2008 Acura RL brakes

This section gives you tips on
starting the engine under various
conditions, and how to operate the
automatic transmission. It also
includes important inf ormation on
parking your vehicle, the braking
system, the Super handling-all wheel
drive (SH-AWD) system, the vehicle
stability assist (VSA) system, the tire
pressure monitoring system (TPMS),
the collision mitigation brake system
(CMBS), and f acts you need if you
are planning to tow a trailer.........................
Preparing to Drive .346
.......................
Starting the Engine .347
Check Starting System
.................................
Message .348
..............
Automatic Transmission .349
Super Handling-All Wheel Drive
...................
(SH-AWD) System .356
...........................................
Parking .357
.............................
Braking System .358
................
Anti-lock Brakes(ABS) .359
Collision Mitigation Brake
........................
System (CMBS) .361
Tire Pressure ...
Monitoring System (TPMS) .371
Vehicle Stability Assist (VSA) ........................................
System .377
...........................
Towing a Trailer .379
...................
Towing Your Vehicle .384
Driving
Driving
345
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2008 RL

If the SH-AWD indicator on the
instrument panel stays on, and the
multi-inf ormation display shows an
SH-AWD message, there is a
problem with the system. Your
vehicle still has normal f ront-wheel
drive with vehicle stability assist
(VSA), but does not have the
advantages of SH-AWD. Have your
vehicle checked by a dealer as soon
as possible.Check the indicator on the
instrument panel to verif y that the
security system is set.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb.
If the vehicle is f acing uphill, turn
the front wheels away from the
curb.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.
Set the parking brake bef ore you put
the transmission in Park. This keeps
the vehicle from moving and putting
pressure on the parking mechanism
in the transmission.
Make sure the moonroof and the
windows are closed.
Turn of f the lights.
Place any packages, valuables, etc.,
in the trunk or take them with you.
Lock the doors.
Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly or
your vehicle may roll if it is on an
incline.
Parking
Parking T ips
Super Handling-A ll Wheel Drive (SH-A WD) System, Parking
Driving
357
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2008 RL

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, and reduces their ef f ectiveness
and reduces brake pad life. 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.
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359
Braking System
Braking System Design
Brake Pad Wear Indicators
358
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2008 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
Anti-lock Brakes (ABS)
ABS Indicator
Driving
359
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2008 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.
449
Anti-lock Brakes (ABS)
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.
360
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2008 RL

The CMBS does not activate if the
speed dif f erence between your
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
Collision Mitigation Brake System (CMBS)
Overview
Driving
361
RADAR SENSOR
BRAKE ACTUATOR SEAT BELT
E-PRETENS
IONER
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2008 RL

If the system senses a likely collision
with a vehicle or object ahead of you,
it alerts you with an audible and a
visual alarm.The audible alarm is a constant
beeping sound; the visual alert is an
amber colored BRAKE message that
f lashes on the multi-inf ormation
display. If these alarms come on,
take the appropriate means to
prevent a collision (apply the brakes,
change lanes, etc.).To turn the CMBS off, press the
CMBS OFF switch 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
turn the system back on, press the
switch again for about 1 second.
Collision Alarm CMBS OFF Switch
Collision Mitigation Brake System (CMBS)
364
CMBS OFF SWITCH
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2008 RL

CONT INUED
A vehicle cuts in f ront of you and
brakes suddenly.
When you accelerate rapidly and
approach the vehicle ahead of you
at high speed.Driving in heavy, stop-and-go
traffic.
The vehicle ahead of you is a
motorcycle or other small vehicle.
Immediately af ter you drive of f .
The CMBS may not activate under
some conditions. Here are a f ew
examples:
The distance between your vehicle
and the vehicle ahead of you is too
short.
A vehicle cuts in f ront of you at a
slow speed.
Collision Mitigation Brake System (CMBS)
Limitations
Driving
367
YOUR VEHICLE
YOUR VEHICLE
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2008 RL