal that causes the low tire
pressure/TPMS indicator in the
instrumental panel and the
appropriate tire position indicator on
thetirepressuremonitoronthe
multi-inf ormation display (see page)tocomeon. Refer to page for tire inflation
guidelines.
If there is a problem with the TPMS,
this indicator begins to f lash. It stops
flashing after approximately 1
minute, then stays on. You will also
see a ‘‘CHECK TPMS SYSTEM’’
message on the multi-inf ormation
display (see page ).
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is signif icantly underinf lated.
The multi-inf ormation display also
shows a ‘‘CHECK TIRE PRESSURE’’
message (see page ). 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 inf ormation placard.
Driving on a signif icantly under
inf lated tire causes the tire to
overheat and can lead to tire failure.
Underinf lation also reduces f uel
efficiency and tire tread life, and may
af f ect the vehicle’s handling and
stopping ability.
Becausetirepressurevariesby
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly. For example, if you check and fill
your tires in a warm area, then drive
in extremely cold weather, the tire
pressure will be lower than
measured and could be underinf lated
and cause the low tire pressure/
TPMS indicator to come on. Or, if
youcheckandadjustyourtire
pressure in cooler conditions, and
drive into extremely hot conditions,
the tire may become overinf lated.
However, the low tire pressure/
TPMS indicator will not come on if
thetiresareoverinflated.
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Low Tire Pressure/
TPMS Indicator
Tire Pressure Monitoring System (TPMS)
Driving
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Although your tire pressure is
monitored, you must manually check
thetirepressuresmonthly.
Each tire, including the spare, should
be checked monthly when the
vehicle is cold, and set to the
recommended inf lation pressure as
specif ied on the vehicle placard and
intheowner’smanual(seepage).
If the tire is f lat, or if the tire
pressure is too low to continue
driving, replace the tire with the
compact spare tire (see page ). If you think you can saf ely drive a
short distance to a service station,
proceed slowly to the station, then
inflate the tire to the recommended
pressure. If you have a f lat tire, the low tire
pressure/TPMS and tire monitor
indicators will come on. Replace the
indicated f lat tire with the compact
sparetire(seepage ).
After the flat tire is replaced with the
spare tire, the low tire pressure/
TPMS indicator stays on while
driving. Af ter several miles
(kilometers) driving, this indicator
begins to f lash, then stays on again.
You will also see a ‘‘CHECK TPMS
SYSTEM’’ message on the multi-
inf ormation display. This is normal;
the system cannot monitor the spare
tire pressure. Manually check the
sparetirepressuretobesureitis
correct.
This indicator and the warning
message on the multi-inf ormation
display will go of f , af ter several miles
(kilometers) driving, when the spare
tire is replaced with the specifiedregular tire equipped with the tire
pressure monitor sensor.
Never use a puncture-repairing agent
in a f lat tire. If used, you will have to
replace the tire pressure sensor.
Havetheflattirerepairedbyyour
dealer as soon as possible.
Each wheel is equipped with a tire
pressure sensor mounted inside the
tire behind the valve stem. You must
use TPMS specif ic wheels. It is
recommended that you always have
your tires serviced by your dealer or
a qualif ied technician.
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Changing a T ire with T PMS
Tire Pressure Monitoring System (TPMS)
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