2018 TOYOTA RAV4 HYBRID radiator cap

492
RAV4-HV_OM_OM42B81U_(U)
7-3. Do-it-yourself maintenance
Engine compartment
■12-volt battery
→P. 500
Fuse box ( →P. 524)
Engine coolant reservoir (→ P. 496)
Engine oil filler cap ( →P. 494)
Power control unit coolant
reservoir ( →P. 496)
Brake fluid reservoir (→ P. 498) Radiator (
→P. 497)
Condenser ( →P. 497)
Electric cooling fans
Engine oil level dipstick (→ P. 493)
Washer fluid tank ( →P. 499)1
2
3
4
5
6
7
8
9
10

496
RAV4-HV_OM_OM42B81U_(U)
7-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the hybrid system is cold.
■Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line. ( →P. 602)
■
Power control unit coolant reservoir Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line. ( →P. 602)
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a 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. (Minimum temperature: -31 °F [-35 °C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45%
deionized water. (Minimum temperature: -44 °F [-42 °C])
For more details about coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir
cap, 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.
Coolant
1
2
3
1
2
3

RAV4-HV_OM_OM42B81U_(U)
4977-3. Do-it-yourself maintenance
7
Maintenance and care
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.
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.
■ When the electric cooling fans are operating
Do not touch the engine compartment.
With the power switch in ON mode, t he electric cooling fans may automati-
cally start to run if the air condition ing is on and/or the coolant temperature
is high. Be sure the power switch is off when working near the electric cool-
ing fans or radiator grille.

673Alphabetical index
RAV4-HV_OM_OM42B81U_(U)
Parking assist sensors (intuitive parking assist) ....... 284
Parking brake ........................... 215 Operation .............................. 215
Parking brake engaged warning buzzer ................... 551
Warning message ................. 565
Parking lights ........................... 216
Light switch ........................... 216
Replacing light bulbs..... 530, 538
Wattage ................................ 618
PCS (Pre-Collision System) Enabling/disabling the system ......... ....................... 249
Function ................................ 244
Warning light ......................... 552
Warning message ................. 568
Personal lights ......................... 440 Switch ................................... 441
Wattage ................................ 618
Power back door opener and closer .............................. 119
Power control unit coolant ..... 496
Capacity ................................ 614
Checking ............................... 496
Preparing and checking before winter....................... 321
Power outlet ............................. 458
Power steering (Electric Power Steering system) ....... 312
Warning light ......................... 552
Power switch............................ 201
Power windows........................ 162 Catch protection function ...... 163
Jam protection function......... 163
Operation .............................. 162
Window lock switch............... 162 Pre-Collision System (PCS)
Enabling/disabling the
system .......... ...................... 249
Function ................................ 244
Warning light......................... 552
Warning message................. 568
Radar cruise control (dynamic radar cruise control) ............. 268
Radiator .................................... 497
Radio ........................................ 353
Radio Broadcast Data System (RBDS)
*
Rear passengers’ seat
belt reminder light................. 553
Rear seat .................................. 147
Adjustment............................ 147
Folding down the rear seatbacks ........................... 148
Rear side marker lights........... 216 Light switch ........................... 216
Replacing light bulbs ............ 534
Wattage ................................ 618
Rear turn signal lights ............ 214 Replacing light bulbs ............ 534
Turn signal lever ................... 214
Wattage ................................ 618
Rear view mirror Inside rear view mirror .......... 157
Outside rear view mirrors ..... 159
Rear view monitor system ...... 292
Rear window defogger ............ 433
Rear window wiper .................. 231
Refueling .................................. 234 Capacity................................ 612
Fuel types ............................. 612
Opening the fuel tank cap..... 236
Regenerative braking ................ 77
P
R
*: Refer to “NAVIGATION AND MULT IMEDIA SYSTEM OWNER’S MANUAL”.