Page 416 of 596
4166-3. Do-it-yourself maintenance
Engine compartment
Fuse boxes (→P. 457)
Engine oil filler cap ( →P. 418)
Engine oil level dipstick (→ P. 417)
Brake fluid reservoir (→ P. 422)
Radiator ( →P. 421) Electric cooling fan
Condenser (
→P. 421)
Power control unit
coolant reservoir ( →P. 420)
Engine coolant reservoir (→ P. 420)
Washer fluid tank ( →P. 423)1
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Page 421 of 596

4216-3. Do-it-yourself maintenance
6
Maintenance and care
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine/power control unit coolant reser-
voir caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is ex tremely dirty or you are not sure of
their condition, have yo ur vehicle inspected by your Toyota dealer.
WARNING
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps or the
radiator 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 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 it from damaging parts or paint.
Radiator and condenser
WARNING
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause seri\
-
ous injuries, such as burns.
Page 520 of 596
5207-2. Steps to take in an emergency
The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.Reservoir
“F” line
“L” line
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fan operates and to check for cool-
ant leaks from the radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fan is operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning
system on and off repeatedly. (The fan may not operate in freezing tem-
peratures.)
If the fan is not operating:
Stop the hybrid system immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle in spected at the nearest Toyota dealer.
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Page 522 of 596

5227-2. Steps to take in an emergency
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check for the multi-infor-
mation display.
If the message does not disappear:Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed: The hybrid system temperature has dropped and the vehicle
may be driven normally.
However, if the message appears again frequently, contact your Toyota
dealer.
WARNING
■To prevent an accident or injury 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.
● After the hybrid system has been turned off, check that the “READY” indi-
cator is off. When the hybrid system is operating, the gasoline engine may
automatically start, or the cooling fan may suddenly operate even if the
gasoline engine stops. Do not touch or approach rotating parts such as the
fan, which may lead to fingers or clothing (especially a tie, a scarf o\
r a muf-
fler) getting caught, resulting in serious injury.
● Do not loosen the radiator cap and the coolant reservoir cap while the
hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage to the hybrid system.
■ 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 additives.
6
Page 590 of 596

590Alphabetical index
Radar cruise control (dynamic radar cruise
control with full-speed
range) ..................................... 270
Radiator .................................... 421
Radio
*
Rear Camera Detection Function ................................. 300
Rear Cross Traffic Alert .......... 296
Rear Cross Traffic Auto Brake ............................. 314
Rear interior lights................... 355 Wattage ................................ 534
Rear passengers’ seat belt reminder light ........................ 483
Rear personal lights ................ 356
Rear seat
Folding down ........................ 171
Rear side marker lights
Light switch ........................... 227
Replacing light bulbs..... 467, 470
Wattage ................................ 534
Rear turn signal lights Replacing light bulbs..... 467, 470
Turn signal lever ................... 219
Wattage ................................ 534
Rear view mirror Inside rear view mirror .......... 177
Outside rear view mirrors...... 179 Rear view monitor system
*
Rear window defogger ............ 348
Refueling .................................. 238
Capacity................................ 528
Fuel types ..................... 528, 535
Opening the fuel tank cap..... 240
When the fuel filler door cannot be opened .............. 241
Replacing Electronic key battery ........... 455
Fuses .................................... 457
Light bulbs ............................ 460
Tires...................................... 496
Reporting safety defects for U.S. owners...................... 562
Resetting the message
indicating maintenance is
required.................................. 405
Road accident cautions ............ 81
R