engine Acura RDX 2009 Service Manual

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.
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.
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.
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
302
TM
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Your vehicle is equipped with disc
brakes at all f our wheels. A power
assist using negative pressure
generated by the engine and the
electric vacuum pump helps reduce
the ef f ort needed on the brake pedal.
The anti-lock brake system (ABS)
helps you retain steering control
when braking very hard.All f our brakes have audible brake
wear indicators.
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.
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.
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.
When you drive in cold weather or
thinner air at high altitude, the
electric vacuum pump operates more
f requently af ter the engine is started.
For more inf ormation about the
electric vacuum pump, see page . 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 your brakes af ter 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 and alert in your driving.
When the electric vacuum pump is in
operation, it makes some mechanical
noises come f rom the engine
compartment. This is normal.
384
Braking System
Brake Pad Wear Indicators
Braking System Design
304
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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
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
inf ormation display along with a
‘‘CHECK TIRE PRESSURE’’
message.Becausetirepressurevariesby
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly.
Driving on a signif icantly under-
inf lated tire causes the tire to
overheat and can lead to tire failure.
Under-inf lation also reduces f uel
efficiency and tire tread life, and may
af f ect the vehicle’s handling and
stopping ability.
If the tire is f lat, or if the tire
pressure is too low to continue
driving, replace the tire with the
compact spare tire (see page ).
If you think you can saf ely drive a
short distance to a service station,
proceed slowly to the station, then
inflate the tire to the recommended
pressure.
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is signif icantly underinf lated.
Youshouldstopandcheckyourtires
as soon as possible, and inflate them
to the proper pressure as indicated
on the vehicle’s tire inf ormation
placard.
It is possible that the pressures
shown on the multi-inf ormation
display and the pressures you
manually measure are slightly
dif f erent.
If the dif f erence is signif icant or you
cannot make the low tire pressure/
TPMS indicator and message on the
multi-inf ormation display go out af ter
inf lating the tires to the specif ied
values, have your dealer check the
system as soon as possible. 370
CONT INUED
Tire Pressure Monitoring System (TPMS)
Low Tire Pressure/
TPMS Indicator
Driving
307
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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.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.
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.
You will also see a ‘‘CHECK VSA
SYSTEM’’ message on the multi-
inf ormation display if there is a
problem with the VSA system.
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. 67
307
310
VSA A ctivation Indicator
Vehicle Stability Assist
(VSA ) System Indicator
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
312
NOTE:
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This switch is under the driver’s side
vent. To turn the VSA system on and
of f , press and hold it until you hear a
beep.
When VSA is off, the VSA activation
indicator comes on as a reminder.
VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.Driving with varying tire or wheel
sizes may cause the VSA to
malf unction. When replacing tires,
make sure they are 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.
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.
Without VSA, your vehicle will have
normal braking and cornering ability,
but it will not have VSA traction and
stability enhancement. 364
VSA and Tire Sizes
VSA Of f Switch
Vehicle Stability A ssist (VSA), aka Electronic Stability Control (ESC), System
Driving
313
VSA OFF SWITCH
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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.
Be sure to read thesectiononpage
if you plan to tow of f paved
surf aces.
The
maximum allowable weight of the
trailer and everything in or on it
must not exceed 1,500 lbs (680 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. Theweightthatthe
tongue of a f ully-loaded trailer puts
on the hitch should be approximately
10% of the total trailer weight. Too
much tongue load reduces f ront-tire
traction and steering control. Too
little tongue load can make the
trailer unstable and cause it to sway.
321
Off-Highway
Driving Guidelines Load Limits
T otal T railer Weight: T ongue L oad:
Towing a Trailer
314
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.
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When driving down hills, reduce
your speed, and shif t down to S
position, or use the paddle shif ters to
the lower gear (3, 2 or 1) in the S
position. When towing a trailer, do
not ‘‘ride’’ the brakes, and remember,
it will take longer to slow down and
stop when towing a trailer.
Drive slower than normal in all
driving situations, and obey posted
speed limits f or vehicles with trailers.
Use the D position when towing a
trailer on level roads. See ‘‘
’’ in the next column f or
additional gear inf ormation. Do not
exceed 55 mph (88 km/h). At higher
speeds, the trailer may sway or
af f ect vehicle handling.
Maketurnsmoreslowlyandwider
than normal. The trailer tracks a
smaller arc than your vehicle, and it
canhitorrunoversomethingthe
vehicle misses. Allow more time and
distance f or braking. Do not brake or
turn suddenly as this could cause the
trailer to jackknif e or turn over.
The added weight, length, and
height of a trailer will af f ect your
vehicle’s handling and perf ormance,
so driving with a trailer requires
some special driving skills and
techniques.
Foryoursafetyandthesafetyof
others,taketimetopracticedriving
maneuvers bef ore heading f or the
open road, and f ollow the guidelines
in this section.
When climbing hills, closely watch
your temperature gauge (see page
). If it nears the H (Hot) mark,
turn the A/C of f , reduce speed and,
if necessary, pull to the side of the
road to let the engine cool. 76
CONT INUED
Driving on Hills
T owing Speeds and Gears
Driving on
Hills
Making T urns and BrakingDriving Saf ely With a T railer
Towing a Trailer
Driving
319
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This section explains why it is
important to keep your vehicle well
maintained and how to f ollow basic
maintenance saf ety precautions.
This section also includes
instructions on how to read the
maintenance minder messages on
the multi-information display, and
instructions f or simple maintenance
tasks you may want to take care of
yourself .
If you have the skills and tools to
perf orm more complex maintenance
tasks on your vehicle, you may want
to purchase the service manual. See
page f or inf ormation on how to
obtain a copy, or see your dealer.......................
Maintenance Saf ety .326
....................
Maintenance Minder .327
..............................
Fluid Locations .335
........................
Adding Engine Oil .336
.................
Required Engine Oil .336
Changing the Engine Oil and ...........................................
Filter .338
..............................
Engine Coolant .340
....................
Windshield Washers .342
....
Automatic Transmission Fluid .343
....................................
Brake Fluid .345
....................
Power Steering Fluid .346
.............................................
Lights .347
................
Cleaning the Seat Belts .354
.....................................
Floor Mats .354
..............................
Audio Antenna .355
.....................................
Intercooler .355
..................
Dust and Pollen Filter .355
.................................
Wiper Blades .356
...........................................
Wheels .359
...............................................
Tires .360
...................
Checking the Battery .366
.............................
Vehicle Storage .368
413
Maintenance
Maint enance
325
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All service items not detailed in this
section should be perf ormed by a
certif ied technician or other qualif ied
mechanic.
To eliminate potential hazards, read
the instructions bef ore you begin,
and make sure you have the tools
and skills required.Make sure your vehicle is parked
on level ground, the parking brake
is set, and the engine is of f .
To clean parts, use a commercially
available degreaser or parts
cleaner, not gasoline.
To reduce the possibility of f ire or
explosion, keep cigarettes, sparks,
and flames away from the battery
and all f uel-related parts.
Wear eye protection and
protective clothing when working
with the battery or compressed air. Do
not run the engine unless
instructed to do so.
Some of the most important saf ety
precautions are given here. However,
we cannot warn you of every
conceivable hazard that can arise in
perf orming maintenance. Only you
can decide whether or not you
should perf orm a given task.
Be sure there is
adequate ventilation whenever you
operate the engine.
Let the
engine and exhaust system cool
down bef ore touching any parts.
Maintenance Saf ety
Important Saf ety Precautions Injury f rom moving parts.
Potential Vehicle Hazards Carbon Monoxide poison f rom
engine exhaust.
Burns f rom hot parts.
326
Failure to properly follow
maintenance instructions and
precautions can cause you to be
seriously hurt or killed.
Always follow the procedures and
precautions in this owner’s
manual.
Improperly maintaining this
vehicle, or failing to correct a
problem before driving can
cause a crash in which you can
be seriously hurt or killed.
Always follow the inspection
and maintenance
recommendations and
schedules in this owner’s
manual.
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One of the most convenient and
important f eatures of the multi-
inf ormation display on your vehicle
is the maintenance minder.
Based on engine operating
conditions and accumulated engine
revolutions, the onboard computer in
your vehicle calculates the remaining
engine oil lif e.
The system also displays the code
f or other scheduled maintenance
items needing service.
The remaining engine oil lif e is
shownonthedisplayaccordingto
this table:
To see the current engine oil lif e,
turn the ignition switch to the ON
(II) position, and push and release
the INFO ( / ) button on the
steering wheel repeatedly, until the
engine oil lif e is displayed (see page ).
73
Calculated Engine
Oil Lif e (%)
100 % 91 % 90 % 81 %
80 % 71 %
70 % 61 %
60 % 51 %
50 % 41 %
40 % 31 %
30 % 21 %
20 % 16 %
15 % 11 %10 % 6 % 5% 1% 0% Displayed
Engine Oil Lif e (%) 100 %90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
15 %
10 %5%
0%
CONT INUED
Engine Oil L if e
Maintenance Minder
Maint enance
327
INFO
BUTTONS
ENGINE OIL
LIFE DISPLAY SEL/RESET BUTTON
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