engine ACURA RL 2012 Workshop Manual

´ 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).The automatic transmission will not
allow you to shif t up or down if :
You downshif t bef ore the engine
speed reaches the highest
threshold of the lower gear.
If you try to do this, the gear
position indicator will f lash the
number of the lower gear several
times, then return to a higher gear.
You upshif t bef ore the engine
speed reaches the lowest
threshold 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. Each time you pull either paddle
shifter, the transmission shifts one
gear up or down.
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. Hold the paddle shifter for 2
seconds to return to drive mode (D).You can also shift down two gears at
a time if the selected gear is between
the second and sixth, and the engine
speed is within the appropriate range.
Pull the paddle shif ter twice to select
agear.
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.
Driving with the Paddle Shif ters
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´
µThe automatic transmission will not
allow you to shif t up or down if :
You downshif t bef ore the engine
speed reaches the highest
threshold of the lower gear.
If you try to do this, the gear
position indicator will f lash the
number of the lower gear several
times, then return to a higher gear.
If the vehicle speed decreases
below the redline of the selected
lowergearwhiletheindicatoris
f lashing, the transmission
downshif ts, and the indicator
displays the selected gear.
You upshif t bef ore the engine
speed reaches the lowest
threshold of the higher gear. 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
6mph(10km/h)orless. 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. When you are driving, 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.
The vehicle detects that you are
driving uphill or downhill. 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 shif ts f rom f irst to second
automatically. You must manually
upshif t between second and sixth
gears. Make sure you upshif t bef ore
the engine speed reaches the
tachometer’s red zone.
The transmission remains in the
selectedgear(6,5,4,3,or2).There
is no automatic downshif t when you
push the accelerator pedal to the
f loor.
Driving with the Paddle Shif ters
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´Drive in the highest gear that lets
the engine run and accelerate
smoothly. This will give you good
f uel economy and ef f ective
emissions control. The f ollowing
shif t points are recommended: 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. You pull both paddle shif ters at
thesametime.
You pull one of the two paddle
shifters with another paddle
shif ter being pressed.
Shif t up
1st to 2nd
2nd to 3rd
3rd to 4th
4th to 5th
5th to 6thNormal acceleration
15 mph (24 km/h)
25 mph (40 km/h)
40 mph (64 km/h)
45 mph (72 km/h)
50 mph (81 km/h)
Driving with the Paddle Shif ters
Recommended Shif t Point s St art ing in Second Gear
Driving
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µ
µ The super handling-all wheel drive
(SH-AWD) system is a f ull time all-
wheel-drive system that
automatically controls and transf ers
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.
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.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.
Super Handling-A ll Wheel Drive (SH-A WD)System
SH-AWD T orque Distribution
Monitor
412
TORQUE INDICATOR
TORQUE INDICATOR
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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 a
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
Driving
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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, 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
416Braking System Design
Brake Pad Wear Indicators
Braking System
Driving
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µ
If equipped
The collision mitigation braking
system (CMBS ) can assist the
driver when there is a possibility of
colliding with the vehicle in f ront of
yours. It is designed to reduce the
speed of your vehicle bef ore an
unavoidable collision occurs and, if
possible, to alert you to a potential
collision while there is time f or the
driver to prevent it. Here is a brief
description of what the CMBS can
do:When your speed is above 10 mph
(15 km/h), the CMBS is monitoring
the vehicle ahead of you with radar.
When your vehicle is approaching
the vehicle ahead of yours too
quickly, the system may activate one
or more of the f ollowing: a visual
alert, an audible alert, apply the
brakes and e-pretensioners to
tighten the front seat belts first as
a warning, then to prepare for an
impending crash (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 buttononthe
dashboard. 24
Collision Mitigation Braking System (CMBS )
Overview
418
RADAR SENSOR
BRAKE
ACTUATORSEAT BELT
e-PRETENSIONERS
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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.
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481
433
CONT INUED
Low Tire Pressure/
TPMS Indicator
Tire Pressure Monitoring System (TPMS)
Driving
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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.
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. 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 system indicator blink.When VSA is off, the VSA OFF
indicator comes on as a reminder.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.
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. When VSA activates, you will see the
VSA system indicator blink.
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.
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.429
433
Vehicle St abilit y A ssist (VSA), aka Electronic Stability Control (ESC), System
VSA OFF Indicator
Vehicle Stability Assist
(VSA ) System Indicator
Driving
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This switch is at the right side of the
lef t vent. To turn the VSA system on
and of f , press and hold it until you
hear a beep.VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.
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.
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. When VSA is off, the VSA OFF
indicator comes on as a reminder.
Press and hold the switch again. It
turns the system back on.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 ).
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.486
Vehicle St abilit y A ssist (VSA), aka Electronic Stability Control (ESC), System
VSA OFF Switch VSA and Tire Sizes
436
VSA OFF SWITCH
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