2019 TOYOTA PRIUS PRIME radiator cap

586
PRIUS PRIME_OM_OM47D13U_(U)
7-3. Do-it-yourself maintenance
Engine compartment
Engine coolant reservoir ( P. 590)
Fuse boxes ( P. 636)
Engine oil level dipstick ( P. 587)
Engine oil filler cap ( P. 588)
Brake fluid reservoir ( P. 596) Washer fluid tank (
P. 598)
12-volt battery ( P. 593)
Power control unit coolant
reservoir ( P. 590)
Radiator ( P. 592)
Condenser ( P. 592)
Electric cooling fans1
2
3
4
5
6
7
8
9
10
11

PRIUS PRIME_OM_OM47D13U_(U)
5917-3. Do-it-yourself maintenance
7
Maintenance and care
■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-bora te coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized 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 c oolant reservoir
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.
WARNING
■ When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir c aps.
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 straight antifreeze. The cor rect 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 p arts or paint.

782Alphabetical index
PRIUS PRIME_OM_OM47D13U_(U)
P position switch ..................... 339
Panic mode .............................. 271
Parking assist sensors Intelligent Clearance Sonar .................................. 439
Intuitive parking assist .......... 429
S-APGS (Simple Advanced Parking Guidance
System) .............................. 451
Parking brake ........................... 345 Operation .............................. 345
Parking brake engaged
warning buzzer ................... 345
Parking lights ........................... 346
Light switch ........................... 346
Replacing light bulbs............. 646
Parking lock ............................. 339
PCS (Pre-Collision System) .... 377
Enabling/disabling the system ......... ....................... 381
Function ................................ 377
Warning light ......................... 661
Personal lights ......................... 524
Switch ................................... 525
Wattage ................................ 724
Plug-in hybrid system ............... 84 Driving tips ............................ 103
EV auto mode ......................... 85
EV driving range ................... 106
EV mode ................................. 85
EV/HV mode selection
switch ................................... 88
Features.................................. 84
How to charge....................... 143
HV mode ................................. 85
Hybrid battery (traction
battery) charge mode ........... 85 Power control unit coolant ..... 590
Capacity................................ 721
Checking............................... 590
Preparing and checking before winter ...................... 491
Radiator ................................ 592
Power outlets ........................... 540
Power sources ......................... 128
Power steering (Electric Power Steering system) ....... 486 Function ................................ 486
Warning light......................... 661
Power switch ........................... 332 Auto power off function ......... 334
Changing the power
switch modes ..................... 334
If your vehicle has to be
stopped in an emergency ... 651
Starting the hybrid system .... 332
Power windows ....................... 308
Catch protection function ...... 309
Door lock linked window operation ............................ 309
Jam protection function ........ 309
Operation .............................. 308
Window lock switch .............. 308
Pre-Collision System (PCS).... 377
Enabling/disabling the system .......... ...................... 381
Function ................................ 377
Warning light......................... 661
P

783Alphabetical index
PRIUS PRIME_OM_OM47D13U_(U)
Radar cruise control (dynamic radar cruise
control with full-speed
range) ..................................... 399
Radiator .................................... 592
Radio
*
Rear passengers’ seat belt reminder light ........................ 663
Rear seat .................................. 297
Rear side marker lights ........... 346 Light switch ........................... 346
Replacing light bulbs............. 646
Rear turn signal lights............. 344 Replacing light bulbs............. 646
Turn signal lever ................... 344
Rear view mirror Inside rear view mirror .......... 304
Outside rear view mirrors...... 306
Rear view monitor system
*
Rear window defogger .... 500, 511
Refueling .................................. 364 Capacity ................................ 718
Fuel types ............................. 718
Opening the fuel tank cap ..... 366
When the fuel filler door cannot be opened............... 367
Regenerative braking ................ 92
Remote Air Conditioning
System ................................... 518
Replacing
Electronic key battery ........... 633
Fuses .................................... 636
Light bulbs ............................ 641
Tires ...................................... 615
Wiper rubber ......................... 630
Reporting safety defects
for U.S. owners ...................... 752
Resetting the message indicating maintenance is
required .................................. 574
Road accident cautions .......... 100 S-APGS (Simple Advanced
Parking Guidance
System) .................................. 451
S-FLOW mode.................. 497, 509
Safety Connect .......................... 75
Seat belts ................................... 30 Adjusting the seat belt ............ 31
Automatic Locking Retractor .............................. 31
Child restra int system
installation ............................ 60
Cleaning and maintaining the seat belt........................ 570
Emergency Locking
Retractor .............................. 31
How to wear your seat belt ..... 30
How your child should wear the seat belt.......................... 32
Pregnant women, proper seat belt use ......................... 33
Reminder light and buzzer.... 662
Seat belt extender .................. 32
Seat belt instructions for Canadian owners ............... 753
Seat belt pretensioners........... 31
SRS warning light ................. 661
Seat heaters ............................. 522
Seating capacity ...................... 329
Seats ................................. 295, 297 Adjustment............................ 295
Adjustment precautions ........ 296
Child seats/child restraint system installation . ............... 60
Cleaning ............................... 567
Front seats............................ 295
Head restraint ....................... 299
Properly sitting in the seat ...... 28
Rear seats ............................ 297
Seat heaters ......................... 522
RS
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.