2009 Acura RL engine

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µ Each time you pull (right), the
transmission shifts to a higher gear.
Pull (lef t) to downshif t. You will
see the selected gear number on the
instrument panel.
To shif t up or down, use the
(right) or (lef t) paddle shif ter on
each side of the steering wheel.
When you are driving in D position,
pulling either paddle shif ter switches
fromtheordinaryautomatic
transmission [drive mode (D)] to the
D-paddle shif t mode. You can shif t
the transmission up or down
manually with the paddle shif ters.
Downshif ting gives you more power
when climbing, and provides engine
braking when going down a steep hill.
When you pull either paddle shif ter,
the gear position indicator shows you
the selected gear number.
CONT INUED
Using the Paddle Shif ters in D
position (D-Paddle Shif t Mode)
Driving with the Paddle Shif ters
Driving
409
GEAR POSITION INDICATOR
PADDLE SHIFTERS
2009 RL

The transmission control system
monitors the accelerator pedal use
and your driving conditions. When
you press the accelerator pedal as in
normal driving, the system judges
that you are driving at a constant
cruising speed without using the
paddle shif ters. Under these
conditions, D-paddle shif t mode is
canceled, and the transmission
automatically returns to drive mode
(D).If there is a problem in the
transmission while you are driving
with the paddle shifters, the D
indicator f lashes, the D-paddle shif t
mode is canceled, and the
transmission returns to drive mode
(D).
Each time you pull either paddle
shif ter, the transmission shif ts one
gear up or down. If you want to shif t
up or down more than two gears, pull
the paddle shif ter twice, pause, and
then pull it again.
The transmission remains in the
selected gear if you do not accelerate.
When the transmission returns to
drive mode (D), the displayed gear
number disappears. 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. The transmission downshif ts to f irst
gear and returns to drive mode (D)
when the vehicle comes to a
complete stop and the vehicle speed
is about 9 mph (15 km/h).
You upshif t bef ore the engine
speed rises above the lower limit
of the higher gear.
You pull both paddle shif ters at
thesametime.
You pull one of the two paddle
shifters with another paddle
shif ter being pressed.
Driving with the Paddle Shif ters
410
2009 RL

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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

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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