2003 Acura MDX radiator

These labels are in the locations
shown. They warn you of potential
hazards that could cause serious
injury. Read these labels caref ully.
If a label comes of f or becomes hard
to read, contact your Acura dealer
f or a replacement.U.S. models onlyU.S. models
Canadian models
Saf ety L abels
Driver and Passenger Saf ety63
RADIATOR CAP SUN VISOR
HOOD DASHBOARD
BATTERY LABEL

Remove the dipstick again and
check the level. It should be
between the upper and lower
marks.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.
If it is near or below the lower mark,
see
on page . Refer to
on page f or inf ormation
on checking other items in your
Acura.
4. 307 305
311 A dding
Engine Coolant
A dding Oil Owner Maintenance
Checks
Engine Coolant Check
Bef ore Driving
Service Station Procedures
241
UPPER MARK
LOWER MARK MAX
MIN RESERVE TANK

µµ µ
µ
µ µ
Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the page given.
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 .Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page
.
Automatic transmission Check
the f luid level monthly. See page .
Brakes Check the f luid level
monthly. See page . Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate lights monthly. See
page .
240
241
317 319 332
339
Owner Maintenance Checks
Maint enance305

Fluid Locations
Maint enance306
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)

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.
The coolant you add should always
be a mixture of 50 percent antif reeze
and 50 percent water. Never add
straight antif reeze or plain water.If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water. It
does not require any additional
mixing.
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.
However, 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.
CONT INUED
A dding Engine Coolant
Cooling Syst em
Maint enance311
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.

Make sure the engine and radiator
are cool.
Turn the radiator cap counter-
clockwise, without pressing down
on it, until it stops. This relieves
any pressure remaining in the
cooling system.
Remove the radiator cap by
pushing down and turning
counterclockwise.The coolant level should be up to
the base of the f iller neck. Add
coolant if it is low.Do not add any rust inhibitors or
other additives to your vehicle’s
cooling system. They may not be
compatible with the coolant or
engine components.
Pour coolant into the reserve tank.
Fill it to half way between the MAX
and MIN marks. Put the cap back
on the reserve tank.
Pourthecoolantslowlyand
caref ully so you do not spill. Clean
up any spills immediately. Spilled
coolant could damage components
in the engine compartment.
Put the radiator cap back on.
Tighten it f ully.
3. 4.
5. 6.
1.
2.
Cooling Syst em
Maint enance312
RESERVE TANK

CONT INUED
Turn the ignition ON (II). Set the
Climate control system to 90°F
(32°C). Turn the ignition of f .
Openthehood.Makesurethe
engine and radiator are cool to the
touch.
Remove the radiator cap.Loosen the drain plug on the
bottom of the radiator. The
coolant will drain through the
splash guard.
Thecoolingsystemshouldbe
completely drained and ref illed with
new coolant according to the time
and distance recommendations in
the maintenance schedule. Only use
Honda All Season Antif reeze/
Coolant Type 2. Use of any non-
Honda coolant or plain water can
result in corrosion and deposits in
the cooling system.
Draining the coolant requires access
to the underside of the vehicle.
Unless you have the tools and
knowledge, you should have this
maintenance done by a skilled
mechanic.
1.
3.
2.
Replacing Engine Coolant
Cooling Syst em
Maint enance313
DRAIN PLUG

When the coolant stops draining,
tightenthedrainplugatthe
bottom of the radiator.
Tighten the drain bolt at the rear
of the engine cylinder block
securely.
Tightening torque:
Remove the reserve tank f rom its
holder by pulling it straight up.
Drain the coolant, then put the
tank back in its holder.
Install a rubber hose on the drain
bolt in the back of the engine
block. Loosen the drain bolt. 6.
4. 5. 7.
Cooling Syst em
Maint enance314
DRAIN BOLT
RESERVE TANK
RESERVE
TANK CAP
HOLDER
7 lbf·ft (10 N·m , 1.0 kgf·m)