2023 TOYOTA PRIUS radiator cap

5146-3. Do-it-yourself maintenance
PRIUS_OM_OM47F32E_(EE)
Engine compar tment
Engine coolant reservoir
( P. 518)
Fuse boxes ( P. 557)
Engine oil level dipstick
( P. 515)
Engine oil filler cap ( P. 516)
12-volt battery ( P. 521)
Power control unit coolant
reservoir ( P. 518)
Radiator ( P. 520)
Condenser ( P. 520)
Electric cooling fans
Washer fluid tank ( P. 526)
1
2
3
4
5
6
7
8
9
10

5196-3. Do-it-yourself maintenance
PRIUS_OM_OM47F32E_(EE)
6
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.
“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.
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.

696Alphabetical index
PRIUS_OM_OM47F32E_(EE)
P position switch ..................... 254
Panoramic view monitor
*
Parking assist sensors
Parking Support Brake
function ............................... 394
S-IPA (Simple Intelligent
Parking Assist System)....... 405
Toyota parking
assist-sensor ...................... 381
Parking brake ........................... 260
Operation .............................. 260
Parking brake engaged
warning buzzer ................... 260
Parking lock ............................. 254
Parking Support Brake
function .................................. 394
PCS (Pre-Collision System) .... 296
Enabling/disabling the
system ................................ 300
Function ................................ 296
Warning light ......................... 582
Personal lights ......................... 470
Switch ................................... 471
Wattage................................. 667
Power control unit coolant ..... 518
Capacity ................................ 662
Checking ............................... 518
Preparing and checking
before winter....................... 452
Radiator ................................ 520
Power outlets ........................... 486
Power steering (Electric
Power Steering) ..................... 442
Function ................................ 442
Warning light ......................... 581Power switch............................ 244
Auto power off function ......... 246
Changing the power
switch modes...................... 246
If your vehicle has to be
stopped in an emergency ... 569
Starting the hybrid system .... 244
Power windows........................ 210
Catch protection function ...... 211
Door lock linked window
operation ............................ 212
Jam protection function......... 211
Operation .............................. 210
Window lock switch............... 210
Pre-Collision System (PCS) .... 296
Enabling/disabling the
system ................................ 300
Function ................................ 296
Warning light ......................... 582
Radar cruise control
Dynamic radar cruise control
with full-speed range .......... 329
Radiator .................................... 520
Radio
*
RCTA (Rear Crossing Traffic
Alert) ....................................... 375
Blind Spot Monitor
function ............................... 372
Rear Crossing Traffic Alert
function ............................... 375
Rear Crossing Traffic Alert
(RCTA) .................................... 375
Blind Spot Monitor
function ............................... 372
Rear Crossing Traffic Alert
function ............................... 375
P
R