Page 317 of 496
3176-3. Do-it-yourself maintenance
PRIUS +_OM_OM47888E_(EE)
6
Maintenance and care
Engine compar tment
■12-volt battery
→ P. 327
Engine coolant reservoir
(→ P. 323)
Engine oil level dipstick (→ P. 319)
Engine oil filler cap (→ P. 321)
Power control unit coolant
reservoir ( →P. 323) Fuse box (
→P. 353)
Radiator ( →P. 324)
Condenser ( →P. 324)
Electric cooling fans
Washer fluid tank ( →P. 325)1
2
3
4
5
6
7
8
9
Page 323 of 496

3236-3. Do-it-yourself maintenance
PRIUS +_OM_OM47888E_(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 reservoirReservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line. ( →P. 444)
■
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. 444)
■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 dealer or
repairer, or another duly qualified and equipped professional.
■ 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 dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
Coolant
1
2
3
1
2
3
Page 324 of 496

3246-3. Do-it-yourself maintenance
PRIUS +_OM_OM47888E_(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
dealer or repairer, or another duly qualified and equipped profes-
sional.
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, 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.
Page 487 of 496

487Alphabetical index
PRIUS +_OM_OM47888E_(EE)
Navigation system*
Odometer .................................. 111
OilEngine oil .............................. 455
Opener Fuel filler door ....................... 226
Hood ..................................... 313
Outside rear view mirrors ....... 184 Adjustment ............................ 184
Folding .................................. 184
Outside rear view mirror defoggers............................ 273
Outside temperature display .................................... 275
Overhead console.................... 287
Overheating .............................. 444
Overheating, Engine ................ 444 P position switch ..................... 209
Parking brake
Operation .............................. 214
Parking brake engaged warning buzzer ................... 382
Parking lock ............................. 209
PCS (Pre-Crash Safety system) Function ................................ 254
PCS switch ........................... 255
Warning light ......................... 378
Warning message ......... 391, 392
Personal lights ......................... 280 Switch ................................... 281
Wattage ................................ 462
Pollen removal mode .............. 273
Power control unit coolant
Capacity ................................ 458
Checking ............................... 323
Preparing and checking before winter....................... 265
Radiator ................................ 324
Power outlets ........................... 294
Power steering (Electric Power Steering system) ....... 248Warning light ......................... 377
N
O
P
*: Refer to the “Navigation and multimedia system Owner’s Manual”.
Page 488 of 496

488Alphabetical index
PRIUS +_OM_OM47888E_(EE)
Power switch ............................ 201Auto power off function ......... 203
Changing the power switch modes...................... 203
If your vehicle has to be
stopped in an emergency ... 369
Starting the hybrid system ................................ 201
Power switch light ................... 280
Power windows Jam protection function ......... 186
Operation .............................. 186
Window lock switch ............... 186
Pre-Crash Safety system (PCS) Function ................................ 254
PCS switch............................ 255
Warning light ......................... 378
Warning message ......... 391, 392
Radar cruise control (dynamic radar cruise
control) ................................... 231
Radiator .................................... 324
Radio
*
Rear door sunshades .............. 298
Rear fog light Replacing light bulbs............. 362
Switch ................................... 218
Wattage ................................ 462
Rear passenger’s seat belt reminder light ........................ 381
Rear seat .......................... 169, 174 Adjustment .................... 169, 174
Second seats ........................ 169
Third seats ............................ 174
Rear sunshade ......................... 298
Rear turn signal lights
Replacing light bulbs............. 362
Turn signal lever ................... 213
Wattage ................................ 462
Rear view mirror Inside rear view mirror .......... 182
Outside rear view mirrors...... 184
Rear view monitor system
*
Rear window defogger ............ 273
Rear window wiper .................. 223
Refueling .................................. 224 Capacity ................................ 455
Fuel types ............................. 455
Opening the fuel tank cap ..... 226
Regenerative braking ................ 82
Replacing Electronic key battery ........... 351
Fuses .................................... 353
Light bulbs ............................ 357
Tires .............................. 404, 418
Road accident cautions ............ 89R