2002 TOYOTA HIGHLANDER cooling

’02 HIGHLANDER_U (L/O 0108)
2492002 MY HIGHLANDER_U (OM48429U)
If you perform maintenance by yourself,
be sure to follow the correct procedure
given in this section.
You should be aware that improper or in-
complete servicing may result in operating
problems.
Performing doityourself maintenance
during the warranty period may affect your
warranty coverage. Read the separate
Toyota Warranty statement for details and
suggestions.
This section gives instructions only for
those items that are relatively easy for an
owner to perform. As explained in Section
6, there are still a number of items that
must be done by a qualified technician
with special tools.
For information on tools and parts for do
ityourself maintenance, see “Parts and
tools” on page 251 in this section.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that
you should be especially careful to ob-
serve:CAUTION
When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
Right after driving, the engine
compartment—the engine, radiator,
exhaust manifold, power steering
fluid reservoir and spark plug
boots, etc.—will be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.
Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Be sure that the ignition is off if
you work near the electric cooling
fans or radiator grille. With the
ignition on, the electric cooling fans
will automatically start to run if the
engine coolant temperature is high
and/or the air conditioning is on.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.
Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.
Do not leave used oil within the
reach of children.
Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.
Doityourself service
precautions

’02 HIGHLANDER_U (L/O 0108)
2562002 MY HIGHLANDER_U (OM48429U)
Look at the seethrough coolant reser-
voir when the engine is cold. The cool-
ant level is satisfactory if it is between
the “F” and “L” lines on the reservoir.
If the level is low, add ethyleneglycol
type coolant for a proper corrosion
protection of aluminum components.
The coolant level in the reservoir will vary
with engine temperature. However, if the
level is on or below the “L” line, add
coolant. Bring the level up to the “F” line.
Always use ethyleneglycol type coolant
for a proper corrosion protection of alumi-
num components. See information in the
next column.
If the coolant level drops within a short
time after replenishing, there may be a
leak in the system. Visually check the
radiator, hoses, radiator cap and drain
cock and water pump.
If you can find no leak, have your Toyota
dealer test the cap pressure and check
for leaks in the cooling system.CAUTION
To prevent burning yourself, do not
remove the radiator cap when the en-
gine is hot.
Coolant type selection
Use of improper coolants may damage
your engine cooling system. Your coolant
must contain ethyleneglycol type coolant
for a proper corrosion protection of your
engine that contains aluminum compo-
nents. Use “TOYOTA Long Life Coolant”
or equivalent.
In addition to preventing freezing and sub-
sequent damage to the engine, this type
of coolant will also prevent corrosion. Fur-
ther supplemental inhibitors or additives
are neither needed nor recommended.
Read the coolant container for information
on freeze protection. Follow the manufac-
turer’s directions for how much to mix
with plain water (preferably demineralized
water or distilled water). The total c apacity
of the cooling system is given on page
280 in Section 8. We recommend to use 50% solution for
your Toyota, to provide protection down to
about 35
C (31 F). When it is extreme-
ly cold, to provide protection down to
about 50 C (58 F), 60% solution is rec-
ommended. Do not use more than 70%
solution for better coolant performance.NOTICE
Do not use alcohol type antifreeze or
plain water alone.
Checking the engine coolant
level

’02 HIGHLANDER_U (L/O 0108)
2652002 MY HIGHLANDER_U (OM48429U)
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace damaged wheels, the
tire may slip off the wheel or cause loss
of handling control.
WHEEL SELECTION
When replacing wheels, care should be
taken to ensure that the wheels are re-
placed by ones with the same load ca-
pacity, diameter, rim width, and offset.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may
adversely affect handling, wheel and bear-
ing life, brake cooling, speedometer/odom-
eter calibration, stopping ab ility, headlight
aim, bumper height, vehicle ground clear-
ance, and tire or snow chain clearance to
the body and chassis. Replacement with used wheels is not rec-
ommended as they may have been sub-
jected to rough treatment or high mileage
and could fail without warning. Also, bent
wheels which have been straightened may
have structural damage and therefore
should not be used. Never use an inner
tube in a leaking wheel which is designed
for a tubeless tire.
NOTICE
Fourwheel drive models:
Do not use wheels of different
brands, sizes and types. This may
damage the drive system.
When installing aluminum w
heels,
check that the wheel nuts are tight
after driving your vehicle the first 1600
km (1000 miles).
If you have rotated, repaired, or
changed your tires, check that the
wheel nuts are still tight after driving
1600 km (1000 miles).
When using tire chains, be careful not
to damage the aluminum wheels.
Use only the Toyota wheel nuts and
wrench designed for your aluminum
wheels.
When balancing your wheels, use only
Toyota balance weights or equivalent
and a plastic or rubber hammer.
As with any wheel, periodically check
your aluminum wheels for damage. If
damaged, replace immediately.
Replacing wheels Aluminum wheel precautions

’02 HIGHLANDER_U (L/O 0108)
2802002 MY HIGHLANDER_U (OM48429U)
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):
2AZFE engine 6.4 (6.8, 5.6)
1MZFE engine 9.4 (9.9, 8.2)
Coolant type:
“TOYOTA Long Life Coolant” or equiva-
lent
With ethyleneglycol type coolant for a
proper corrosion protection of aluminum
components
Do not use alcohol type antifreeze or
plain water alone.
BATTERY
Open voltage
∗ at 20 C (68 F):
12.6—12.8V Fully charged
12.2—12.4V Half charged
11.8—12.0V Discharged
∗: Voltage that is checked 20 minutes af-
ter the key is removed with all the lights
turned off
Charging rates: 5 A max. AUTOMATIC TRANSAXLE
Fluid capacity (drain and ref
ill), L (qt.,
Imp. qt.):
Twowheel drive modelsUp to 3.3 (3.5, 2.9)
Fourwheel drive models Up to 3.9 (4.1, 3.4)
Fluid type: Automatic transmission fluid Type TIV
Change automatic transmission fluid only
as necessary.
Generally, it is necessary to change
automatic transmission fluid only if your
vehicle is driven under one of the Special
Operating Conditions listed in your
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”. When
changing the automatic transmission fluid,
use only Toyota Genuine ATF Type TIV
(ATF JWS3309 or NWS6500) to aid in
assuring optimum transaxle performance.
Notice: Using automatic transmission
fluid other than Toyota Genuine ATF
Type TIV may cause deterioration in
shift quality, locking up of your trans-
mission accompanied by vibration, and
ultimately damage the automatic trans-
mission of your vehicle. TRANSFER
(fourwheel drive models)
Oil capacity, L (qt., Imp. qt.):
0.9 (1.0, 0.8)
Oil type: Hypoid gear oil API GL5
Recommended oil viscosity: Above 18 C (0 F)
SAE 90
Below 18 C (0 F)
SAE 80W or 80W90
REAR DIFFERENTIAL
(fourwheel drive models)
Oil capacity, L (qt., Imp. qt.): 0.9 (1.0, 0.8)
Oil type: Hypoid gear oil API GL5
Recommended oil viscosity: Above 18 C (0 F)
SAE 90
Below 18 C (0 F)
SAE 80W or 80W90

’02 HIGHLANDER_U (L/O 0108)
2832002 MY HIGHLANDER_U (OM48429U)
13. DOOR LOCK 25 A: Power door lock
system, theft deterrent system
14. HEAD LP LH UPR 10 A: Lefthand
headlight (high beam)
15. RADIO NO.1 25 A: Car audio system
16. DOME 10 A: Personal light, interior
lights, vanity mirror lights, ignition
switch light, wireless remote control
system, g auges and meters
17. HAZARD 15 A: Emergency flashers,
instrument panel light
18. SPARE 7.5 A: Spare fuse
19. SPARE 15 A: Spare fuse
20. SPARE 25 A: Spare fuse
21. IGN 7.5 A: Gauges and meters, SRS
airbag system
22. RADIO NO.2 7.5 A: Car audio system
23. CIG 15 A: Cigarette lighter
24. D RR DOOR 20 A: Power windows
25. PWR OUTLET 15 A: Power outlets
26. FR FOG 10 A: Front fog lights
27. SRSIG 15 A: SRS airbag system
28. ECUIG 15 A: Electric moon roof,
antilock brake system, vehicle skid
control system, shift lock system,
charging system, cruise control system,
emergency flashers, starting system 29. WIPER 25 A:
Windshield wipers and
washer
30. P RR DOOR 20 A: Power windows
31. P FR DOOR 25 A: Power windows,
door courtesy lights, power door lock
system
32. S/ROOF 20 A: Electric moon roof
33. HEATER 15 A: Air conditioning system,
electric cooling fan, rear defogger, out-
side rear view mirror defogger, gauges
and meters
34. IG1 7.5 A: Backup lights, vehicle skid
control system, multiport fuel injection
system/s equential multiport fuel injec-
tion system, outside rear view mirror
heaters, power door lock system, wire-
less remote control system
35. RR WIP 15 A: Rear window wiper
36. STOP 20 A: Stop lights, high mounted
stoplight, antilock brake system, ve-
hicle skid control system, shift lock
system, cruise control system, multiport
fuel injection system/sequential multi-
port fuel injection system
37. OBD 7.5 A: Onboard diagnosis sys-
tem
38. SEAT HTR 15 A: Seat heaters 39. IG2 15 A:
Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, charging system, starter sys-
tem
40. WASHER 20 A: Washer fluid level
warning light
41. RR FOG 7.5 A: No circuit
42. FR DEF 20 A: Air conditioning system,
outside rear view mirror defoggers
43. D FR DOOR 20 A: Power windows,
door courtesy lights
44. TAIL 10 A: Tail lights, license plate
lights, instrument panel lights, front fog
lights, front side marker lights, rear
side marker lights, parking lights
45. PANEL 7.5 A: Instrument panel lights
46. DRL 7.5 A: Daytime running light sys-
tem
Fuses
(type B)
47. AM2 30 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, starting system
48. ABS2 40 A: Antilock brake system,
vehicle skid control system
49. ABS1 40 A: Antilock brake system,
vehicle skid control system
50. HEATER 50 A: Air conditioning system

’02 HIGHLANDER_U (L/O 0108)
2842002 MY HIGHLANDER_U (OM48429U)
51. RDI 30 A: Electric cooling fans
52. RR DEF 30 A: Rear window defoggers
53. CDS 30 A: Electric cooling fans
54. RDI 50 A: No circuit
55. MAIN 40 A: “HEAD LP RH LWR”,
“HEAD LP LH LWR”, “HEAD LP RH
UPR” and “HEAD LP LH UPR” fuses
56. AM1 40 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, starting system
57. POWER 30 A: Power seat
Fuse (type C)
58. ALT 140 A: “ABS1”, “ABS2”, “RDI”,
“CDS”, “RR DEF”, “HEATER”, “AM1”,
“AM2”, “TAIL”, “PANEL”, “STOP”,
“S/ROOF” and “SEAT HTR” fuses