2001 TOYOTA HIGHLANDER radiator

'05 HIGHLANDER_U (L/O 0409)
376
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Be extremely cautious when work-
ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
NOTICE

Remember that battery and ignition
cable carry high currents or volt-
ages. Be careful of accidentally
causing a short circuit.

Add only Toyota Super Long Life
Coolantº or similar high quality eth-
ylene glycol based non- silicate,
non- amine, non- nitrite, and non- bo-
rate coolant with long- life hybrid
organic acid technology to fill the
radiator. Toyota Super Long Life
Coolantº is a mixture of 50% cool-
ant and 50% deionized water (for
the U.S.A.) or 55% coolant and 45%
deionized water (for Canada).

If you spill some of the coolant, be
sure to wash it off with water to
prevent it from damaging the parts
or paint.

Do not allow dirt or anything else
to fall through the spark plug holes.

Use only spark plugs of the speci-
fied type. Using other types will
cause engine damage, loss of per-
formance or radio noise.

Do not reuse iridium- tipped spark
plugs by cleaning or regapping.

Do not overfill automatic transmis-
sion fluid and power steering fluid,
or the transmission and power
steering could be damaged.

Do not drive with the air cleaner
filter removed, or excessive engine
wear could result. Also backfiring
could cause a fire in the engine
compartment.

Be careful not to scratch the glass
surface with the wiper frame.

When closing the engine hood,
check to see that you have not for-
gotten any tools, rags, etc.
Front
Rear (two- wheel drive models)
Positioning the jack

'05 HIGHLANDER_U (L/O 0409)
379
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
DO- IT- YOURSELF MAINTENANCE
Engine and Chassis
Checking the engine oil level380 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level383 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the radiator and condenser384 . . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake fluid384 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking power steering fluid385 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking tire inflation pressure385 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing tires388 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotating tires390 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing snow tires and chains390 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing wheels392 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aluminum wheel precautions393 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 7- 2

'05 HIGHLANDER_U (L/O 0409)
383
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Look at the see- through coolant reser-
voir when the engine is cold. The cool-
ant level is satisfactory if it is between
the Fº and Lº lines on the reservoir.
If the level is low, add the coolant. (For
the coolant type, see Coolant type
selectionº described below.)
The coolant level in the reservoir will vary
with engine temperature. However, if the
level is on or below the Lº line, add
coolant. Bring the level up to the Fº line.
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.
Only use Toyota Super Long Life Coolantº
or similar high quality ethylene glycol
based non- silicate, non- amine, non- nitrite,
and non- borate coolant with long- life
hybrid organic acid technology. (Coolant
with long- life hybrid organic acid
technology is a combination of low
phosphates and organic acids.)
For the U.S.A.ÐToyota Super Long Life
Coolantº is a mixture of 50% coolant and
50% deionized water. This coolant pro-
vides protection down to about -35C
(- 31F).
For CanadaÐToyota Super Long Life
Coolantº is a mixture of 55% coolant and
45% deionized water. This coolant pro-
vides protection down to about -42C
(- 44F).
NOTICE
Do not use plain water alone.
Toyota recommends Toyota Super Long
Life Coolantº, which has been tested to
ensure that it will not cause corrosion nor
result in malfunction of your engine
coolant system with proper usage. Toyota
Super Long Life Coolantº is formulated
with long- life hybrid organic acid
technology and has been specifically
designed to avoid engine cooling system
malfunction on Toyota vehicles.
Please contact your Toyota dealer for
further details.
Checking the engine coolant
level

'05 HIGHLANDER_U (L/O 0409)
384
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
If either of the above parts are extremely
dirty or you are not sure of their condi-
tion, take your vehicle to a Toyota dealer.
CAUTION
To prevent burning yourself, be care-
ful not to touch the radiator or con-
denser when the engine is hot.
NOTICE
To prevent damage to the radiator
and condenser, do not perform the
work by yourself.
To check the fluid level, simply look at
the see- through reservoir. The level
should be between the MAXº and
MINº lines on the reservoir.
It is normal for the brake fluid level to go
down slightly as the brake pads wear. So
be sure to keep the reservoir filled.
If the reservoir needs frequent refilling, it
may indicate a serious mechanical prob-
lem.
If the level is low, add SAE J1703 or
FMVSS No.116 DOT 3 brake fluid to the
brake reservoir.Remove and replace the reservoir cap by
hand. Fill the brake fluid to the dotted
line. This brings the fluid to the correct
level when you put the cap back on.
Use only newly opened brake fluid. Once
opened, brake fluid absorbs moisture from
the air, and excess moisture can cause a
dangerous loss of braking.
CAUTION
Take care when filling the reservoir
because brake fluid can harm your
hands or eyes. If fluid gets on your
hands or in your eyes, flush the af-
fected area with clean water immedi-
ately. If you still feel uncomfortable
with your hands or eyes, go to the
doctor.
NOTICE
If you spill some of the fluid, be sure
to wipe it off to prevent it from dam-
aging the parts or paintwork.
Checking the radiator and
condenserChecking brake fluid

(Three-Dimensional Distance)
Symbol Name Hole dia. Symbol Name Hole dia.mm (in.)
A, a
B, b
C, c
D
E, e
G, gFront fender installation nut-front
Front spring support hole-inner
Front fender installation nut-rear
Cowl top inner panel standard hole
Front side member standard hole
Radiator upper support installation nut6 (0.24) nut
11 (0.43)
6 (0.24) nut
8 (0.31)
18 (0.71)
6 (0.24) nutH, h
I
J, j
K, k
L, l
M, m
N, n
ÐFront crossmember side gusset standard hole
Hood lock support installation nut
Front bumper reinforcement installation nut
Radiator upper support installation nut
Radiator support standard hole
Front Fender apron to cowl side member standard hole
Hood hinge installation nut-rear
Ð15 (0.59)
6 (0.24) nut
10 (0.39) nut
6 (0.24) nut
10 (0.39)
10 (0.39)
8 (0.31) nut
Ð Front side member standard hole F, f
C-N
or D-E D-e H-h L-l
c-n
106 988 985 860 1,461
(4.17) (38.90) (38.78) (33.86) (57.52)
Vehicle Dimensions
RH : 18 (0.71)
LH : 13 (0.51)
A, a G, g N, n
756 724 858
(29.76) (28.50) (33.78)
Height from lmaginary Standard Line
HINT: For symbols, capital letters indicate right side of vehicle,
small letters indicate left side of vehicle (seen from rear).
1,479
(58.23)
709
(27.91)1,612
(63.46)
1,562
(61.50)555
(21.85)1,289
(50.75)848
(33.39)289
(11.38)
526
(20.71)
1,068
(42.05)
1,462
(57.56)1,418
(55.83)936
(36.85)
848
(33.39)702
(27.64)1,062
(41.81)1,064
(41.89)
712
(28.03)851
(33.50)
334
(13.15)682
(26.85)996
(39.21)648
(25.51)
580
(22.83)1,036
(40.79)
531
(20.91)
BODY DIMENSIONSDI-3
BODY DIMENSION DRAWINGS
ENGINE COMPARTMENT

05-1 14
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
304 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:

If DTCs P0115, P0116, P0117, P0118 and P0125 are output simultaneously, engine coolant tempera-
ture sensor circuit may be open or short. Perform the troubleshooting of DTC P0115, P0117 or P0118
first.

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can
help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel
ratio was lean or rich, and other data from the time the malfunction occurred.
1 CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0125)
(a) Read the DTC using the hand-held tester or the OBD II scan tool.
Result:
Display (DTC Output)Proceed to
Only P0125 are outputA
P0125 and other DTCs are outputB
HINT:
If any other codes besides P0125 is output, perform the troubleshooting for those codes first.
B GO TO RELEVANT DTC CHART
(See page 05-48)
A
2 INSPECT THERMOSTAT (See page 16-2)
(a) Check the valve opening temperature of the thermostat.
OK:
Valve opening temperature: 80 to 84C (176 to 183F)
HINT:
Also check that the valve is completely closed under opening temperature as above.
NG REPLACE THERMOSTAT (See page 16-1 1)
OK
3 CHECK COOLING SYSTEM
(a) Check the cooling system for excessive cooling, such as abnormal radiator fan operation, modified
cooling system and other defects.
OK:
There is no modification of cooling system.
NG REPAIR OR REPLACE COOLING SYSTEM
OK
REPLACE ENGINE COOLANT TEMPERATURE SENSOR

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-1 17
307 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean
or rich, and other data from the time the malfunction occurred.
1 CHECK COOLING SYSTEM
(a) Check the cooling system for excessive cooling, such as abnormal radiator fan operation, modified
cooling system and other defects.
NG REPAIR OR REPLACE COOLING SYSTEM
OK
2 INSPECT THERMOSTAT (See page 16-2)
(a) Check the valve opening temperature of the thermostat.
OK:
Valve opening temperature: 80 to 84C (176 to 183F)
HINT:
Also check that the valve is completely closed under opening temperature as above.
NG REPLACE THERMOSTAT(See page 16-1 1)
OK
REPLACE ECM(See page 10-9)

F14827
F14827B
REMOVALBODY PANEL REPLACEMENT
BP-11
FRONT CROSSMEMBER NO.1
REINFORCEMENT (ASSY)
REPLACEMENT
With the radiator side support, front crossmember side gusset and front cross-
member removed.