engine Acura MDX 2004 Service Manual

All service items not detailed in this
sectionshouldbeperformedbyan
Acura 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 f lames away f rom the battery
and all f uel-related parts. Wear eye protection and
protective clothing when working
with the battery or compressed air.
Be sure there is
adequate ventilation whenever you
operate the engine.
Let the
engine and exhaust system cool bef ore touching any parts.
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.
Maintenance Saf ety
Maint enance
Important Saf ety Precautions Potential Vehicle HazardsCarbon Monoxide poison f rom
engine exhaust.
Burns f rom hot parts. Injury f rom moving parts.
196
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 in this owner’s
manual.

µµ
The maintenance schedule assumes
you will use your vehicle as normal
transportation for passengers and
their possessions. You should also
f ollow these recommendations:
Avoid exceeding your vehicle’s
load limit. This puts excess stress
on the engine, brakes, and many
other vehicle parts. The load limit
is shown on the tire inf ormation
label on the driver’s doorjamb.
Operate your vehicle on
reasonable roads within the legal
speed limit.
Drive your vehicle regularly over a
distance of several miles
(kilometers).
Always use unleaded gasoline with
theproperoctanerating(seepage ). Used primarily as a delivery
vehicle or taxi that is driven
mostly in stop-and-go traf f ic and/
or parked with the engine idling.
Follow the
Maintenance Schedule f or Severe
Conditions if you drive your vehicle
MAINLY under one or more of the
f ollowing conditions.
Driving less than 5 miles (8 km)
per trip or, in f reezing
temperatures, driving less than 10
miles (16 km) per trip.
Driving in extremely hot [over
90°F (32°C)] conditions.
Trailer towing, driving with a roof
rack, or driving in mountainous
conditions.
Driving on muddy, dusty, or de-
iced roads. If you only OCCASIONALLY
drive under a ‘‘severe’’ condition, you
should f ollow the Maintenance
Schedule f or Normal Conditions.
Follow the
Maintenance Schedule f or Severe
Conditions.
158
Maintenance Schedule
Maint enance
Which Schedule to Follow:
U.S. Owners Canadian Owners
197
NOTE:

̵
µµ
µ µµ
Your authorized Acura dealer knows
your vehicle best and can provide
competent, ef f icient service.
However, service at a dealer is not
mandatory to keep your warranties
in effect. Maintenance may be done
by any qualif ied service f acility or
skilled person to keep your
warranties in ef f ect. Keep all the
receipts as proof of completion, and
have the person who does the work
f ill out the Maintenance Record.
Check your warranty booklet f or
more inf ormation.
We recommend the use of Acura
parts and f luids whenever you have
maintenance done.
According to state and federal
regulations, f ailure to perf orm
maintenance on the items marked
with will not void your emissions
warranties. However, Acura
recommends that all maintenance
services be perf ormed at the
recommended time or mileage
period to ensure long-term reliability.
Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the appropriate
page listed. Engine oil level Check every
time you fill the fuel tank. See
page .
Engine coolant level Check the
radiator reserve tank every time
you f ill the f uel tank. See page .
Automatic transmission Check
the f luid level monthly. See page
.
Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page .
Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate light monthly. See
page .
U.S. Vehicles:
Brakes Check the f luid level
monthly. See page .161
162
210
222 212
214
Maintenance Schedule
Maint enance
Servicing Your Vehicle
Owner’s Maintenance ChecksMaintenance,
replacement, or repair of
emissions control devices and
systems may be done by any
automotive repair establishment
or individual using parts that are
‘‘certif ied’’ to EPA standards.
198

Î
ÎÌ
Ì
Ì
Î
Î Î
Maint enance199
Service the items listed at the indicated distance (or time, if given).
miles x 1,000
km x 1,000 Check oil and coolant at each fuel stop
Check inflation and condition once a month
Every 7,500 miles (12,000 km)
Every 3 years (independent of mileage)
At 120,000 miles (192,000 km) or 10 years, then every 60,000 miles (96,000 km) or 5 years
( (
O
O r
re
ev
ve
er
ry
y 7
7y
ye
ea
ar
rs
s, , w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
(
(
O
O r
re
ev
ve
er
ry
y 1
1y
ye
ea
ar
r,
, w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
(
( O
O r
re
ev
ve
er
ry
y 2
2y
ye
ea
ar
rs
s, , w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
Every 7,500 miles (12,000 km) or every 1 year, whichever comes first
At every 15,000 miles (24,000 km) up to 30,000 miles (48,000 km) or every 1 year, then every 30,000 miles (48,000 km) or 2 years. At 45,000 miles (72,000 km) or 3 years, then every 30,000 miles (48,000 km) or 2 years.
See information on maintenance and emissions warranty, middle column, page .
( ( O
O t
th
h e
er
rw
w i
is
se e a
ad
d j
ju
u s
stt o
o n
nl
ly
y i
if
f n
n o
oi
is
sy y )
)
120
192 135
216150
240
90
144
75
120
60
96
45
72
30
48
15
24 105
168
Check engine oil and coolant
Check tires
Replace engine oil
Rotate tires (follow pattern on page 223)
Replace engine oil filter
Check front and rear brake wear
Check parking brake adjustment
Inspect the following items: Tie-rod ends, steering gearbox, and boots
Suspension components
Driveshaft boots
Brake hoses and lines (including ABS)
All fluid levels and condition of fluids
Exhaust system
Fuel lines and connections
Inspect drive belts
Replace dust and pollen filter
Replace air cleaner element
Inspect valve clearance
Replace automatic transmission fluid
Replace transfer fluid
Replace VTM-4 rear differential fluid
Inspect idle speed
Replace spark plugs
Replace timing belt and inspect water pump
Replace engine coolant
Replace brake fluid
1:
2:: 198
1
1 2
Maintenance Schedule for Normal Conditions

Î
Î
ÎÌ
Ì
Ì
ÎÎ
ÌÎ
Maint enance200
Service the items listed at the indicated distance (or time, if given).
miles x 1,000
km x 1,000 Check oil and coolant at each fuel stop
Check inflation and condition once a month
Every 7,500 miles (12,000 km)
Every 3,750 miles (6,000 km) or every 6 months, whichever comes first
7.5
12 15
2430
4845
7260
9675
120 90
144 105
168 135
216150
240
( (
O
O r
re
ev
ve
er
ry
y 1
1y
ye
ea
ar
r,
, w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
(
( O
O r
re
ev
ve
er
ry
y 2
2y
ye
ea
ar
rs
s, , w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
Every 15,000 miles (24,000 km) (Use normal schedule except in dusty conditions)
(
(O
O t
th
h e
er
rw
w i
is
se e a
ad
d j
ju
u s
stt o
o n
nl
ly
y i
if
f n
n o
oi
is
sy y )
)
(
( O
O r
re
ev
ve
er
ry
y 7
7y
ye
ea
ar
rs
s, , w
w h
hi
ic
ch h e
ev
ve
er
r c
coo m
m e
es
s f
fi
ir
r s
st t)
)
At 120,000 miles (192,000 km) or 10 years, then every 60,000 miles (96,000 km) or 5 years
Every 3 years (independent of mileage)
At every 7,500 miles (12,000 km) up to 15,000 miles (24,000 km) or every 6 months, then every 15,000 miles (24,000 km) or 1 year.
See timing belt on page for replacement information under special driving conditions. Follow this schedule for rear differential fluid replacement if you use your vehicle for off-highway driving, trailer towing, mainly in stop-and-go driving. Otherwise, use
the fluid replacement schedule in the Maintenance Schedule for Normal Conditions.
See information on maintenance and emissions warranty, middle column, page . Every 7,500 miles (12,000 km) or every 6 months, whichever comes first
120
192
Check engine oil and coolant
Check tires
Replace engine oil and oil filter
Rotate tires (follow pattern on page 223)
Check front and rear brake wear
Inspect the following items: Tie-rod ends, steering gearbox, and boots
Suspension components, Driveshaft boots
Check parking brake adjustment
Lubricate all hinges, locks and latches
Inspect the following items: Brake hoses and lines (including ABS)
All fluid levels and condition of fluids
Exhaust system
Fuel lines and connections
Lights and controls/vehicle underbody
Inspect drive belts
Replace dust and pollen filter
Replace automatic transmission fluid
Replace transfer fluid
Replace air cleaner element
Inspect valve clearance
Replace VTM-4 rear differential fluid
Inspect idle speed
Replace spark plugs
Replace timing belt , and inspect water pump
Replace engine coolant
Replace brake fluid 1:
2:
3: : 198
213
1, 2
,3
Maintenance Schedule for Severe Conditions

Fluid Locations
Maint enance204
ENGINE OIL DIPSTICK
(Orange loop)
WASHER FLUID
(Blue cap)COOLANT
RESERVOIR
POWER STEERING
FLUID (Red cap) RADIATOR CAP ENGINE OIL FILL CAPAUTOMATIC
TRANSMISSION
FLUID DIPSTICK
(Yellow loop)
BRAKE FLUID
(Gray cap)

Oil is a major contributor to your
engine’s perf ormance and longevity.
Always use a premium-grade 5W-20
detergent oil displaying the API
Certif ication Seal. This seal indicates
the oil is energy conserving, and that
it meets the American Petroleum
Institute’s latest requirements.Honda Motor Oil is the pref erred
5W-20 lubricant f or your vehicle. It is
highly recommended that you use
Honda Motor Oil in your vehicle f or
optimum engine protection. Make
sure the API Certif ication Seal says
‘‘For Gasoline Engines’’.
The oil viscosity or weight is
provided on the container’s label.
5W-20 oil is f ormulated f or year-
round protection of your Acura to
improve cold weather starting and
f uel economy.
Unscrew and remove the engine oil
fill cap on top of the valve cover.
Pour in the oil slowly and caref ully so
you do not spill. Clean up any spills
immediately. Spilled oil could
damage components in the engine
compartment. Install the engine oil
f ill cap and tighten it securely. Wait a
f ew minutes and recheck the oil level
(see page ). Do not f ill above the
upper mark on the dipstick; you
could damage the engine. 161 Recommended Engine Oil
A dding Engine Oil
Maint enance205
API CERTIFICATION SEAL
Ambient Temperature
ENGINE OIL FILL CAP

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

Remove the oil f ilter, and let the
remaining oil drain. A special
wrench (available f rom your Acura
dealer) is required.
Install a new oil f ilter according to
the instructions that come with it.
Put a new washer on the drain bolt,
then reinstall the drain bolt.
Tighten it to:Refill the engine with the recom-
mended oil.
Engine oil change capacity
(including f ilter):
Replace the engine oil f ill cap.
Start the engine. The oil pressure
indicator should go out within 5
seconds. If it does not, turn of f the
engine and check your work.
Let the engine run f or several
minutes, then check the drain bolt
and oil f ilter f or leaks.
Turn of f the engine and let it sit
f or several minutes, then check
the oil level on the dipstick. If
necessary, add more oil.
9. 8. 7. 6.
4.
5. 3.
Maint enance
Changing the Oil and Filter
207
NOTICE:OIL FILTER
4.5 US qt (4.3)
29 lbf·ft (39 N·m , 4.0 kgf·m) Improper disposal of engine
oil can be harmf ul to the environment.
If you change your own oil, please
dispose of used oil properly. Put it in a
sealed container, and take it to a
recycling center. Do not discard used
oilinatrashbinordumpitonthe
ground.

If the coolant level in the reserve
tank is at or below the MIN line, add
coolant to bring it up to the MAX line.
Inspect the cooling system f or leaks.Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water.
Never add straight antifreeze or
plain water.
If it is not available, you may use
another major-brand non-silicate
coolant as a temporary replacement.
Make sure it is a high-quality coolant
recommended f or aluminum engines.
Continued use of any non-Honda
coolant can result in corrosion,
causing the cooling system to
malf unction or f ail. Have the cooling
system f lushed and ref illed with
Honda antif reeze/coolant as soon as
possible.If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
Engine Coolant
Maint enance
A dding Engine Coolant
208
RESERVE TANK
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.