2008 TOYOTA HIGHLANDER cooling

242
3-1. Using the air conditioning system and defogger
Front manual air conditioning system (if equipped)
Adjusting the settings
■ Adjusting the temperature setting
Turn the temperature control dial clockwise (warm) or counter-
clockwise (cool).
If is not pressed, the system will blow ambient temperature air or
heated air.
For quick cooling, turn the temperature selector knob to the “MAX A/C”
position. The air conditioning will automatically turn on in (recir-
culated air) mode.
■ Adjusting the fan speed
Turn the fan speed control dial clockwise (increase) or counter-
clockwise (decrease).
Turn the dial to “OFF” to turn the fan off.
Fan speed control dial
Air outlet selection dial
Air conditioning ON/OFF switch
Temperature control dial
Outside air or recirculated air mode
Rear air conditioning
ON/OFF switch*
*: If equipped

412 4-3. Do-it-yourself maintenance
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury observe the following precautions.
■When working on the engine compartment
●Keep hands, clothing, and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
● Do not touch the engine compartment when the electric cooling fan is
operating.
The electric cooling fan may keep rotating for about 3 minutes even after
the “ENGINE START STOP” switch or the engine switch is OFF.
With the “ENGINE START STOP” switch or the engine switch in ON, the
electric cooling fan may automatically start to run if the air conditioning is
on and/or the coolant temperature is high. Be sure the “ENGINE START
STOP” switch or the engine switch is OFF when working near the electric
cooling fan or radiator grille.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

419
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compar tment
Washer fluid tank (P. 432)
Engine oil filler cap ( P. 422)
Engine oil level dipstick ( P. 421)
Engine coolant reservoir ( P. 426)Battery ( P. 430)
Brake fluid reservoir ( P. 428)
Fuse boxes ( P. 455)
Electric cooling fans
Condenser ( P. 428)
Radiator ( P. 428)

426 4-3. Do-it-yourself maintenance
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
Reservoir cap
“FULL”
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, engine coolant filler cap, radiator cap,
drain cock and water pump.
If you cannot find a leak, have your Toyota dealer pressure test the cap and
check for leaks in the cooling system.

427
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
U.S.A.: Toyota Super Long Life Coolant is a mixture of 50% coolant and 50% deionized water. (Enabled: -31 F [-35 C])
Canada: Toyota Super Long Life Coolant is a mixture of 55% coolant and 45% deionized water. (Enabled: -44 F [-42 C])
For more details about engine coolant, contact your Toyota dealer.
CAUTION
■ When the engine is hot
Do not remove the coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing burns or other injuries.
NOTICE
■When adding engine coolant
Coolant is neither plain water nor stra ight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.

428 4-3. Do-it-yourself maintenance
Radiator and condenserCheck the radiator and condenser and clear any foreign objects.
If either of the above parts are ex tremely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
CAUTION
■ When the engine is hot
Do not touch the radiator or condenser as they may be hot and may cause
burns.
■ When the electric cooling fan is operating
Do not touch the engine compartment.
The electric cooling fan may keep rotating for about 3 minutes even after the
“ENGINE START STOP” switch or the engine switch is OFF.
With the “ENGINE START STOP” switch or the engine switch in ON, the
electric cooling fan may automatically start to run if the air conditioning is on
and/or the coolant temperature is high. Be sure the “ENGINE START STOP”
switch or the engine switch is OFF when working near the electric cooling
fan.

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
4 DEF RLY
10 A Rear window defogger
5 MIR HTR 20 A MIR HTR (15 A)
6 P/OUT 20 A Power outlet
7 DOOR 1 25 A Multiplex communication system
8 EFI NO.2 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
9 EFI NO.3 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
10 INJ NO.1 15 A Starting system
11 INJ NO.2 10 A Starting system
12 HTR 50 A Air conditioning system
13 VSC NO.1 50 A Vehicle stability control
14 FAN MAIN 50 A Electric cooling fan
15 VSC NO.2 30 A Vehicle stability control
16 PTC NO.1 50 A PTC heater
17 PTC NO.2 30 A PTC heater
18 PTC NO.3 30 A PTC heater
19 RR CLR 40 A Air conditioning system
20 RR DEF 30 A Rear window defogger
21 PBD 30 A Power back door
22 ALT 140 AMIR HTR, P/OUT, DOOR 1, HTR,
RR DEF, FAN MAIN, ABS NO.1,
PTC NO.1, RR CLR, PTC NO.2,
PTC NO.3, ABS NO.2, PBD
23 EPS 80 A Electric power steering
24 ST 30 A Starting system
25 CRT 10 A Rear seat entertainment system
FuseAmpereCircuit

5
When trouble arises
519
5-2. Steps to take in an emergency
NOTICE
■
When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan
or any of the belts when connecting or disconnecting them.