2012 TOYOTA AVENSIS cooling

530 4-3. Do-it-yourself maintenance
AVENSIS_EE (OM20B44E)
CAUTION
When working near the electric cooling fan or radiator grille
Vehicles with smart entry & start system
Be sure the “ENGINE START STOP” switch is OFF.
With the “ENGINE START STOP” switch in IGNITION ON mode, the
electric cooling fan may automatically start to run if the air conditioning is
on and/or the coolant temperature is high. (P. 545)
Vehicles without smart entry & start system
Be sure the engine switch is in the “LOCK” position.
With the engine switch in the “ON” position, the electric cooling fan may
automatically start to run if the air conditioning is on and/or the coolant
temperature is high. (P. 545)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.
NOTICE
If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air. Also a backfire could cause a fire in the engine compart-
ment.
If the brake fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

535
4-3. Do-it-yourself maintenance
4
Maintenance and care
AVENSIS_EE (OM20B44E)
Engine compartment
Gasoline engine
Washer fluid tank (P. 549)
Engine coolant reservoir
(P. 543)
Engine oil filler cap
(P. 539)
Engine oil level dipstick
(P. 538)Battery (P. 545)
Fuse box (P. 569)
Cooling fan
Condenser (P. 545)
Radiator (P. 545)

536 4-3. Do-it-yourself maintenance
AVENSIS_EE (OM20B44E)
Diesel engine
Washer fluid tank (P. 549)
Engine coolant reservoir
(P. 543)
Engine oil level dipstick
(P. 538)
Engine oil filler cap
(P. 539)Fuel filter (P. 550, 713)
Fuse box (P. 569)
Battery (P. 545)
Cooling fans
Condenser (P. 545)
Intercooler (P. 545)
Radiator (P. 545)

543 4-3. Do-it-yourself maintenance
4
Maintenance and care
AVENSIS_EE (OM20B44E)
Engine coolant
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
Gasoline engine
Reservoir cap
“FULL”
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
Diesel engine
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, reservoir cap, radiator cap, drain cock
and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.

544 4-3. Do-it-yourself maintenance
AVENSIS_EE (OM20B44E)
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.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Enabled: -35C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
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 serious injuries, such as burns.
NOTICE
When adding engine coolant
Coolant is neither plain water nor straight 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.

574 4-3. Do-it-yourself maintenance
AVENSIS_EE (OM20B44E)
Fuse layout and amperage ratings
Engine compartment
FuseAmpereCircuit
1H-LP CLN30 A Headlight cleaner
2RDI FAN40 A Electric cooling fan(s)
3CDS FAN30 A Electric cooling fan(s)*1
4 ABS NO.1 50 A Anti-lock brake system, VSC
5 HTR 50 A Air conditioning system

581 4-3. Do-it-yourself maintenance
4
Maintenance and care
AVENSIS_EE (OM20B44E)
13 METER 7.5 A Gauges and meters
14 SEAT HTR 15 A Seat heaters
15 HTR-IG 10 A Air conditioning system
16 WIPER 30 AWindshield wipers, rain sensing
windshield wipers
17 RR WIPER 15 A Rear window wiper
*1
18 WASHER 15 AWindshield washers, rear window
washer*1
19 ECU-IG NO.1 10 AMain body ECU, smart entry & start
system, electric cooling fan(s), shift
lock system, panoramic roof
shade
*1, auto anti-glare inside rear
view mirror, anti-lock brake system,
steering sensor, yaw rate & G sen-
sor, VSC, headlight cleaner, pre-
crash safety system, LKA, driver
support system
20 ECU-IG NO.2 10 ABack-up lights, charging system,
emergency flashers, rear window
defogger, “PASSENGER AIRBAG”
indicator, air conditioning system,
AFS, rear view monitor, Toyota
parking assist-sensor
21 OBD 7.5 A On-board diagnosis system
FuseAmpereCircuit

5
709 5-2. Steps to take in an emergency
When trouble arises
AVENSIS_EE (OM20B44E)
CAUTION
Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery.
When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.
Do not lean over the battery.
In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
Do not allow children near the battery.
NOTICE
To prevent damaging the vehicle (vehicles with a manual transmission)
Do not pull- or push-start the vehicle, because the catalytic converter may
overheat and become a fire hazard.
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.