maintenance Acura MDX 2004 Owner's Guide

You may use a synthetic motor oil if
it meets the same requirements
given f or a conventional motor oil: it
displays the API Certif ication Seal
and it is the proper weight. You must
f ollow the oil and f ilter change
intervals given in the maintenance
schedule.
Your Acura does not require any oil
additives. Additives may adversely
af f ect your engine’s or transmission’s
perf ormance and durability.Open the hood and remove the
engine oil f ill cap. Remove the oil
drain bolt and washer f rom the
bottom of the engine. Drain the oil
into an appropriate container.
Always change the oil and f ilter
according to the recommendations in
the maintenance schedule. The oil
and f ilter collect contaminants that
can damage your engine if they are
not removed regularly.
Changing the oil and f ilter requires
special tools and access f rom
underneath the vehicle. The vehicle
should be raised on a service station-
type hydraulic lif t f or this service.
Unless you have the knowledge and
proper equipment, you should have
this maintenance done by a skilled
mechanic.
Run the engine until it reaches
normal operating temperature,
then shut it off.
1. 2.
A dding Engine Oil, Changing the Oil and Filter
Maint enance
Synthetic Oil
Engine Oil A dditivesChanging the Oil and Filter
206
WASHER
DRAIN BOLT

Check the f luid level with the engine
at normal operating temperature.Park the vehicle on level ground.
Shut of f the engine.
Remove the dipstick (yellow loop)
f rom the transmission, and wipe it
with a clean cloth.
Insert the dipstick all the way into
the transmission. Remove the dipstick and check
the f luid level. It should be
between the upper and lower
marks.
If the level is below the lower
mark, add f luid into the tube to
bring it to the upper mark.
Always use Honda ATF-Z1
(Automatic Transmission Fluid). If
it’s not available, you may use a
DEXRON
III automatic
transmission f luid as a temporary replacement. However, continued
use can af f ect the shif t quality.
Have the transmission flushed and
ref illed with Honda ATF-Z1 as
soon as it is convenient.
To thoroughly f lush the
transmission, the technician
should drain and ref ill it with
Honda ATF-Z1 (Automatic
Transmission Fluid), then drive
the vehicle f or a short distance.
Do this three times. Then drain
and ref ill the transmission a f inal
time.
The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule. Insert the dipstick all the way back
in the transmission.
If you are not sure how to add f luid,
contact your Acura dealer.
1.
2.
3.
5.
6.
4.
Automatic Transmission Fluid
Maint enance210
DIPSTICK DIPSTICK
LOWER MARK UPPER MARK

Check the f luid level with the
dif f erential at normal operating
temperature and the vehicle sitting
on level ground. Remove the
dif f erential f luid f iller bolt and
washer, and caref ully f eel inside the
bolt hole with your f inger. The f luid
level should be up to the edge of the
bolt hole. If it is not, slowly add
VTM-4 Dif f erential Fluid until it
starts to run out of the hole.Put a new washer on the f iller bolt,
then reinstall the f iller bolt. Tighten
it securely. Tightening torque:
Checkthefluidinthetransfer
assembly with the vehicle sitting on
level ground. Remove the f iller plug
and check that the f luid level is up to
the edge of the f iller plug hole.
The dif f erential should be drained
and ref illed with new f luid according
to the recommendations in the
maintenance schedule.
CONT INUED
Differential Fluid, Transfer Assembly Fluid
Maint enance
Dif f erential Fluid
Transf er Assembly Fluid
211
FILLER BOLT
CORRECT LEVEL FILLER PLUG
DRAIN PLUG
33 lbf·ft (45 N·m , 4.6 kgf·m)

µµ
If it is not, slowly add proper f luid
until it starts to run out of the hole.
Reinstall the f iller plug and tighten it
securely.
Tightening torque:
UseaSAE90orSAE80W-90
viscosity hypoid gear oil, API service
classif ied GL4 or GL5 only, in the
transf er assembly.
Viscosity
The transf er assembly f luid should
be drained and ref illed with new f luid
accordingtothetimeanddistance
recommendations in the
maintenance schedule. Check the f luid level in the brake
f luid reservoir monthly. Replace it
according to the maintenance
schedule recommendations.
Always use Honda Heavy Duty
Brake Fluid DOT 3. If it is not
available, you should use only DOT 3
or DOT 4 f luid, f rom a sealed
container, as a temporary
replacement. Using any non-Honda
brake fluid can cause corrosion and
decrease the lif e of the system. Have
the brake system f lushed and ref illed
with Honda Heavy Duty Brake Fluid
DOT 3 as soon as possible.
Brake f luid marked DOT 5 is not
compatible with your vehicle’s
braking system and can cause
extensive damage.
The f luid level should be between
theMINandMAXmarksontheside
of the reservoir. If the level is at or
below the MIN mark, your brake
system needs attention. Have the
brake system inspected f or leaks or
worn brake pads.
Tightening torque:
T ransf er A ssembly Fluid, Brake Fluid
Maint enance
Brake Fluid
212
MAX
MIN
33 lbf·ft (45 N·m , 4.6 kgf·m)SAE 90: above 0°F ( 18°C)
SAE 80W-90: below 0°F ( 18°C)

µµ
Always use Honda Power Steering
Fluid. You may use another power
steering f luid as an emergency
replacement, but 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.
The timing belt should be replaced
at the intervals shown in the
maintenance schedule.
Replace the belt at 60,000 miles
(100,000 km) if you regularly drive
your vehicle in one or more of these
conditions:
In very high temperatures
(over 110°F, 43°C).
In very low temperatures
(under 20°F, 29°C).
Frequently tow a trailer.
Check the level on the side of the
reservoir when the engine is cold.
The f luid should be between the
UPPER LEVEL and LOWER LEVEL.
If not add power steering f luid to the
UPPER LEVEL mark.
Power Steering Fluid, Timing Belt
Maint enance
Timing Belt
Power Steering Fluid
213
NOTICE:
UPPER LEVEL
LOWER
LEVEL
T urning the steering wheel to
f ull lef t or right lock and holding it
there can damage the power steering
pump.

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.Theheadlightswereproperlyaimed
when your vehicle was new. If you
regularly carry heavy items in the
cargo area or pull a trailer,
readjustment may be required.
Adjustment should be done by an
Acura dealer or other qualif ied
mechanic.
Your vehicle has halogen headlight
bulbs, two on each side. When
replacing a bulb, handle it by its base
and protect the glass from contact
with your skin or hard objects. If you
touch the glass, clean it with
denaturedalcoholandacleancloth.
Open the hood.
1.
Hood Latch, Lights
Maint enance
Hood L atch Replacing a Headlight Bulb
Headlight A iming
214
NOTICE:
LATCH ASSEMBLY
Halogen headlight bulbs get
very hot when lit. Oil, perspiration, or a
scratch on the glass can cause the bulb
to overheat and shatter.

To saf ely operate your vehicle, your
tires must be the proper type and
size, in good condition with adequate
tread, and correctly inf lated.
The f ollowing pages give more
detailed inf ormation on how to take
care of your tires and what to do
when they need to be replaced.Keeping the tires properly inf lated
provides the best combination of
handling, tread lif e, and riding
comf ort.
Underinf lated tires wear unevenly,
adversely affect handling and fuel
economy, and are more likely to f ail
f rom being overheated.
Overinf lated tires can make your
vehicleridemoreharshly,aremore
prone to damage from road hazards,
and wear unevenly.Use a gauge to measure the air
pressure at least once a month. Even
tires that are in good condition may
lose one to two psi (10 to 20 kPa, 0.1
to 0.2 kgf /cm ) per month.
Remember to check the spare tire at
thesametime.
Add or release air, if needed, to
match the recommended cold tire
pressures on page .
The Tire Pressure Monitoring
System (TPMS) will warn you when
a tire pressure is low. See page
f or inf ormation on the TPMS.
We recommend that you visually
check your tires every day. If you
think a tire might be low, check it
immediately with a tire gauge. Check the pressure in the tires when
they are cold. This means the vehicle
has been parked f or at least three
hours, or driven less than 1 mile (1.6
km).
177 222
CONT INUED
Tires
Maint enance
Inf lation
221
Using tires that are excessively
worn or improperly inflated can
cause a crash in which you can
be seriously hurt or killed.
Follow all instructions in this
owner’s manual regarding tire
inflation and maintenance.

Your vehicle’s tires have wear
indicators molded into the tread.
When the tread wears down to that
point, you will see a 1/2 inch (12.7
mm) wide band running across the
tread. This shows there is less than
1/16 inch (1.6 mm) of tread lef t on
the tire. A tire that is this worn gives
very little traction on wet roads. You
should replace the tire if you can see
the tread wear indicator in three or
more places around the tire.In addition to proper inf lation,
correct wheel alignment helps to
decrease tire wear. If you f ind a tire
is worn unevenly, have your dealer
check the wheel alignment.
To help increase tire lif e and
distribute wear more evenly, rotate
the tires every 7,500 miles (12,000
km). Move the tires to the positions
showninthecharteachtimethey
are rotated. If you purchase
directional tires, rotate only f ront-to-
back.
Have your dealer check the tires if
you f eel a consistent vibration while
driving. A tire should always be
rebalanced if it is removed f rom the
wheel. When you have new tires
installed, make sure they are
balanced. This increases riding
comf ort and tire lif e. For best results,
have the installer perform a dynamic
balance.
Tires
Maint enance
T ire Maintenance
T ire Rotation
223
NOTICE:
Front
(For Non-directional
Tires and Wheels) Front
(For Directional
Tires and Wheels)
TREAD WEAR INDICATORS INDICATOR LOCATION MARKS
Improper wheel weights can
damage your vehicle’s aluminum
wheels. Use only genuine Acura wheel
weights f or balancing.

µ
Check the condition of the battery
monthlybylookingatthetest
indicator window. The label on the
battery explains the test indicator’s
colors. Check the terminals f or corrosion (a
white or yellowish powder). To
remove it, cover the terminals with a
solution of baking soda and water. It
will bubble up and turn brown. When
this stops, wash it of f with plain
water. Dry off the battery with a
cloth or paper towel. Coat the
terminals with grease to help prevent
f urther corrosion.
If additional battery maintenance is
needed, see your Acura dealer or a
qualif ied technician.
Battery posts,
terminals, and related accessories
contain lead and lead compounds. If you need to connect the battery to
a charger, disconnect both cables to
prevent damaging your vehicle’s
electrical system. Always disconnect
the negative ( ) cable first, and
reconnect it last.
Checking the Battery
Maint enance
WARNING:
Wash your hands af ter handling.
226
TEST INDICATOR WINDOW
The battery gives off explosive
hydrogen gas during normal
operation.
A spark or flame can cause the
battery to explode with enough
force to kill or seriously hurt you.
Wear protective clothing and a
face shield, or have a skilled
mechanic do the battery
maintenance.

If you need to park your vehicle f or
an extended period (more than one
month), there are several things you
should do to prepare it f or storage.
Proper preparation helps prevent
deterioration and makes it easier to
get your vehicle back on the road. If
possible, store your vehicle indoors.Fill the f uel tank.
Change the engine oil and f ilter.
Wash and dry the exterior
completely.
Cleantheinterior.Makesurethe
carpeting, floor mats, etc., are
completely dry.
Leave the parking brake off. Put
the transmission in Park. Block the rear wheels.
If the vehicle is to be stored f or a
longer period, it should be
supported on jackstands so the
tires are of f the ground.
Leave one window open slightly (if
the vehicle is being stored
indoors).
Disconnect the battery.
Support the f ront and rear wiper
blade arms with a f olded towel or
ragsotheydonottouchthe
windshield.
To minimize sticking, apply a
silicone spray lubricant to all door
and tailgate seals. Also, apply a
vehiclebodywaxtothepainted
surfaces that mate with the door
and tailgate seals.Cover the vehicle with a
‘‘breathable’’ cover, one made
f rom a porous material such as
cotton. Non-porous materials, such
as plastic sheeting, trap moisture,
which can damage the paint.
If possible, periodically run the
engine until it reaches f ull
operating temperature (the
cooling f ans cycle on and of f
twice). Pref erably, do this once a
month.
If you store your vehicle f or 12
months or longer, have your Acura
dealer perf orm the inspections called
f or in the 24 months/30,000 miles
(48,000 km) maintenance schedule
(Normal Conditions) as soon as you
take it out of storage (see page ).
The replacements called f or in the
maintenance schedule are not
needed unless the vehicle has
actually reached that time or mileage. 199
Vehicle Storage
Maint enance227