2009 Acura RL steering

Your vehicle is equipped with disc
brakes at all f our wheels. A power
assist helps reduce the ef f ort needed
on the brake pedal. The brake pedal
assist f unction increases the f orce
you apply to the brake pedal during
an emergency stop. When the brake
pedal assist is activated, the e-
pretensioners (if equipped) tighten
f ront seat belts (see page ). The
anti-lock brake system (ABS) helps
you retain steering control when
braking very hard (see page ).
Resting your f oot on the pedal keeps
the brakes applied lightly, builds up
heat, reduces their ef f ectiveness and
reduces brake pad lif e. In addition,
f uel economy can be reduced. It also
keeps your brake lights on all the
time, conf using drivers behind you.The hydraulic system that operates
the brakes has two separate circuits.
Each circuit works diagonally across
the vehicle (the lef t-f ront brake is
connected with the right-rear brake,
etc.). If one circuit should develop a
problem, you will still have braking
at two wheels.
Constant application of the brakes
when going down a long hill builds
up heat and reduces their ef f ective-
ness. Use the engine to assist the
brakes by taking your f oot of f the
accelerator and downshif ting to a
lower gear.
Check the brakes after driving
through deep water. Apply the
brakes moderately to see if they f eel
normal. If not, apply them gently and
f requently until they do. Be extra
cautious in your driving.
If the brake pads need replacing, you
will hear a distinctive, metallic
screeching sound when you apply
the brake pedal. If you do not have
the brake pads replaced, they will
screech all the time. It is normal f or
the brakes to occasionally squeal or
squeak when you apply them.
24
417 Braking System Design
Brake Pad Wear Indicators
Braking System
416
2009 RL

The anti-lock brake system (ABS)
helpspreventthewheelsfrom
locking up, and helps you retain
steering control by pumping the
brakes rapidly, much f aster than a
person can do it.If this indicator comes on, the anti-
lock f unction of the braking system
has shut down. The brakes still work
like a conventional system, but
without anti-lock. You should have
your dealer inspect your vehicle as
soon as possible.
You will f eel a pulsation in the brake
pedal when the ABS activates, and
you may hear some noise. This is
normal: it is the ABS rapidly
pumpingthebrakes.Ondry
pavement, you will need to press on
thebrakepedalveryhardbeforethe
ABS activates. However, you may
feel the ABS activate immediately if
you are trying to stop on snow or ice.
Let the ABS work f or you by always
keeping f irm, steady pressure on the
brake pedal. This is sometimes
ref erred to as ‘‘stomp and steer.’’
The electronic brake distribution
(EBD) system, which is part of the
ABS, also balances the f ront-to-rear
braking distribution according to
vehicle loading. When the ABS indicator comes on,
you will also see a ‘‘CHECK ABS
SYSTEM’’ message on the multi-
inf ormation display.
You should never pump the brake pedal.
CONT INUED
ABS Indicator
Anti-lock Brakes (ABS)
Driving
417
2009 RL

on loose or
uneven surfaces, such as gravel or
snow, than a vehicle without anti-
lock.
It only helps with steering
control during braking.
such as trying to take a
corner too f ast or making a sudden
lane change. Always drive at a safe
speed f or the road and weather
conditions.
Always steer moderately
when you are braking hard. Severe
or sharp steering wheel movement
can still cause your vehicle to veer
into oncoming traffic or off the road.
If the ABS indicator and the brake
system indicator come on together,
and the parking brake is f ully
released, the EBD system may also
be shut down.
Test your brakes as instructed on
page . If the brakes f eel normal,
drive slowly and have your vehicle
repaired by your dealer as soon as
possible. Avoid sudden hard braking
which could cause the rear wheels to
lock up and possibly lead to a loss of
control.
The VSA indicator will come on
alongwiththeABSindicator.
508
A vehicle with A BS may require a
longer distance to stop
Important Saf ety Reminders
A BS does not reduce the time or
distance it takes to stop the
vehicle.
A BS will not prevent a skid that
results f rom changing direction
abruptly,
A BS cannot prevent the loss of
stability.
Anti-lock Brakes (ABS)
418
2009 RL

The CMBS does not activate if the
speed dif f erence between the two
vehicles is less than 10 mph (15
km/h). CMBS may also not
activate if you turn the steering
wheel to avoid the collision.
When the CMBS activates, the brake
lights also come on.
The collision mitigation brake
system (CMBS) can assist you when
there is a possibility of your vehicle
hitting the vehicle in f ront of you. 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
thereistimetopreventit.Hereisa
brief description of what the CMBS
can do:
When your speed is above 10 mph
(15 km/h), the CMBS radar
sensor in the f ront grille can sense
a vehicle ahead of you. When your
vehicle gets too close to the
vehicle ahead of you, the system
mayactivateawarningbeep,
causing automatic application of
the brakes, and causing the
e-pretensioners to tighten the
f ront seat belts (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 switchonthe
dashboard.
24
If equipped
Overview
Collision Mitigation Brake System (CMBS)
Driving
419
RADAR SENSOR
BRAKE
ACTUATOR SEAT BELT
e-PRETENS
IONERS
2009 RL

As required by the FCC:This device complies with Part 15 of theFCC rules. Operation is subject to thef ollowing two conditions: (1) This devicemay not cause harmf ul interf erence, and(2) this device must accept anyinterf erence received, includinginterf erence that may cause undesiredoperation.
Changes or modif ications not expresslyapproved by the party responsible f orcompliance could void the user’sauthority to operate the equipment.
This device complies with IndustryCanada Standard RSS-210.Operation is subject to the f ollowing twoconditions: (1) this device may not causeinterf erence, and (2) this device mustaccept any interf erence that may causeundesired operation of the device.
Themainpurposeof theCMBSisto
reduce the severity of injuries
caused by an unavoidable collision.
While the CMBS may help to alert
you and minimize the severity of a
collision, it may not activate in every
dangerous situation.
Even with the CMBS, it is still your
responsibility to operate the brake
pedal and steering wheel
appropriately, according to the
driving conditions.
Important Saf ety Reminder
Collision Mitigation Brake System (CMBS)
428
2009 RL

Your vehicle has been designed
primarily to carry passengers and
their cargo. You can also use it to
tow a trailer if you caref ully observe
the load limits, use the proper
equipment, and f ollow the guidelines
in this section.The weight that
the tongue of a f ully-loaded trailer
puts on the hitch should be
approximately 10 percent of the
trailer weight. Too much tongue
load reduces front-tire traction and
steering control. Too little tongue
load can make the trailer unstable
and cause it to sway.
The
maximum allowable weight of the
trailer and everything in or on it
must not exceed 1,000 lbs (450 kg).
Towing a load that is too heavy
can seriously af f ect your vehicle’s
handling and perf ormance. It can
also damage the engine and
drivetrain.
CONT INUED
Load Limits
Tongue Load:
T otal T railer Weight:
Towing a Trailer
Driving
437
Exceeding any load limit or
improperly loading your vehicle
and trailer can cause a crash in
which you can be seriously hurt
or killed.
Check the loading of your
vehicle and trailer carefully
beforestartingtodrive.
2009 RL

Crosswinds 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.
Follow all normal precautions when
parking, including f irmly setting the
parking brake and putting the
transmission in Park. Also, place
wheel chocks at each of the trailer’s
tires.
When climbing hills, closely watch
your temperature gauge. If it nears
the red (Hot) mark, turn the air
conditioning of f , reduce speed and, if
necessary, pull to the side of the
road to let the engine cool.
Always drive slowly and have
someone guide you when backing up.
Grip the of the steering
wheel; turn the wheel to the lef t to
get the trailer to move to the lef t,
andturnthewheelrighttomovethe
trailer to the right.Your vehicle is not designed to be
towed behind a motor home. If your
vehicle needs to be towed in an
emergency, see page .
If you must stop when f acing uphill,
use the f oot brake or parking brake.
Do not try to hold the vehicle in
placebypressingontheaccelerator,
as this can cause the automatic
transmission to overheat.
When driving down hills, reduce
your speed, and shif t down to S
position, or use the paddle shif ters to
the lower gear (3, 2 or 1) in the S
position. When towing a trailer, do
not ‘‘ride’’ the brakes, and remember,
it will take longer to slow down and
stop when towing a trailer. 519
bottom
Backing Up
Handling Crosswinds and Buf f et ing
Parking
Driving on Hills
Towing Your Vehicle
Towing a Trailer, Towing Your Vehicle
442
2009 RL

This section explains why it is
important to keep your vehicle well
maintained and how to f ollow basic
maintenance saf ety precautions.
If you have the skills and tools to
perf orm more complex maintenance
tasks on your vehicle, you may want
to purchase the service manual. See
page f or inf ormation on how to
obtain a copy, or see your dealer.
This section also includes
instructions on how to read the
maintenance minder messages on
the multi-information display, and
instructions f or simple maintenance
tasks you may want to take care of
yourself .......................
Maintenance Saf ety .444
....................
Maintenance Minder .445
..............................
Fluid Locations .455
......
Engine Compartment Covers .456
........................
Adding Engine Oil .458
Changing the Engine Oil and
...........................................
Filter .459
..............................
Engine Coolant .461
....................
Windshield Washers .464
....
Automatic Transmission Fluid .464
....................................
Brake Fluid .466
....................
Power Steering Fluid .466
....................................
Timing Belt .467
.............................................
Lights .468
..................
DustandPollenFilter .476
................
Cleaning the Seat Belts .476
.....................................
Floor Mats .477
.................................
Wiper Blades .478
...........................................
Wheels .480
...............................................
Tires .480
...................
Checking the Battery .489
.............................
Vehicle Storage .492
541
Maintenance
Maint enance
443
2009 RL