sensor Acura RL 2007 Owner's Guide

The radar sensor is located behind
the Acura emblem in the f ront grille.
If the emblem 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-inf ormation
display f or about 5 seconds.Always keep the emblem clean. If it
gets dirty, clean it with water or a
mild detergent. Never use chemical
solvents or polishing powder.Do not allow anything to impact the
radar sensor or the emblem. If either
of these parts receives a strong
impact, turn off the system by
pressing the CMBS of f switch, and
have your vehicle checked by a
dealer. If the f ront grille ever needs
to be repaired, consult a dealer f irst.
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. If the f ront emblem or the radar
sensor ever needs to be removed,
take your vehicle to a dealer.
Collision Mitigation Brake System (CMBS)
Radar Sensor
356
EMBLEM
BOLTS
(Do not tamper)
——
y
y
(y
y

When the CMBS is on, the radar
sensor constantly scans for vehicles
ahead of you. This means that
driving on a ro ad 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. The
radar sensor may not always
scan as intended. Here are two
examples:
Thetiresarenotcorrectly
maintained. Always make sure the
tire pressures are correct (see
page ), and that the tires are
the correct size and in good
condition (see Tires on page ).
Your
vehicle is tilted because of a
heavy load in the rear or from
modifications to the suspension.
Do not overload your vehicle (see
Carrying Cargo on page ), and
do not make any modifi cations to
the suspension (see Accessories
and Modifications on page ).
335
333
415 415
Collision Mitigation Brake System (CMBS)
Driving
357
——
y
y
(yy

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 indicator in the
instrumental panel and the
appropriate tire position indicator on
thetirepressuremonitoronthe
multi-info rmation display (see page
)tocomeon. 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 underinflated
and cause the low tire pressure
indicator to come on. Or, if you
check and adjust your tire pressure
in cooler conditions, and drive into
extremely hot conditions, the tire
maybecomeoverinflated.However,
the low tire pressure indicator will
not come on if the tires are
overinflated.
When
the low tire pressure indicator
is on, one or more of your tires is
signifi cantly underinflated. The
multi-information 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 pressu re as indicated on the
vehicl e’s tire information placard.
Driving on a significantly under-
inflated tire causes the tire to
ov erheat and can lead to tire failure.
Under-infl ation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle’s handling and
stopping ability.
Becausetirepressure variesby
temperature and other conditions,
the low tire pressure indicator may
come on unexpectedly. Refer to page for tire inflation
guidelines.
367 367
415
CONT INUED
Low Tire Pressure
Indicator
Tire Pressure Monitoring System (TPMS)
Driving
365
——
y
y
(yy

Although your tire pressure is
monitored, you must manually check
thetirepressuresmonthly. If
you have a flat tire, the low tire
pressu re and tire monitor indicators
will come on. Replace the indicated
flat tire with the compact spare tire
(see page ).
Each
tire, including the spare, should
be checked monthly when the
vehicle is cold, and set to the
recommended inflation pressure as
sp ecified on the vehicle placard and
intheowner’smanual(seepage ). After you replace the flat tire with
the spare, the low tire pressure
indicator stays on. This is normal;
the system is not monitoring the
spare tire pressure. Manually check
the spare tire pressure to be sure it
is correct.
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.
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. 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. 415
432
Changing a T ire with T PMS
Tire Pressure Monitoring System (TPMS)
366
——
y

y
(y
y

Make sure the rear f loor mats are
properly hooked to the f loor mat
anchors. Your vehicle is equipped
with front passenger’s seat weight
sensors. If the rear passenger’s f loor
mat is on the seat rail of the front
passenger’s seat, the sensors will
detect the decreased weight on the
seat, and they may not work properly.
If you use a non-Acura f loor mat,
make sure it f its properly and that it
canbeusedwiththefloormat
anchors. Do not put additional f loor
mats on top of the anchored mats.
If you remove a f loor mat, make sure
tore-anchoritwhenyouputitback
in your vehicle. The floor mats that came with your
vehicle hook over f loor mat anchors.
This keeps the f loor mats f rom
sliding f orward or backward and
possibly interf ering with the pedals
or making the f ront passenger’s
weight sensors inef f ective. Floor Mats
Floor Mat s
412
HOOK HOOK HOOK
Front
Front Front
DRIVER’S SIDE FLOOR MAT
FRONT PASSENGER’S
SIDE FLOOR MATREAR PASSENGER’S FLOOR MAT
——
y


y
(y
y

The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI system uses sequential
multiport f uel injection.
It has three subsystems: air intake,
engine control, and f uel control. The
powertrain control module (PCM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
f uel to inject under all operating
conditions.This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manif old. Adding exhaust gas to the
air/f uel mixture reduces the amount
of NOx produced when the f uel is
burned.
The emissions control systems are
designed and certif ied to work
together in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent f or repairs. Using lower
quality parts may increase the
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.
The three way catalytic converters
are in the exhaust system. Through
chemical reactions, they convert HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), nitrogen
(N ), and water vapor.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI SystemIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
Technical Inf ormation
469
——
y

y
(yy

ÎÎÎ
..................................
Seat Heaters .178
..................
Seat Position Memory .160
.........................
Seat Ventilation .179
......................
Seats, Adjusting the .155
............................
Security System .274
.....
Sequential Sports Shif t Mode .345
..........................
Paddle Shif ters .345
...............................
Serial Number .458
...........................
Service Intervals .381
......
Service Manual, Purchasing . 477
.........
Service Station Procedures . 327
........................................
SH-AWD .350
..
Torque Distribution Monitor . 350
.......................................
Indicator .67
...
Shif t Lever Position Indicators . 343
........................
Shif t Lock Release .348
..............................
Side Airbags . 11, 32
How the Side Airbag of f ......................
Indicator Works .35
...
How Your Side Airbags Work . 32
................
Side Curtain Airbags . 11, 34
How Your Side Curtain ..........................
Airbags Work .34
Side Marker Lights, Bulb .........................
Replacement in .407
.............................
Signaling Turns .140 .....................................
Snow Tires .420
................................
Sound System .207
Spare Tire ......................................
Inf lating .431
............................
Specif ications .461
.....................
Specif ication Charts .460
................................
Speed Limiter .348
.......................................
Spotlights .196
..........
SRS, Additional Inf ormation . 26
...
Additional Safety Precautions . 37
..
How the SRS Indicator Works . 34
How Your Airbags ............................
Work . 29, 32, 34
........................
SRS Components .26
..................................
SRS Service .36
.............................
SRS Indicator . 34, 63
START (Ignition Switch .....................................
Position) .151
.......................
Starting the Engine .341
...................
Auto Control Mode . 341
In Cold Weather at High ..................................
Altitude .341
................
With a Dead Battery . 437
..............
State Emissions Testing . 471
........
Steam Coming f rom Engine . 440Steering Wheel
..............................
Adjustments .147
...........
Anti-thef t Column Lock . 151
......................
Position Memory .160
Steering Wheel Buttons/ .....................................
Switches .136
...................
Stereo Sound System . 207
....................
Storing Your Vehicle .425
......................................
Sun Visors .192
Supplemental Restraint ................................
System . 11, 26
......................................
Servicing .36
.........................
SRS Indic ator . 34, 63
...................
System Components . 26
..................................
Synthetic Oil .396
.
Taking Care of the Unexpected . 427
Technical Descriptions ......
DOT Tire Quality Grading . 462
.....
Emissions Control Systems . 468
Three Way Catalytic .............................
Converters .470
.......................
Temperature Gauge . 70
........
Temperature, Inside Sensor . 206
Index
T
VIII
——
y
y
(y
y