check engine Acura RDX 2008 User Guide

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Turn the engine of f , and conf irm the
f uel f ill cap is installed. If it is, loosen
it, then retighten it until it clicks at
least once. When you can restart the
engine, the message appears again.
The message goes of f af ter several
days of normal driving once you
tighten or replace the fuel fill cap. To
scroll to another message, press the
INFO ( / ) button.
If the system still detects a leak in
your vehicle’s evaporative emissions
system, the malf unction indicator
lamp (MIL) comes on. If the f uel f ill
cap was not already tightened, turn
the engine of f , and check or
retighten the f uel f ill cap until it
clicks at least once. The MIL should
go off after several days of normal
driving once the cap is tightened or
replaced. If the MIL does not go of f ,
have your vehicle inspected by a
dealer. For more inf ormation, see
page . Park the vehicle, and set the
parking brake. Pull the hood
release handle located under the
lower lef t corner of the dashboard.
The hood will pop up slightly.
Put your f ingers under the f ront
edge of the hood near the center.
Slide your hand to the lef t until
you f eel the hood latch handle.
Push this handle up to release it.
Lif t up the hood.
If the hood latch handle moves stif f ly,
or if you can open the hood without
lifting the handle, the mechanism
should be cleaned and lubricated.
1. 2.
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CONT INUED
Opening and Closing the Hood
Bef ore Driving
275
HOOD RELEASE HANDLE
LATCH
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Service Station Procedures
2008 RDX

Holding the grip, pull the support
rod out of its clip. Insert the end
into the designated hole in the
hood.To close the hood, lif t it up slightly to
remove the support rod f rom the
hole. Put the support rod back into
its holding clip. Lower the hood to
about a f oot (30 cm) above the
f ender, then let it drop. Make sure it
is securely latched.
Wait a f ew minutes af ter turning the
engine of f bef ore you check the oil.
Park the vehicle on a level surf ace.Hold the dipstick with a clean
cloth or paper towel, and then
insert it all the way back in its hole.
Wipe of f the dipstick with a clean
cloth or paper towel.
Remove the dipstick (orange loop).
3.
3.
1.
2.
Service Station Procedures
Oil Check
276
GRIPCLIP
SUPPORT ROD DIPSTICK
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Make sure the ‘‘UP’’ mark on the
loop is f acing up when you insert
the dipstick.
Remove the dipstick again, and
check the level. It should be
between the upper and lower
marks.
If it is near or below the lower mark,
see on page . Look at the coolant level in the
radiator reserve tank. Make sure it is
between the MAX and MIN lines. If
it is below the MIN line, see
on page f or
inf ormation on adding the proper
coolant. Refer to
on page f or inf ormation
about checking other items on your
vehicle.
4. 336 340333
Service Station Procedures
A dding Engine Oil
A dding
Engine Coolant
Engine Coolant Check Owner’s Maintenance
Checks
Bef ore Driving
277
UPPER MARK
LOWER MARK
‘‘UP’’MARK
RESERVE TANK
MAX MIN
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2008 RDX

µµ
µ µ
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Aggressive driving (hard
acceleration and braking)
Excessive idling, accelerating and
braking in stop-and-go traf f ic
Cold engine operation (engines
aremoreefficientwhenwarmed
up)
Driving with a heavy load or the
air conditioner running
Improperly inf lated tires
The f ollowing f actors can lower your
vehicle’s f uel economy:
A properly maintained vehicle
maximizes f uel economy. Poor
maintenance can signif icantly reduce
f uel economy. Always maintain your
vehicle according to the maintenance
messages displayed on the
inf ormation display (see
on page ).
For example: Rapid
acceleration, abrupt cornering,
and hard braking increase fuel
consumption.
Aerodynamic drag has a big ef f ect
on f uel mileage at speeds above 45
mph (75 km/h). Reduce your
speed and you reduce the drag.
Trailers, car top carriers, roof
racks and bike racks are also big
contributors to increased drag.
If your vehicle has a
manual transmission, you can
boost your f uel economy by up
shif ting as early as possible.
Idling
results in 0 miles per gallon.
‘‘rolling resistance,’’ which reduces
f uel economy.
It puts a heavier
load on the engine, increasing f uel
consumption.
In
particular, a build-up of snow or
mud on your vehicle’s underside
adds weight and rolling resistance.
Frequent cleaning helps your f uel
economy.
333
CONT INUED
Fuel Economy
Fuel Economy Factors
Improving Fuel Economy
Owner’s
Maintenance Checks Drive moderately
Observe the speed limit
Always drive in the highest gear
possible
Avoid excessive idling
Use the required engine oil (see
page).
Maintain proper tire inf lation
A void carrying excess weight in
your vehicle
K eep your vehicle clean
336
Vehicle Maint enance Drive Ef f icient ly
Bef ore Driving
279
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An underinf lated tire increases
2008 RDX

µµ
Fill the f uel tank until the nozzle automatically clicks of f .
Reset trip counter to zero.
Record the total gallons (liters) needed to ref ill.
Follow one of the simple calculations above.
The A/C
puts an extra load on the engine
which makes it use more f uel. Use
the f resh-air ventilation when
possible.
Combine several short trips into
one. A warmed-up engine is more
f uel ef f icient than a cold one.
Direct calculation is the
recommended source of inf ormation
about your actual f uel economy.
Using f requency of f ill-ups or taking
f uel gauge readings are NOT
accurate measures of f uel economy.
Fuel economy may improve over the
f irst several thousand miles. 1)
2)
3)
4)
Fuel Economy
Checking Your Fuel Economy
Measuring T echniquesMinimize the use of the air
conditioning system
Plan and combine trips
Calculating Fuel Economy
280
Miles per Gallon
100 Kilometers
Gallons
of fuel
Miles
driven
Liter Lper
100 km
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2008 RDX

Check the seat adjustment (see
page ).
Check the adjustment of the
inside and outside mirrors (see
page ).
Check the steering wheel
adjustment (see page ).
Fasten your seat belt. Check that
your passengers have f astened
their seat belts (see page ). Make sure the doors and the
tailgate are securely closed and
locked.
Youshoulddothesechecksand
adjustments bef ore you drive your
vehicle:
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. Visually check the tires. If a tire
looks low, use a gauge to check its
pressure. 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
).
1.
2.
3.
4. 5.
6.
7.
8.
9.
10.
135
119
14
144
61 71
77
Preparing to Drive
Driving
291
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2008 RDX

This allows you to move the shif t
lever out of Park if the normal
method of pushing on the brake
pedal and pressing the release
button does not work.Set the parking brake.
Remove the key from the ignition
switch.
Push down on the key while you
pressthereleasebuttononthe
shif t lever and move the shif t lever
out of Park to neutral.
Insert the key in the shift lock
release slot.
Putaclothonthenotchof the
shif t lock release slot cover. Using
a small f lat-tipped screwdriver or a
metal f ingernail f ile, caref ully pry
on the notch of the cover to
remove it. Remove the key from the shift
lock release slot, then install the
cover. Make sure the notch on the
cover is on the rear.
Return the key to the ignition
switch, press the brake pedal, and
restart the engine.
If you need to use the shif t lock
release, it means your vehicle is
developing a problem. Have it
checked by your dealer.
1.
2.
3.
4.
5.6.
Shif t L ock Release
Automatic Transmission
296
COVER
RELEASE
BUTTON
NOTCH
SHIFT LOCK
RELEASE SLOTKEY
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2008 RDX

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
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2008 RDX

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 the electric vacuum pump is in
operation, it makes some mechanical
noises come f rom the engine
compartment. This is normal.
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.
384
Braking System
Brake Pad Wear Indicators
Braking System Design
304
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2008 RDX

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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2008 RDX