Page 657 of 772
6577-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47C99E_(EE)
7
Maintenance and care
Reinsert the 3 clips to the upper portion of the cover.
Turn the clip clockwise to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.
Reinsert the 2 clips to the lower portion of the cover.
Attach the clip on the cover,
and then press the center
portion of the clip to lock.
9
1
2
3
10
Page 658 of 772

6587-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47C99E_(EE)■
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
●Headlights
●Daytime running lights
●Front position lights
●Front fog lights
●Front turn signal lights
●Side turn signal lights
●Rear turn signal lights
●Rear fog lights
●Tail lights
●Stop lights
●High mounted stoplight
●License plate lights
■LED lights
The lights other than the back-up lights each consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle to any authorized Toyota retailer
or Toyota authorized repairer, or any reliable repairer to have the light
replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the lens does not indicate a
malfunction. Contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer for more information in the following situa-
tions:
●Large drops of water have built up on the inside of the lens.
●Water has built up inside the light.
■When replacing light bulbs
P. 652
Page 659 of 772

6597-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47C99E_(EE)
7
Maintenance and care
WARNING
■Replacing light bulbs
● Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the light unit. This may
damage the back-up lights or cause condensation to build up on the lens.
● Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious injury due to electric shock.
● Do not replace the right-hand back-up light immediately after the vehicle
has been driven.
After the vehicle has been driven the exhaust pipe will be extremely hot,
and touching the exhaust pipe may result in burns.
● Use gloves and other protection to prevent injuries on vehicle parts.
There is the danger of being injured on the edges of parts.
■ To prevent damage or fire
● Make sure bulbs are fully seated and locked.
● Check the wattage of the bulb before installing to prevent heat damage.
Page 660 of 772
6607-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47C99E_(EE)
Page 661 of 772
661
8When trouble arises
PRIUS PHV_OM_OM47C99E_(EE)
8-1. Essential information
Emergency flashers ........... 662
If your vehicle has to
be stopped in an
emergency ....................... 663
8-2. Steps to take in an
emergency
If your vehicle needs
to be towed ...................... 664
If you think something is
wrong ............................... 670
If a warning light turns on
or a warning buzzer
sounds ............................. 671
If a warning message is
displayed ......................... 680
If you have a flat tire .......... 688
If the hybrid system will
not start............................ 706
If the electronic key does
not operate properly ........ 708
If the 12-volt battery is
discharged ....................... 712
If your vehicle
overheats ......................... 718
If the vehicle becomes
stuck ................................ 723
Page 662 of 772
6628-1. Essential information
PRIUS PHV_OM_OM47C99E_(EE)
Emergency flashers
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■ Emergency flashers
If the emergency flashers are used for a long time while the hybrid system is
not operating (while the “READY” indicato r is not illuminated), the 12-volt bat-
tery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.
Page 663 of 772

6638-1. Essential information
PRIUS PHV_OM_OM47C99E_(EE)
8
When trouble arises
If your vehicle has to be stopped in an
emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort
required to slow the vehicle.
Shift the shift position to N.
If the shift position is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
If the shift position cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To stop the hybrid system,
press and hold the power
switch for 2 consecutive sec-
onds or more, or press it briefly
3 times or more in succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop
the vehicle in the normal way, stop the vehicle using the follow-
ing procedure:
1
2
3
4
3
Press and hold for 2 seconds or
more, or press briefly 3 times or
more
4
WARNING
■ If the hybrid system has to be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel
heavier to turn. Decelerate as much as possible before turning off the hybrid
system.
5
Page 664 of 772

6648-2. Steps to take in an emergency
PRIUS PHV_OM_OM47C99E_(EE)
If your vehicle needs to be towed
In the following situations, it is not possible to be towed by another
vehicle using cables or chains, as the front wheels may be locked due
to the parking lock. Contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer or commercial towing ser-
vice.
● There is a malfunction in the shift control system. (P. 354, 686)
● There is a malfunction in the immobilizer system. (P. 7 5 )
● There is a malfunction in the smart entry & start system. (P. 708)
● The 12-volt battery is discharged. (P. 712)
The following may indicate a problem with your hybrid transmission.
Contact any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer or commercial towing service before towing.
● The hybrid system warning message is displayed and the vehicle
does not move.
● The vehicle makes an abnormal sound.
If towing is necessary, we recommend having your vehicle
towed by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer or commercial towing service,
using a wheel-lift type truck or flatbed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
Situations when it is not possible to be towed by another vehicle
Situations when it is necessary to contact dealers before towing