2001 TOYOTA HIGHLANDER check engine

'05 HIGHLANDER_U (L/O 0409)
380
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Low level Full level
Add oil O.K. Too full
2AZ- FE engine
Low level Full level
Add oil O.K. Too full
3MZ- FE engine
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
1. To get a correct reading, the vehicle
should be on level ground. After turning
off the engine, wait a few minutes for
the oil to drain back into the bottom of
the engine.
2. Pull the dipstick out, hold a rag under
the end and wipe it clean.
3. Reinsert the dipstickÐpush it in as far
as it will go, or the reading will not be
correct.
4. Pull the dipstick out and look at the oil
level while holding a rag under the
end.
CAUTION
Be careful not to touch the hot ex-
haust manifold.
NOTICE

Be careful not to drop engine oil on
the vehicle components.

To avoid drops of the engine oil
falling when you pull out the engine
oil dipstick, make sure to hold a
rag under the dipstick.
If the oil level is below or only slightly
above the low level, add engine oil of
the same type as already in the engine.
Remove the oil filler cap and add engine
oil in small quantities at a time, checking
the dipstick. We recommend that you use
a funnel when adding oil.
The approximate quantity of oil needed to
raise the level between low and full on the
dipstick is indicated below for reference.
When the level reaches within the correct
range, install the filler cap hand- tight.
Oil quantity, L (qt., lmp. qt.):
2AZ- FE engine 1.0 (1.1, 0.9)
3MZ- FE engine 1.5 (1.6, 1.3)
Checking the engine oil level

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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
NOTICE

Be careful not to spill engine oil on
the vehicle components.

Avoid overfilling, or the engine
could be damaged.

Check the oil level on the dipstick
once again after adding the oil.
ENGINE OIL SELECTION
Toyota Genuine Motor Oilº is used in
your Toyota vehicle. Use Toyota approved
Toyota Genuine Motor Oilº or equivalent
to satisfy the following grade and
viscosity.
Oil grade:
API grade SL Energy- Conservingº or
ILSAC multigrade engine oil
Recommended viscosity:
SAE 5W- 30
Outside temperature
SAE 5W- 30 is the best choice for good
fuel economy and good starting in cold
weather.
If SAE 5W- 30 is not available, SAE
10W- 30 may be used. However, it
should be replaced with SAE 5W- 30 at
the next oil change.

'05 HIGHLANDER_U (L/O 0409)
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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)
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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

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
OpenIf hot O.K.
If hot add
If cold add If cold O.K.
Close
Check the fluid level through the reser-
voir. If necessary, add automatic trans-
mission fluid DEXRONII or III.
If the vehicle has been driven around 80
km/h (50 mph) for 20 minutes (a little
more in frigid temperatures), the fluid is
hot (80C or 175F). You may also check
the level when the fluid is cold (about
room temperature, 10CÐ30C or
50FÐ85F) if the engine has not been
run for about five hours.Clean all dirt from the outside of the res-
ervoir tank and look at the fluid level. If
the fluid is cold, the level should be in the
COLDº range. Similarly, if it is hot, the
fluid level should be in the HOTº range.
If the level is at the low side of either
range, add automatic transmission fluid
DEXRONII or III to bring the level within
the range.
To remove the reservoir cap, turn it coun-
terclockwise and lift up. To reinstall it,
turn it clockwise. After replacing the reser-
voir cap, visually check the steering box
case, vane pump and hose connections
for leaks or damage.
CAUTION
The reservoir tank may be hot so be
careful not to burn yourself.
NOTICE
Avoid overfilling, or the power steer-
ing could be damaged.
Checking power steering fluidChecking tire inflation
pressure

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
NOTICE

Be sure the engine and all accesso-
ries are off before performing main-
tenance.

When checking the battery, remove
the ground cable from the negative
terminal (- º mark) first and rein-
stall it last.

Be careful not to cause a short cir-
cuit with tools.

Take care no solution gets into the
battery when washing it.
If the battery is disconnected or run
down, the moon roof may not operate
automatically and the jam protection func-
tion will not function correctly after you
reconnect, replace or recharge the battery.
In any of these cases, you should normal-
ize the moon roof. To normalize the moon
roof, see Electric moon roofº on page 36
in Section 1- 2.
Ty p e A
Green DarkClear or
light yellow
Ty p e B
Blue White Red
CHECKING BY INDICATOR
Check the battery condition by the indi-
cator color.
Indicator color
ConditionTy p e ATy p e BCondition
GreenBlueGood
DarkWhite
Charging necessary.
Have battery
checked by your
Toyota dealer.
Clear or
light
yellow
RedHave battery
checked by your
Toyota dealer.
During recharging, the battery is pro-
ducing hydrogen gas.
Therefore, before recharging:
1. If recharging with the battery installed
on the vehicle, be sure to disconnect
the ground cable.
2. Be sure the power switch on the re-
charger is off when connecting the
charger cables to the battery and when
disconnecting them.
CAUTION

Always charge the battery in an un-
confined area. Do not charge the
battery in a garage or closed room
where there is not sufficient ventila-
tion.

Only do a slow charge (5 A or
less). Charging at a quicker rate is
dangerous. The battery may ex-
plode, causing personal injuries.
NOTICE
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
ÐChecking battery condition Battery recharging precautions

141P2-01
A94204
Timing Marks
Groove
Timing Marks
A53043
No. 1 Cylinder TDC/Compression
EX
IN
A52469
14-6
- ENGINE MECHANICALVALVE CLEARANCE (2AZ-FE)
2499 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
VALVE CLEARANCE (2AZ-FE)
ADJUSTMENT
1. REMOVE FRONT WHEEL RH
2. REMOVE FRONT FENDER SPLASH SHIELD FRONT RH
3. REMOVE FRONT FENDER APRON SEAL RH
4. REMOVE ENGINE COVER SUB-ASSY NO.1
5. REMOVE IGNITION COIL ASSY
6. REMOVE SPARK PLUG
7. DISCONNECT VENTILATION HOSE
8. DISCONNECT VENTILATION HOSE NO.2
9. REMOVE CYLINDER HEAD COVER SUB-ASSY
(a) Remove the bolt and disconnect the engine wire harness
clamp.
(b) Remove the 8 bolts, 2 nuts, cylinder head cover and gas-
ket.
10. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with timing
mark 0 of the timing chain cover.
(b) Check that the timing marks of the camshaft timing gear
and sprocket are aligned with the timing marks of the
bearing cap No. 1 and No. 2 as shown in the illustration.
11. INSPECT VALVE CLEARANCE
HINT:
Inspect and adjust the valve clearance when the engine is cold.
(a) Check only the valve indicated on the left.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
(2) Record valve clearance measurements that are out
of the specified range. These measurements will be
used later to determine the size of the adjustment
shim to be installed.

No. 4 Cylinder TDC/Compression
IN
EXA52470
Timing MarkPaint Mark
Timing Mark
Groove Paint Mark
A52471
A13325
- ENGINE MECHANICALVALVE CLEARANCE (2AZ-FE)
14-7
2500 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Valve clearance (Cold):
ItemSpecified Condition
Intake0.19 to 0.29 mm (0.008 to 0.011 in.)
Exhaust0.30 to 0.40 mm (0.012 to 0.016 in.)
(b) Turn the crankshaft clockwise 1 revolution (360) and set
the No.4 cylinder to TDC/compression.
(c) Check only the valve indicated on the left.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
(2) Record valve clearance measurements that are out
of the specified range. These measurements will be
used later to determine the size of the adjustment
shim to be installed.
Valve clearance (Cold):
ItemSpecified Condition
Intake0.19 to 0.29 mm (0.008 to 0.011 in.)
Exhaust0.30 to 0.40 mm (0.012 to 0.016 in.)
12. ADJUST VALVE CLEARANCE
NOTICE:
Be sure not to turn the crankshaft without the chain ten-
sioner.
(a) Turn the crankshaft clockwise 1 revolution (360) and set
the No. 1 cylinder to the TDC/compression.
(b) Place paint marks on the timing chain and camshaft tim-
ing gear sprocket.
(c) Remove the 2 bolts and chain tensioner.