Page 547 of 624

5478-2. Steps to take in an emergency
PRIUS v_OM_OM47B23U_(U)
8
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from th e radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not operate in
freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
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Page 548 of 624
5488-2. Steps to take in an emergency
PRIUS v_OM_OM47B23U_(U)■
If the hybrid system overheat warning light comes on or the
warning message indicating over
heat is shown on the multi-
information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The coolant level is satisfactory if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
If water was added in an emer-
gency, have the vehicle
inspected at your Toyota dealer
as soon as possible.
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Page 621 of 624

621Alphabetical index
PRIUS v_OM_OM47B23U_(U)
TRAC (Traction Control)Function ................................ 248
VSC OFF switch ................... 250
Trip information ......................... 94
Trip meters ................................. 92
Troubleshooting ...................... 602
Turn signal lights Replacing light bulbs..... 478, 479
Turn signal lever ................... 189
Wattage ................................ 562
USB memory ............................ 304
USB port ................................... 277
Vanity lights Vanity lights .......................... 387
Wattage ................................ 562
Vanity mirrors .......................... 387
Vanity lights .......................... 387
Wattage ................................ 562
Vehicle data recordings ............ 10
Vehicle identification
number ................................... 555
Vehicle proximity notification system ................. 75
Vehicle Stability Control (VSC) ...................................... 248
Voice command system.......... 358
Microphone ........................... 324
Switches ............................... 337
VSC
(Vehicle Stabilit y Control) .... 248 Warning buzzers
Approach warning................. 221
Brake system ....... ................. 492
Downshifting ......................... 185
Driver’s seat belt reminder.... 496
Front passenger’s seat belt reminder ...................... 496
Lane departure ..................... 230
Open door............................. 495
Pre-collision warning ............ 255
Radar cruise control ............. 221
Seat belt reminder ................ 496
Warning lights ABS ...................................... 493
Automatic headlight
leveling system................... 495
Brake system ....... ................. 492
Charging system................... 492
Cruise control ....................... 495
Driver’s seat belt reminder ............................. 496
Electronic engine control system .......... ...................... 493
Electric power steering ......... 493
Front passenger’s seat belt reminder ...................... 496
Go to service ........................ 502
High coolant temperature ..... 495
Hybrid system ...... ................. 492
LED headlight ....................... 494
Low engine oil pressure........ 492
Low fuel level ........................ 496
Low hybrid battery
(traction battery) ................. 495
Maintenance required reminder ............................. 496
Malfunction indicator lamp .... 493
Master warning light ............. 496
U
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