Page 320 of 560

You can increase the set cruising
speed in any of these ways:You can decrease the set cruising
speed in any of these ways:
Press and hold the RES/ACCEL
button. When you reach the
desired cruising speed, release the
button.
Push on the accelerator pedal.
Accelerate to the desired cruising
speed, then press the SET/
DECEL button. Press and hold the SET/DECEL
button. Release the button when
you reach the desired speed.
To increase your speed in very
small amounts, tap the RES/
ACCEL button. Each time you do
this, the vehicle speeds up about 1
mph (1.6 km/h).
Cruise control may not hold the set
speed when you are going up and
down hills. If your speed increases
going down a hill, use the brakes to
slow down. This will cancel cruise
control. On models with adaptive
cruise control (ACC), this also
causes the cruise control icon on the
multi-inf ormation display to go of f
and the cruise mode icon to come on.
To resume the set speed, press the
RES/ACCEL button. The CRUISE
CONTROLicononthemulti-
inf ormation display will come back
on.
When climbing a steep hill, the
automatic transmission may
downshif t to hold the set speed.
To slow down in very small
amounts, tap the SET/DECEL
button. Each time you do this,
your vehicle will slow down about
1 mph (1.6 km/h).
Tap the brake pedal lightly with
your f oot. The CRUISE
CONTROLicononthemulti-
inf ormation display will go out.
When the vehicle slows to the
desired speed, press the SET/
DECEL button.
CONT INUED
Changing the Set Speed
Cruise Control
Features
317
2009 RL
Page 390 of 560

Park the vehicle, and set the
parking brake. Pull the hood
release lever located under the
lower lef t corner of the dashboard.
The hood will pop up slightly.
Your vehicle’s on board diagnostic
system will detect a loose or missing
f uel f ill cap as an evaporative system
leak. The f irst time a leak is detected
a ‘‘TIGHTEN FUEL CAP’’ message
appears on the multi-inf ormation
display. Turn the engine of f , and
conf irm the f uel f ill cap is installed. If
it is, loosen it, then retighten it until
it clicks at least once. The message
should go of f af ter several days of
normal driving once you tighten or replace the f uel f ill cap. To scroll to
another message, press the INFO
button. The ‘‘TIGHTEN FUEL CAP’’
message will appear each time you
restart the engine until the system
turns the message of f .
If the system still detects a leak in
the vehicle’s evaporative emissions
system, the malf unction indicator
lamp (MIL) comes on. If the f uel f ill
cap was not already tightened, turn
the engine of f , and check or
retighten the f uel f ill cap until it
clicks at least once. The MIL should
go off after several days of normal
driving once the cap is tightened or
replaced. If the MIL does not go of f ,
have your vehicle inspected by a
dealer. For more inf ormation, see
page .
1.
507
CONT INUED
Opening and Closing the Hood
Tighten Fuel Cap Message
Service Station Procedures
Bef ore Driving
387
HOOD RELEASE LEVER
2009 RL
Page 396 of 560

Bef ore installing any accessory:Make sure the accessory does not
obscure any lights, or interf ere
with proper vehicle operation or
perf ormance.
Modif ying your vehicle, or installing
some non-Acura accessories, can
make your vehicle unsaf e. Bef ore
you make any modif ications or add
anyaccessories,besuretoreadthe
f ollowing inf ormation.
Your dealer has Acura accessories
that allow you to personalize your
vehicle. These accessories have
been designed and approved f or your
vehicle, and are covered by warranty.
Bef ore installing any electronic
accessory, have the installer
contact your dealer. If possible,
have your dealer inspect the f inal
installation.
Be sure electronic accessories do
not overload electrical circuits
(see page ) or interf ere with
the proper operation of your
vehicle.
Do not install accessories on the
side pillars or across the rear
windows. Accessories installed in
theseareasmayinterferewith
proper operation of the side
curtain airbags.
Although non-Acura accessories may
f it on your vehicle, they may not
meet f actory specif ications, and
could adversely af f ect your vehicle’s
handling and stability.
When properly installed, cellular
phones, alarms, two-way radios, and
low-powered audio systems should
not interf ere with your vehicle’s
computer controlled systems, such
as your airbags, anti-lock brakes, and
tire pressure monitoring system. 510
A ccessories
A ccessories and Modif ications
Bef ore Driving
393
Improper accessories or
modifications can affect your
vehicle’s handling, stability, and
performance, and cause a
crash in which you can be hurt
or killed.
Follow all instructions in this
owner’s manual regarding
accessories and modifications.
2009 RL
Page 418 of 560

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.
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.
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.
Parking T ips
Parking
Driving
415
2009 RL
Page 419 of 560

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
Page 422 of 560

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
Page 430 of 560
When you pass a low bridge at
high speed.When you approach train tracks at
the bottom of a hill and you do not
apply the brakes.Because of the road condition
(curved, winding, etc.) or the state of
your vehicle (turning angle, lane
position, etc.), CMBS can sometimes
mistake a stationary object (light
pole, traf f ic sign, etc.) as a vehicle
ahead of you and temporarily
operate. This is normal.
When you go over a sharp-edged
speed bump at high speed.
When you go over areas of
construction on the road surface.
Collision Mitigation Brake System (CMBS)
Driving
427
LOW BRIDGE
RAILS YOUR VEHICLE
SIGN, POLE, etc.
2009 RL
Page 442 of 560

Always use saf ety chains when you
tow a trailer. Make sure the chains
are secured to the trailer and hitch,
and that they cross under the tongue
and can catch the trailer if it
becomes unhitched. Leave enough
slack to allow the trailer to turn
corners easily, but do not let the
chains drag on the ground.If you choose electric brakes, be
sure they are electronically actuated.
Do not attempt to tap into your
vehicle’s hydraulic system. No
matter how successf ul it may seem,
any attempt to attach trailer brakes
to your vehicle’s hydraulic system
will lower braking ef f ectiveness and
create a potential hazard.
Seeyourtrailerdealerorrental
agency f or more inf ormation on
installing electric brakes.Trailer lights and equipment must
comply with f ederal, state/province,
and local regulations. Check with
your local trailer sales or rental
agencies f or the requirements in the
area where you plan to tow, and use
only equipment designed f or your
vehicle.
Since lighting and wiring vary by
trailer type and brand, you should
have a qualified technician install a
suitable connector between the
vehicle and the trailer. Improper
equipment or installation can cause
damage to your vehicle’s electrical
system and af f ect your vehicle
warranty.
There are two common types of
trailer brakes: surge and electric.
Surge brakes are common f or boat
trailers, since the brakes will get wet.
CONT INUED
Saf et y Chains T railer L ight s
Trailer Brakes
Towing a Trailer
Driving
439
2009 RL