2012 TOYOTA PRIUS PLUS Head lights

449 4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS +_OM_OM47821E_(EE)Unplug the connector while
pressing the lock release.
Replace the light bulb, and install
the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb base.
Shake the bulb base gently to
check that it is not loose, turn the
headlights on once and visually
confirm that no light is leaking
through the mounting.
STEP 2
STEP 3
STEP 4

450 4-3. Do-it-yourself maintenance
PRIUS +_OM_OM47821E_(EE)Front position 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
STEP 2
STEP 3

456 4-3. Do-it-yourself maintenance
PRIUS +_OM_OM47821E_(EE)Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional.
Headlight low beams (LED type)
Stop lights
Tail lights
Side turn signal lights
High mounted stoplight
Daytime running lights
LED lights
The headlight low beams (LED type), stop lights, tail lights, high mounted
stoplight and daytime running lights consist of a number of LEDs. If any of
the LEDs burn out, take your vehicle to any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional to have the
light replaced.
Condensation build-up on the inside of the lens
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional for more information in the following situations.
Temporary condensation build-up on the inside of the headlight lens does
not indicate a malfunction.
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. 443

457 4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS +_OM_OM47821E_(EE)
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. Hold the
bulb by the plastic or metal portion.
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.
To prevent damage or fire
Make sure bulbs are fully seated and locked.

474 5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
*: If you continue to use the vehicle in this state, the light starts blinking with
buzzer sounds, and you will soon become unable to start the hybrid system.
Warning lightWarning light/Details

(If equipped)LED headlight warning light
Indicates a malfunction in the LED headlights
The LED headlights will not normally illuminate when
there is a malfunction, however it may be able to illumi-
nate depending on the nature of the problem.

(If equipped)Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight level-
ing system

(If equipped)
(yellow)Cruise control indicator
Indicates a malfunction in the cruise control/dynamic
radar cruise control

(If equipped)
(yellow)Radar cruise control indicator (warning buzzer)
Indicates a malfunction in the dynamic radar cruise con-
trol

516
5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following and perform the appropriate proce-
dure:
The hybrid system will not start even though the correct
starting procedure is being followed (P. 214)
One of the following may be the cause of the problem:
The electronic key may not be functioning properly.
*
(P. 519)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
There may be a malfunction in the immobilizer system.
*
(P. 143)
There may be a malfunction in the P position control system.
*
(P. 219, 473, 473)
*: It may not be possible to shift the shift position from P to other posi-
tion.
The interior lights and headlights 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. 522)
The 12-volt battery terminal connections may be loose or cor-
roded.

5
517 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)
Emergency start function
When 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 any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
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 battery terminals may be discon-
nected.
The 12-volt battery may be discharged. (P. 522)
Contact any authorized Toyota dealer or repairer, or another duly quali-
fied and equipped professional if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3

5
525 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
To prevent 12-volt battery discharge
Turn off the headlights and the audio system while the hybrid system is
off.
Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
When the 12-volt battery is removed or discharged
The hybrid system may not start. (P. 415)
If the 12-volt battery is depleted with the shift position in P, it will not be
possible to shift the shift position other than P. In this case, the vehicle
cannot be towed without lifting both front wheels because the front
wheels are locked by the parking lock. (P. 461)
When the 12-volt battery is reconnected, start the hybrid system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery recharges automatically while the hybrid system is oper-
ating.)