engine Acura RL 2008 Service Manual

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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Make sure all windows, mirrors,
and outside lights are clean and
unobstructed. Remove f rost, snow,
or ice.
Check that the hood is f ully closed.
Check that any items you may be
carrying are stored properly or
f astened down securely.Check the seat adjustment (see
page ).
Check the steering wheel
adjustment (see page ).
Make sure the doors and the
trunk are securely closed and
locked.
Fasten your seat belt. Check that
your passengers have f astened
their seat belts (see page ).
Youshoulddothefollowingchecks
and adjustments bef ore you drive
your vehicle.
When you start the engine, check
the gauges and indicators in the
instrument panel, and the
messages on the multi-inf ormation
display (see pages , and).
Visually check the tires. If a tire
looks low, use a gauge to check its
pressure (see page ).
Check the adjustment of the
inside and outside mirrors (see
page ).
1.
2.
3.
4. 5.
6.
7.
8.
9.
10. 17
78 155
147
61 70
159
420
Preparing to Drive
346
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If theenginedoesnotstartwithin
15 seconds, or starts but stalls
right away, repeat step 4 with the
accelerator pedal pressed halfway
down. If the engine starts, release
pressure on the accelerator pedal
so the engine does not race.
If the engine fails to start, press
the accelerator pedal all the way
down, and hold it there while
starting to clear flooding. If the
engine still does not start, return
to step 5.
Apply the parking brake.
In cold weather, turn of f all
electrical accessories to reduce
the drain on the battery.
Make sure the shif t lever is in
Park. Press on the brake pedal.
Your vehicle’s starting system has an
auto control mode. When you turn
the ignition switch to the START
(III) position, this f eature keeps the
engine’s starter motor running until
the engine starts. Follow these
instructions to start the engine:
Without touching the accelerator
pedal, turn the ignition switch to
the START (III) position, then
release the ignition switch. You do
not need to hold the ignition
switch in the START (III) position
to start the engine. Depending on
the outside temperature, the
starter motor runs f or about 6 to 9 seconds until the engine starts.
If you hold the ignition switch in
the START (III) position f or more
than 7 seconds, the starter motor,
depending on the outside
temperature, runs f or about 10 to
25 seconds until the engine starts.
If the engine does not start, wait at
least 10 seconds bef ore trying
again.
1.
2.
3.
4. 5.
6.
150
Starting the Engine
Driving
347
The engine is harder to start in cold
weather. Also, the thinner air f ound at
altitudes above 8,000 f eet (2,400
meters) adds to this problem.
T he immobilizer system protects your
vehicle f rom thef t. If an improperly-
coded key (or other device) is used, the
engine’s f uel system is disabled. For
more inf ormation, see page .
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If there is a problem with the
starting system, you will see a
‘‘CHECK STARTING SYSTEM’’
message on the multi-inf ormation
display when the ignition switch is
turned to the ON (II) position. You
will also see this message when the
auto control mode of the starting
system has a problem.If this message is on, the ignition
switchhastobeheldinthe
START (III) position manually
until the engine starts. The
ignitionswitchcanbeheldinthat
position up to 15 seconds.
Even though you may be able to
start the engine manually without
the auto control mode of the starting
system, have your dealer inspect
your vehicle.
Starting the Engine
Check Starting System Message
348
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µµµ µ
µ
µ
Do this:
Press the brake pedal, then
move the shift lever.
Move the lever.
To shift from:
PtoR
RtoN
NtoD
DtoD
DtoD DtoNNtoR RtoP
3
3
To avoid transmission damage, come
to a complete stop bef ore shif ting
into Park. The shif t lever must be in
Park bef ore you can turn the ignition
switch to the LOCK (0) position, or
remove the built-in key from the
ignition switch. Press the brake
pedal to shif t f rom Park to reverse.
To shif t f rom neutral to reverse,
come to a complete stop and then
shif t.
Your vehicle has a reverse lockout so
you cannot accidentally shif t to
reverse f rom neutral or any other
driving position when the vehicle
speed exceeds 5 6 mph (8 10
km/h).
If you cannot shif t to reverse when
the vehicle is stopped, press the
brake pedal, slowly shif t to neutral,
andthenshifttoreverse. If there is a problem in the reverse
lockout system, or your vehicle’s
battery is disconnected or goes dead,
you cannot shif t to reverse. (Ref er to
on page ).
Use neutral if you
need to restart a stalled engine, or if
it is necessary to stop brief ly with
the engine idling. Shif t to the Park
position if you need to leave your
vehicle for any reason. Press on the
brake pedal when you are moving
the shift lever from neutral to
another gear.
Use this position f or
your normal driving. The
transmission automatically selects a
suitable gear (1 through 5) f or your
speed and acceleration. You may
notice the transmission shif ting up at
higher engine speeds when the
engine is cold. This helps the engine
warm up f aster.
If you have done all of the above and
still cannot move the lever out of
Park, see on
page . This position mechani-
cally locks the transmission. Use
Park whenever you are turning of f or
starting the engine. To shif t out of
Park, you must press on the brake
pedal and have your f oot of f the
accelerator pedal. Move the shif t
levertotherighttoshiftoutof Park.
354 354
Automatic Transmission
Reverse (R)
Shif t L ock Release
Neutral (N)
Drive (D)
Shif t L ock Release
Park (P)
350
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à
à
à
à
The transmission may automatically
downshif t f rom the higher gear to
the lower gear under these
conditions:
Driving on level roads and downhill
Driving uphill
Downshif ting gives you more power
when climbing, and provides engine
brakingwhengoingdownasteephill.
Thegearindicatorwillflashthe
numberof thelowergearseveral
times, then return to the higher gear.
To shift from
43
54
To shift from 43
54 Speed range
under 17 mph
(27 km/h)
under 38 mph
(60 km/h)
When you accelerate away f rom a
stop, the transmission starts in f irst
gear. You have to manually upshif t
between first and fifth gears. Make
sure you upshif t bef ore the engine
speed reaches the tachometer’s red
zone.
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 is under
8mph(13km/h).
If you try to manually downshif t at a
speed that would cause the engine to
exceed the redline in a lower gear,
the transmission does not downshif t.
If the vehicle speed slows to below
the redline of the selected lower gear
position while the indicator is
f lashing, the transmission
downshif ts, and the display shows
the selected lower gear.
Speed range
under 41 mph
(65 km/h)
under 47 mph
(75 km/h)
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.
Automatic Transmission
352
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µIf you exceed the maximum speed
f or the gear you are in, the engine
speed will enter into the tachometer’s
red zone. If this occurs, you may f eel
the engine cut in and out. This is
caused by a limiter in the engine’s
computer controls. The engine will
run normally when you reduce the
rpm below the red zone. Make sure the ignition switch is in
the LOCK (0) position.
Set the parking brake.
Bef ore downshif ting, make sure the
engine will not go into the
tachometer’s red zone. This allows you to move the shif t
lever out of Park if the normal
method of pushing on the brake
pedal does not work.
This position is
similar to D, except only the f irst
three gears are selected. Use D
when towing a trailer in hilly terrain,
or to provide engine braking when
going down a steep hill. D can also
keep the transmission f rom cycling
between third, f ourth, and f if th gears
in stop-and-go driving.
ForfasteraccelerationwheninD or
D, you can get the transmission to
automatically downshif t by pushing
the accelerator pedal to the floor.
The transmission will shif t down one,
two, or three gears, depending on
your speed. To release the reverse lockout, make
sure the ignition switch is in the
ACCESSORY(I) position.
1.
2.
3
3
3
Engine Speed Limiter Shift Lock Release
Drive (D )
Automatic Transmission
3
354
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If you need to use the shif t lock
release, it means your vehicle is
developing a problem. Have the
vehicle checked by a dealer.
Put a cloth on the edge of the shif t
lock release slot cover next to the
shif t lever. Use a small f lat-tipped
screwdriver or a metal f ingernail
f ile to remove the cover. Caref ully
pry on the edge of the cover. Insert a built-in key into the shif t
lock release slot.
Push down on the built-in key, and
move the shift lever out of Park to
neutral.Remove the built-in key from the
shif t lock release slot, then
reinstall the cover. Make sure the
notchonthecoverisonthedriver’s
side. Press the brake pedal, and
restart the engine.
To release the reverse lockout,
move the shift lever from neutral
to reverse, then to Park.
3. 4.
5.6.
Automatic Transmission
Driving
355
SHIFT LOCK RELEASE SLOT
COVER
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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.
The SH-AWD torque distribution
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. When cruise control is on while
driving, the torque distribution
monitor is not shown.
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.
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.
SH-AWD T orque Distribution
Monitor
Super Handling-A ll Wheel Drive (SH-A WD) System
356
TORQUE INDICATOR
TORQUE INDICATOR
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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.
24
359
Braking System
Braking System Design
Brake Pad Wear Indicators
358
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