2019 TOYOTA PRIUS PLUS radiator cap

3796-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
6
Maintenance and care
Engine compartment
■12-volt battery
P. 389
Engine coolant reservoir
(P. 385)
Engine oil level dipstick
(P. 381)
Engine oil filler cap
(P. 383)
Power control unit coolant
reservoir (P. 385)Fuse box (P. 419)
Radiator (P. 386)
Condenser (P. 386)
Electric cooling fans
Washer fluid tank (P. 387)1
2
3
4
5
6
7
8
9

3856-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
6
Maintenance and care
The coolant level is satisfactory if it is between the full (“FULL” or “F”)
and low (“LOW” or “L”) 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. 518)
■
Power control unit coolant reservoir
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F”
line. (P. 518)
■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.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -35C [-31F])
For more details about coolant, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
■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 any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer, test the cap and check for leaks in the
cooling system.
Coolant
1
2
3
1
2
3

3866-3. Do-it-yourself maintenance
PRIUS +_OM_OM47D30E_(EE)
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
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.
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, the electric cooling fans may automati-
cally start to run if the air conditioning 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.

561Alphabetical index
PRIUS +_OM_OM47D30E_(EE)
Navigation system*
Odometer .................................. 119
Oil
Engine oil .............................. 529
Opener
Fuel filler door ....................... 258
Hood ..................................... 375
Outside rear view mirrors ....... 206
Adjustment ............................ 206
Folding .................................. 206
Outside rear view mirror
defoggers............................ 335
Outside temperature
display .................................... 337
Overhead console.................... 349
Overheating .............................. 518
Overheating, Engine ................ 518
P position switch ..................... 234
Parking brake
Operation .............................. 240
Parking brake engaged
warning buzzer ................... 451
Parking lock ............................. 234
PCS (Pre-Crash Safety system)
Function ................................ 271
Warning light ......................... 446
Warning message ......... 463, 465Personal lights ......................... 342
Switch ................................... 343
Wattage ................................ 536
Pollen removal mode .............. 335
Power control unit coolant
Capacity ................................ 532
Checking ............................... 385
Preparing and checking
before winter....................... 327
Radiator ................................ 386
Power outlets ........................... 356
Power steering (Electric
Power Steering system) ....... 318
Warning light ......................... 445
Power switch............................ 224
Auto power off function ......... 228
Changing the power
switch modes...................... 227
If your vehicle has to be
stopped in an emergency ... 435
Starting the hybrid
system ................................ 224
Power switch light ................... 342
Power windows
Jam protection function......... 208
Operation .............................. 208
Window lock switch............... 208
Pre-Crash Safety system (PCS)
Function ................................ 271
Warning light ......................... 446
Warning message ......... 463, 465
N
O
P
*: Refer to the “Navigation and multimedia system Owner’s Manual”.

562Alphabetical index
PRIUS +_OM_OM47D30E_(EE)
Radar cruise control
(dynamic radar cruise
control) ................................... 299
Radiator .................................... 386
Radio
*
Rear door sunshades .............. 360
Rear fog light
Replacing light bulbs ............. 428
Switch ................................... 250
Wattage................................. 536
Rear passenger’s seat belt
reminder light ........................ 450
Rear seat........................... 191, 196
Adjustment .................... 191, 196
Second seats ........................ 191
Third seats ............................ 196
Rear sunshade ......................... 360
Rear turn signal lights
Replacing light bulbs ............. 428
Turn signal lever ................... 239
Wattage................................. 536
Rear view mirror
Inside rear view mirror .......... 204
Outside rear view mirrors ...... 206
Rear view monitor system
*
Rear window defogger ............ 335
Rear window wiper .................. 255
Refueling .................................. 256
Capacity ................................ 528
Fuel types ............................. 528
Opening the fuel tank cap ..... 258
Regenerative braking ................ 82
Replacing
Electronic key battery............ 417
Fuses .................................... 419
Light bulbs............................. 423
Tires .............................. 478, 492
Road accident cautions ............ 89Seat belts.................................... 38
Adjusting the seat belt ............ 41
Child restraint system
installation ............................ 68
Cleaning and maintaining
the seat belt........................ 368
Emergency Locking
Retractor............................... 42
How to wear your seat belt ..... 36
How your child should wear
the seat belt.......................... 42
Pregnant women, proper
seat belt use ......................... 44
Reminder light and buzzer .... 450
Seat belt pretensioners ........... 41
SRS warning light ................. 445
Seat heaters ............................. 341
Seats
Adjustment ............ 187, 191, 196
Adjustment precautions ........ 189
Child seats/child restraint
system installation .......... 59, 67
Cleaning................................ 367
Front seats ............................ 187
Head restraint ....................... 199
Properly sitting in the seat ...... 36
Seat heaters ......................... 341
Second seats ........................ 191
Third seats ............................ 196
RS