2004 Acura RL service

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UseaSAE90orSAE80W-90
viscosity hypoid gear oil, API service
classif ied GL4 or GL5 only, in the
dif f erential.
The dif f erential oil should be drained
and ref illed with new oil according to
the time and distance recommenda-
tions in the maintenance schedule. Viscosity
If it is not, slowly add oil until it
starts to run out of the hole. Reinstall
the f iller plug and tighten it securely.
Insert the dipstick back in the
transmission. Make sure the notch
f its in the dipstick guide and the
dipstick is down all the way.
The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule.
Check the oil in the dif f erential with
the vehicle sitting level. Remove the
oil f iller plug and check that the oil
levelisuptotheedgeof thehole.
6.
Maint enance
Dif f erential Oil
Automatic Transmission Fluid, Dif f erential Oil
265
DRAIN PLUGFILLER PLUG
Correct
level
SAE 90: above 0°F ( 18°C)
SAE 80W-90: below 0°F ( 18°C)

The air cleaner element should be
cleaned or replaced according to the
time and distance recommendations
in the maintenance schedule.
Clean the air cleaner element by
blowing compressed air through it in
the opposite direction to normal air
f low. If you do not have access to
compressed air (such as a service
station), ask your Acura dealer to do
this service.
Follow the replacement procedure
for removal and reinstallation.
Always use Honda Power Steering
Fluid. If it is not available, you may
use another power steering f luid as
an emergency replacement.
However, continued use can cause
increased wear and poor steering in
cold weather. Have the power
steering system f lushed and ref illed
with Honda PSF as soon as possible.
A low power steering f luid level can
indicate a leak in the system. Check
the f luid level f requently, and have
the system inspected as soon as
possible.
Clean the hood latch assembly with a
mild cleaner, then lubricate it with a
multipurpose grease. Lubricate all
the moving parts (as shown),
including the pivot. Follow the time
and distance recommendations in
the Maintenance Schedule. If you
are not sure how to clean and grease
the latch, contact your Acura dealer.
CONT INUED
A ir Cleaner Element
Hood L atch
Maint enance
Power Steering, Hood L atch, A ir Cleaner Element
Cleaning (Severe Condit ions)
267
PIVOTS
LATCH
ASSEMBLY
T urning the steering wheel to f ull lef t
or right lock and holding it there can
damage the power steering pump.

Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them. Your car’s air conditioning is a sealed
system. Any major maintenance,
such as recharging, should be done
by a qualif ied mechanic. You can do
a couple of things to make sure the
air conditioning works ef f iciently. 338
A ir Condit ioning Syst em
Maint enance277
AIR CONDITIONING CONDENSER
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.

Put on the spare tire. Put the
wheel nuts back on f inger-tight,
then tighten them in a crisscross
pattern with the wheel wrench
until the wheel is f irmly against
the hub. Do not try to tighten
them f ully.Tighten the wheel nuts securely in
the same crisscross pattern. Have
the wheel nut torque checked at
the nearest automotive service
f acility.
Tighten the wheel nuts to:
Lower the vehicle to the ground
and remove the jack.
12.
13.14.
T aking Care of t he Unexpect ed
Changing a Flat T ire
312
80 lbf·ft (108 N·m , 11 kgf·m)

By eliminating as much of the
electrical load as possible, you can
drive several miles (kilometers)
before the battery is too discharged
to keep the engine running. Drive to
a service station or garage where
you can get technical assistance.
Immediately turn of f all electrical
accessories: radio, climate control,
rear def ogger, cruise control, etc.
Try not to use other electrically-
operated controls such as the power
windows. Keep the engine running
and take extra care not to stall it.
Starting the engine will discharge
the battery rapidly.
This indicator should come on when
the ignition switch is ON (II), and go
out af ter the engine starts. If it
comes on brightly when the engine
is running, it indicates that the
charging system has stopped
charging the battery.
Charging System Indicator
T aking Care of t he Unexpect ed322
CHARGING SYSTEM INDICATOR

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The Brake System Indicator
normallycomesonwhenyouturn
the ignition switch ON (II). It is a
reminder to check the parking brake.
It comes on and stays lit if you do not
f ully release the parking brake. If it comes on at any other time, it
indicates a problem with the vehicle’s
brake system. In most cases, the
problem is a low f luid level in the
brake f luid reservoir. Press lightly on
the brake pedal to see if it f eels
normal. If it does, check the brake
f luid level the next time you stop at a
service station (see page ). If the
f luid level is low, take the vehicle to
your dealer and have the brake
system inspected f or leaks or worn
brake pads.
However, if the brake pedal does not
f eel normal, you should take
immediate action. Because of the
brake system’s dual-circuit design, a
problem in one part of the system
will still give you braking at two
wheels. You will f eel the brake pedal
go down much f arther bef ore the
vehicle begins to slow down, and you
will have to press harder on the
pedal. The distance needed to stop
will be much longer.Slow down by shif ting to a lower
gear, and pull to the side of the road
when it is saf e. Because of the
longer distance needed to stop, it is
hazardous to drive the vehicle. You
should have it towed, and repaired as
soon as possible. (See
on page .)
If you must drive the vehicle a short
distance in this condition, drive
slowly and cautiously.
If the ABS indicator and the VSA
system indicator come on with this
indicator, have the vehicle inspected
by your dealer immediately.
266
332
Brake System Indicator
T aking Care of t he Unexpect ed
Emergency
Towing
325
BRAKE SYSTEM INDICATOR
U.S. indicator shown

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There are three popular types of
prof essional towing equipment. If your car needs to be towed, call a
prof essional towing service or, if you
belong to one, an organization that
provides roadside assistance. Never
tow your car behind another vehicle
with just a rope or chain. It is very
dangerous. The operator
loads your car on the back of a truck.
The tow
truck uses two pivoting arms that go
under the tires (f ront or rear) and lif t
them of f the ground. The other two
tires remain on the ground. If your Acura cannot be transported
by f lat-bed, it should be towed by
wheel-lif t equipment with the f ront
wheels of f the ground. If , due to
damage, your car must be towed
with the f ront wheels on the ground,
do the f ollowing.
Release the parking brake.
Shif t the transmission to Neutral. With the f ront wheels on the ground,
it is best to tow the vehicle no farther
than 50 miles (80 km), and keep the
speedbelow35mph(55km/h).
The tow
truck uses metal cables with hooks
on the ends. These hooks go around
parts of the f rame or suspension and
the cables lif t that end of the vehicle
of f the ground. Your car’s sus-
pension and body can be seriously
damaged.Flat -bed Equipment
Wheel-lif t Equipment Sling-t ype Equipment
This is the best way to transport
your A cura.
T his is
an acceptable way to tow your
Acura. T his method of towing
is unacceptable.
Emergency T owing
T aking Care of t he Unexpect ed332
Improper towing preparation will
damage the transmission. Follow the
above procedure exactly. If you cannot
shif t the transmission or start the
engine, your car must be transported
with the f ront wheels of f the ground.

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The treadwear grade is a compara-
tive rating based on the wear rate of
the tire when tested under controlled
conditions on a specif ied government
test course. For example, a tire
graded 150 would wear one and one-
half (1 1/2) times as well on the
government course as a tire graded
100. The relative perf ormance of
tires depends upon the actual condi-
tions of their use, however, and may
depart signif icantly f rom the norm
due to variations in driving habits,
service practices and dif f erences in
road characteristics and climate.
The tires on your car meet all U.S.
Federal Saf ety Requirements. All
tires are also graded for treadwear,
traction, and temperature perform-
ance according to Department of
Transportation (DOT) standards.
The f ollowing explains these
gradings.
Quality grades can be f ound where
applicable on the tire sidewall
between the tread shoulder and the
maximum section width. For
example:
The traction grades, f rom highest to
lowest, are AA, A, B, and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured
under controlled conditions on
specif ied government test surf aces
of asphalt and concrete. A tire
marked C may have poor traction
perf ormance.
Warning: The traction grade
assignedtothistireisbasedon
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.
All passenger vehicle tires must
conf orm to Federal Saf ety
Requirements in addition to these
grades. T readwear
Unif orm T ire Quality Grading T readwear 200
Traction AA
Temperature A Traction AA, A, B, C
DOT T ire Quality Grading (U.S. Cars)
T echnical Inf ormation340