Page 626 of 712
6268-2. Steps to take in an emergency
HIGHLANDER_U (OM48A12U)
●The needle of the engine coolant temperature gauge ( P. 9 4 )
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact your
Toyota dealer.
The coolant level is satisfactory
if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Radiator cap
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
4
1
2
3
4
Page 627 of 712

6278-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_U (OM48A12U)
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
5
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
6
7
Page 628 of 712
6288-2. Steps to take in an emergency
HIGHLANDER_U (OM48A12U)
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.
Page 629 of 712
6298-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_U (OM48A12U)
Stop the engine. Set the parking brake and shift the shift lever to P.
Remove the mud, snow or sand from around the front wheels.
Place wood, stones or some other material under the front wheels
to help provide traction.
Restart the engine.
AWD models: Activate all-wheel drive lock mode. (P. 297)
Shift the shift lever to D or R and release the parking brake. Then,
while exercising caution, depress the accelerator pedal.
■ When it is difficult to free the vehicle
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Press to turn off TRAC.
1
2
3
4
5
6
Page 632 of 712
632
HIGHLANDER_U (OM48A12U)
9-1. Specifications
*1: Unladen vehicles
*2: With a seating capacity of 7 occupants
*3: With a seating capacity of 8 occupants
*4: Without a towing package
*5: With a towing package
Maintenance data (fuel, oil level, etc.)
Dimensions and weights
Overall length191.1 in. (4855 mm)
Overall width75.8 in. (1925 mm)
Overall height*1
Without roof antenna
68.1 in. (1730 mm)
With roof antenna
70.1 in. (1780 mm)
Wheelbase 109.8 in. (2790 mm)
Front tread 64.4 in. (1635 mm)
Rear tread 64.2 in. (1630 mm)
Vehicle capacity weight
(Occupant + luggage)1385 lb. (625 kg)*2
1455 lb. (660 kg)*3
Trailer Weight Rating
(Trailer weight + cargo weight)
2.7 L 4-cylinder (1AR-FE)
engine
1500 lb. (680 kg)
3.5 L V6 (2GR-FE) engine
2000 lb. (900 kg)
*4
5000 lb. (2000 kg)*5
Page 634 of 712
6349-1. Specifications
HIGHLANDER_U (OM48A12U)■
Engine number
The engine number is stamped on the engine block as shown.
2.7 L 4-cylinder (1AR-FE)
engine3.5 L V6 (2GR-FE) engine
Page 635 of 712
6359-1. Specifications
9
Vehicle specifications
HIGHLANDER_U (OM48A12U)
Engine
Model1AR-FE2GR-FE
Typ e 4-cylinder in line,
4-cycle, gasoline6-cylinder V type,
4-cycle, gasoline
Bore and stroke
3.54
4.13 in.
(90.0 105.0 mm) 3.70
3.27 in.
(94.0 83.0 mm)
Displacement 163.1 cu. in.
(2672 cm3)210.9 cu. in.
(3456 cm3)
Valve clearance
Automatic adjustment
Drive belt tension
Fuel
Fuel typeUnleaded gasoline only
Octane rating87 (Research Octane Number 91) or higher
Fuel tank capacity
(Reference)19.2 gal. (72.5 L, 15.9 Imp. gal.)
Page 636 of 712

6369-1. Specifications
HIGHLANDER_U (OM48A12U)
*: The engine oil capacity is a reference quantity to be used when changingthe engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
■
Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to satisfy
the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Lubrication system
Oil capacity
(Drain and refill reference
*)
With filter
2.7 L 4-cylinder (1AR-FE) engine
4.6 qt. (4.4 L, 3.9 Imp. qt.)
3.5 L V6 (2GR-FE) engine
6.4 qt. (6.1 L, 5.4 Imp. qt.)
Without filter2.7 L 4-cylinder (1AR-FE) engine
4.2 qt. (4.0 L, 3.5 Imp. qt.)
3.5 L V6 (2GR-FE) engine
6.0 qt. (5.7 L, 5.0 Imp. qt.)
Outside temperature