Page 391 of 508

3917-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
7
When trouble arises
(If equipped)
Hybrid system overheat warning light (warning buzzer)The hybrid system has overheated
This light may come on when driving under severe operat-
ing conditions, and the output of the hybrid system may
temporarily decrease in order to protect the system. (For
example, when driving up a long steep hill or driving up a
steep hill in reverse.)
→ Stop and check. ( →P. 457)
(If equipped)
Cruise control indicator (yellow indicator)
Indicates a malfunction in the cruise control
→ Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
(Only outer frame flashes)
(If equipped)
Low hybrid battery (traction battery) warning light
(warning buzzer)
Hybrid battery (traction battery) level becomes low
because the shift position is in N for long time
→ Because recharging is not possible when the shift
position is in N, shift the shift position to P when
parking the vehicle for a long time.
High coolant temperature warning light
Changes from a flashing to a solid light when the engine
coolant temperature increases
→ Immediately stop the vehicle in a safe place.
(→ P. 457)
Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight leveling
system
→ Have the vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional immediately.
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
→ Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 6.0 L (1.6
gal., 1.3 Imp.gal.) or less
→ Refuel the vehicle.
Warning lightWarning light/Details/Actions
Page 458 of 508

4587-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
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 the radiator or hoses.
The fans operate when the air condi tioning 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 any authorized
Toyota dealer or repairer, or another duly qualified and equipped
professional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
4
1
2
3
5
6
7
Page 459 of 508

4597-2. Steps to take in an emergency
PRIUS +_OM_OM47B24E_(EE)
7
When trouble arises
■If the hybrid system overheat warning light comes on or the
warning message indicating overheat is shown on the multi-
information displayStop 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
any authorized Toyota dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
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 any authorized
Toyota dealer or repairer, or
another duly qualified and
equipped professional as soon
as possible.
1
2
3
1
2
4
1
2
3
5
Page 504 of 508

504Alphabetical index
PRIUS +_OM_OM47B24E_(EE)
USB memory*
USB port*
Vanity lightsVanity lights........................... 302
Wattage................................. 474
Vanity mirrors .......................... 302 Vanity lights........................... 302
Wattage................................. 474
Vehicle identification number ................................... 465
Vehicle Stability Control (VSC)....................................... 256
VSC (Vehicle Stability Control) .................................. 256
Warning buzzers Approach warning ................. 246
Brake system ........................ 387
Downshifting ......................... 218
Driver’s seat belt reminder .... 392
Front passenger’s seat belt reminder ............................. 392
Open door ............................. 391
Pre-crash warning ................. 262
Radar cruise control .............. 246
Seat belt reminder................. 392 Warning lights
ABS....................................... 388
Automatic headlight leveling system ................................ 391
Brake system ........................ 387
Charging system ................... 387
Cruise control........................ 391
Driver’s seat belt reminder .... 392
Electronic engine control
system ................................ 388
Electric power steering ......... 388
Front passenger’s seat belt reminder ............................. 392
Go to service......................... 393
High coolant temperature ..... 391
Hybrid battery indicator ......... 390
Hybrid system ....................... 388
Hybrid system overheat ........ 391
LED headlight ....................... 390
Low engine oil pressure ........ 388
Low fuel level ........................ 391
Low hybrid battery (traction battery) ................. 391
Malfunction indicator lamp .... 388
Master warning light.............. 392
Open door ............................. 391
Parking lock system ...... 389, 390
P position request
indicator.............................. 390
PCS ...................................... 389
Rear passenger’s seat belt
reminder ............................. 392
Seat belt reminder light ......... 392
Slip indicator ......................... 389
SRS ...................................... 388
Tire pressure......................... 392
U
V
W