engine Acura RL 2009 Workshop Manual

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When you move the shif t lever f rom
‘‘D’’ to ‘‘S’’ position and pull either
paddle shif ter, the gear position
indicator displays ‘‘M’’ along with the
selected gear number.
To upshif t, pull the (right) paddle
shif ter. To downshif t, pull the
(lef t) paddle shif ter. When you accelerate f rom a stop,
the transmission starts in f irst gear,
and you must manually upshif t
between f irst and f if th gears. Make
sure you upshif t bef ore the engine
speed reaches the tachometer’s red
zone.
The transmission remains in the
selectedgear(5,4,3,2,or1).There
is no automatic downshif t when you
push the accelerator pedal to the
f loor.
When you are driving in 4th or 5th
gear, the transmission downshifts to
the lower gear under the f ollowing
conditions:
The vehicle slows down to a
certain speed.
You press the brake pedal.
With the shif t lever in S position, you
can select the sequential shif t mode
to shif t gears; much like a manual
transmission using the paddle
shif ters, but without a clutch pedal.
To enter the sequential shif t mode,
pressthereleasebuttononthefront
of the shift lever, move the lever to
the S position, then pull either paddle
shif ter. To cancel the sequential shif t
mode and return to the ordinary
automatic transmission, move the
shif t lever f rom the S position. When
moving the shift lever, be careful not
to operate incorrectly. While you are
driving in the sequential shif t mode,
the transmission will not
automatically return to ordinary
automatic transmission.
CONT INUED
Using the Paddle Shif ters in S
position (Sequential Shif t Mode)
Driving with the Paddle Shif ters
Driving
411
GEAR POSITION INDICATOR
‘‘M’’ INDICATOR
2009 RL

à
à
à
à
à
à
à
à
Downshifting with the paddle shifter
allows you to increase the engine
braking when going down steep or
long hills, and provides more power
when climbing uphills. You can
upshif t the transmission manually to
reduce the rpm. Driving in the
higher gear helps f uel economy.
To Shift
from
12
23
34
45
Here are the speed ranges f or
upshif ting and downshif ting.
The automatic transmission will not
allow you to shif t up or down if :
You downshif t bef ore the engine
speed f alls below the upper limit of
the lower gear.
If you try to do this, the gear
position indicator will f lash the
numberof thelowergearseveral
times, then return to a higher gear.
Also, you cannot upshif t with the
paddle shif ter bef ore the engine
speed reaches the lower limit of
the higher gear.
You try to shif t to third or a higher
gear when the vehicle is stationary.
You pull one of the two paddle
shifters with another paddle
shif ter being pressed.
You pull both paddle shif ters at
thesametime. Speed range
over 0 mph (0 km/h)
over 9 mph (15 km/h)
over 17 mph (27 km/h)
over 38 mph (60 km/h)
Speed range
under 131 mph (210 km/h) under 94 mph (150 km/h)
under 63 mph (100 km/h) under 31 mph (50 km/h)
The transmission also shif ts
automatically as the vehicle comes to
a complete stop. It downshif ts to f irst
gear when the vehicle speed reaches
9mph(15km/h)orless.
To Shiftfrom
54
43
32
21
Driving with the Paddle Shif ters
412
2009 RL

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CONT INUED
TheSH-AWDtorquedistribution
monitor on the multi-inf ormation
display shows you the amount of
torque being sent to the wheels.
Each wheel right f ront (RF), lef t
front(LF),rightrear(RR),andleft
rear (LR) has its own torque
indicator.
The super handling-all wheel drive
(SH-AWD) system is a f ull time all-
wheel-drive system that
automatically controls and transfers
varying amounts of engine torque to
all wheels independently, according
to the driving conditions.
While the SH-AWD system helps to
enhance the vehicle’s driving
stability in all situations, it is still
your responsibility to drive and
corner at reasonable speeds and to
leave a sufficient margin of safety.
When you are in sequential shif t
mode, and the vehicle is stopped,
pull the (right) paddle shifter to
shif t to second gear. You will see
‘‘M2’’ in the display. Starting in
second gear helps to reduce
wheelspin in deep snow or on a
slippery surf ace.
SH-AWD T orque Distribution
Monitor
St art ing in Second Gear
Super Handling-A ll Wheel Drive (SH-A WD)System
Driving
413
TORQUE INDICATOR
TORQUE INDICATOR
TM
2009 RL

Each torque indicator is displayed as
a bar graph divided into 5 segments.
The number of segments represents
the amount of torque distributed to
each wheel.
When there is only a slight change in
torque distribution while driving,
such as cruising on level roads at the
same speed, the torque distribution
monitor may stop displaying the
amount of torque. This is not a
system problem. The monitor will
show the amount if the system
senses any change in torque
distribution.If the SH-AWD indicator blinks while
driving, it indicates the dif f erential
temperature is too high. You will also
see an ‘‘SH-AWD DIFF TEMP.
HIGH’’ message on the multi-
inf ormation display. If this happens,
pull to the side of the road when it is
saf e, shif t to Park, and let the engine
idle until the indicator goes out. If
the indicator does not go out, take
your vehicle to a dealer to have it
checked.
If the SH-AWD indicator on the
instrument panel stays on, and the
‘‘CHECK SH-AWD SYSTEM’’
message also appears on the multi-
inf ormation display, there is problem
with the SH-AWD 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.
Super Handling-A ll Wheel Drive (SH-A WD)System
414
TM
2009 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, 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 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

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.
431 431
480
433
CONT INUED
Low Tire Pressure/
TPMS Indicator
Tire Pressure Monitoring System (TPMS)
Driving
429
2009 RL

The vehicle stability assist (VSA)
system helps to stabilize the vehicle
during cornering if the vehicle turns
more or less than desired. It also
assists you in maintaining traction
while accelerating on loose or
slippery road surf aces. It does this
by regulating the engine’s output and
by selectively applying the brakes.When VSA activates, you will see the
VSA activation indicator blink (see
page ).
If this indicator comes on while
driving, pull to the side of the road
when it is saf e, and turn of f the
engine. Reset the system by
restarting the engine. If the VSA
system indicator stays on or comes
back on while driving, have the VSA
system inspected by your dealer.
When VSA activates, you may notice
that the engine does not respond to
the accelerator in the same way it
does at other times. There may also
be some noise f rom the VSA
hydraulic system. You will also see
the VSA activation indicator blink.
The VSA system cannot enhance the
vehicle’s driving stability in all
situations and does not control your
vehicle’s entire braking system. It is
still your responsibility to drive and
corner at reasonable speeds and to
leave a sufficient margin of safety. If the indicator does not come on
when the ignition switch is turned to
the ON (II) position, there may be a
problem with the VSA system. Have
your dealer inspect your vehicle as
soon as possible (see page ).
When the VSA system indicator
comes on, you will also see a
‘‘CHECK VSA SYSTEM’’ message
on the multi-information display.
Without VSA, your vehicle still has
normal braking and cornering ability,
but it does not have VSA traction and
stability enhancement.
The main f unction of the
VSA system is generally known as
Electronic Stability Control (ESC).
The system also includes a traction
control f unction. 65
65
VSA A ctivation Indicator
VSA System Indicator
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
Driving
435
NOTE:
2009 RL

If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
Driving with varying tire or wheel
sizes may cause the VSA to
malf unction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page ).
VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.
When VSA is off, the VSA activation
indicator comes on as a reminder.
Press and hold the switch again. It
turns the system back on.
This switch is at the right side of the
lef t vent. Press and hold it until you
hear a beep.
Immediately af ter f reeing your
vehicle, be sure to switch the VSA on
again. We do not recommend driving
your vehicle with the VSA and
traction control systems switched off.
In certain unusual conditions when
your vehicle gets stuck in shallow
mud or f resh snow, it may be easier
to free it with the VSA temporarily
switched of f . When the VSA system
is of f , the traction control system is
alsooff.Youshouldonlyattemptto
f ree your vehicle with the VSA of f if
you are not able to f ree it when the
VSA is on.
If the low tire pressure/TPMS
indicator comes on (see page ),
or the multi-information display
shows a ‘‘CHECK TPMS SYSTEM’’
message with the indicator flashing
(see page ), the VSA system
automatically turns on even if the
VSA system is turned off with the
VSA OFF switch. In this case, you
cannot turn the VSA system of f by
pressing the VSA OFF switch again. 429
433
485
VSA and Tire Sizes
VSA OFF Switch
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
436
VSA OFF SWITCH
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