radiator cap TOYOTA PRIUS PRIME 2021 Owners Manual (in English)

600
PRIUS PRIME_OM_OM47D71U_(U)
7-3. Do-it-yourself maintenance
Engine compartment
IO73PH112
Engine coolant reservoir
(P. 604)
Fuse boxes (P. 650)
Engine oil level dipstick
(P. 601)
Engine oil filler cap (P. 602)
Brake fluid reservoir
(P. 610)Washer fluid tank (P. 612)
12-volt battery (P. 607)
Power control unit coolant
reservoir (P. 604)
Radiator (P. 606)
Condenser (P. 606)
Electric cooling fans1
2
3
4
5
6
7
8
9
10
11

PRIUS PRIME_OM_OM47D71U_(U)
6057-3. 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-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% 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 coolant 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 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 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 it from damaging parts or paint.

798Alphabetical index
PRIUS PRIME_OM_OM47D71U_(U)
P position switch ..................... 346
Panic mode .............................. 277
Parking assist sensors
Intuitive parking assist .......... 445
Parking Support Brake
function ............................... 455
S-APGS (Simple Advanced
Parking Guidance
System) .............................. 467
Parking brake ........................... 352
Operation .............................. 352
Parking brake engaged
warning buzzer ................... 352
Parking lights ........................... 353
Light switch ........................... 353
Replacing light bulbs............. 660
Parking lock ............................. 346
Parking Support Brake
function .................................. 455
PCS (Pre-Collision System) .... 384
Enabling/disabling the
system ................................ 388
Function ................................ 384
Warning light ......................... 675
Personal lights ......................... 541
Switch ................................... 542
Wattage ................................ 738
Plug-in hybrid system ............... 86
Driving tips ............................ 105
EV auto mode ......................... 87
EV driving range ................... 108
EV mode ................................. 87
EV/HV mode selection
switch ................................... 90
Features.................................. 86
How to charge....................... 146
HV mode ................................. 87
Hybrid battery (traction
battery) charge mode ........... 87Power control unit coolant ..... 604
Capacity................................ 735
Checking............................... 604
Preparing and checking
before winter ...................... 507
Radiator ................................ 606
Power outlets ........................... 554
Power sources ......................... 131
Power steering (Electric
Power Steering)..................... 502
Function ................................ 502
Warning light......................... 675
Power switch ........................... 338
Auto power off function ......... 340
Changing the power
switch modes ..................... 340
If your vehicle has to be
stopped in an emergency ... 665
Starting the hybrid system .... 338
Power windows ....................... 314
Catch protection function ...... 315
Door lock linked window
operation ............................ 315
Jam protection function ........ 315
Operation .............................. 314
Window lock switch .............. 314
Pre-Collision System (PCS).... 384
Enabling/disabling the
system ................................ 388
Function ................................ 384
Warning light......................... 675
P

799Alphabetical index
PRIUS PRIME_OM_OM47D71U_(U)
Radar cruise control
Dynamic radar cruise control
with full-speed range .......... 414
Radiator .................................... 606
Radio
*
RCTA (Rear Cross Traffic
Alert) ....................................... 440
Blind Spot Monitor
function ............................... 437
Rear Cross Traffic Alert
function ............................... 440
Rear Cross Traffic Alert
(RCTA) .................................... 440
Blind Spot Monitor
function ............................... 437
Rear Cross Traffic Alert
function ............................... 440
Rear passengers’ seat belt
reminder light ........................ 677
Rear seat .................................. 303
Rear side marker lights ........... 353
Light switch ........................... 353
Replacing light bulbs............. 660
Rear turn signal lights............. 351
Replacing light bulbs............. 660
Turn signal lever ................... 351
Rear view mirror
Inside rear view mirror .......... 310
Outside rear view mirrors...... 312
Rear view monitor system
*
Rear window defogger .... 516, 527
Refueling .................................. 371
Capacity ................................ 732
Fuel types ............................. 732
Opening the fuel tank cap ..... 373
When the fuel filler door
cannot be opened............... 374
Regenerative braking ................ 94
Remote Air Conditioning
System ................................... 535Replacing
Electronic key battery ........... 647
Fuses .................................... 650
Light bulbs ............................ 655
Tires...................................... 629
Wiper insert .......................... 644
Reporting safety defects
for U.S. owners...................... 768
Resetting the message
indicating maintenance is
required.................................. 588
Road accident cautions .......... 102
Road Sign Assist (RSA) .......... 410
RSA (Road Sign Assist) ......... 410
S-APGS (Simple Advanced
Parking Guidance
System) .................................. 467
S-FLOW (Front seat
concentrated airflow
mode) ............................. 514, 526
Safety Connect .......................... 76
Seat back pockets ................... 548
Seat belts ................................... 30
Adjusting the seat belt ............ 31
Automatic Locking
Retractor (ALR) .................... 31
Child restraint system
installation ............................ 64
Cleaning and maintaining
the seat belt........................ 584
Emergency Locking
Retractor (ELR) .................... 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.... 677
Seat belt extender .................. 32
R
S
*: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or
“MULTIMEDIA OWNER’S MANUAL”.