2014 TOYOTA PRIUS headlight

478 4-3. Do-it-yourself maintenance
PRIUS_OM_OM47857U_DVD_(U)
■Parking lights (halogen headlights)
Turn the bulb base counterclock-
wise.
Remove the light bulb.
When installing, reverse the steps listed.
STEP 1
ITO43P167
STEP 2
STEP 3

479
4-3. Do-it-yourself maintenance
PRIUS_OM_OM47857U_DVD_(U)
4
Maintenance and care
■
Front side marker lights
Turn the bulb base counterclockwise.
Vehicles with halogen headlights
Vehicles with LED headlights
Remove the light bulb.
When installing, reverse the steps listed.
STEP 1
ITO43P167
STEP 2
STEP 3

486 4-3. Do-it-yourself maintenance
PRIUS_OM_OM47857U_DVD_(U)
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.
● Headlight low beams (LED headlights)
● Parking lights (LED headlights)
● Stop lights
● Tail lights
● Rear side marker lights
● High mounted stoplight
● Daytime running lights (except for Canada)
■LED lights
The headlight low beams (LED headlights), parking lights (LED headlights),
stop lights, tail lights, rear side marker lights, high mounted stoplight and
daytime running lights (except for Canada) consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle to your Toyota dealer to have the
light replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does
not indicate a malfunction. Contact your Toyota dealer for more information
in the following situations:
● Large drops of water have built up on the inside of the lens.
● Water has built up inside the headlight.
■ When replacing light bulbs
P. 471

487
4-3. Do-it-yourself maintenance
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4
Maintenance and care
CAUTION
■
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 i\
t 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 headlight unit. This
may damage the headlights 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.
■ To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
503
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning lightWarning light/Details
(If equipped) Automatic headlight leve
ling system warning light
Indicates a malfunction in the automatic headlight level-
ing system
(Flashes)
(If equipped) Cruise control indicator
Indicates a malfunction in the cruise control/dynamic
radar cruise control
(Flashes)
(If equipped) Radar cruise control indicator
Indicates a malfunction in the dynamic radar cruise con-
trol

5
When trouble arises
515
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning messageDetails
(If equipped) Indicates a malfunction in the LED headlight system.
Indicates a malfunction in the P position control sys-
tem.
In this situation, there is a possibility that the parking
lock mechanism will not work.
When parking, park the vehicle on a flat surface and
apply the parking brake securely. Also, it may not be
possible to turn the “POWER” switch off. If this hap-
pens, applying the parking brake will enable the
switch to be turned off.
Indicates that the cooling performance of the hybrid
battery is low.

5
When trouble arises
545
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start even though the correct
starting procedure is being followed ( P. 194)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.
*
(  P. 548)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 4 0 )
● There may be a malfunction in the immobilizer system.
*
(  P. 138)
● There may be a malfunction in the P position control system.
*
( P. 199, 515)
*: It may not be possible to shift the shift position from P to other posi-
tion.
■ The interior lights and headlight s are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 550)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.

546 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Emergency start functionWhen the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the
“POWER” switch is functioning normally: Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One or both of the 12-volt ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 550)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3