Page 228 of 596

2284-5. Toyota Safety Sense C
PRIUS c_U
■If a warning message is displayed on the multi-information disp lay
A system may be temporarily unavailable or there may be a malfu nction in
the system.
● In the following situations, perform the actions specified in t he table. When
the normal operating conditions are detected, the warning messa ge will dis-
appear and the system will become operational.
If the warning message does not disappear, contact your Toyota dealer.
● If the warning message does not disappear even after the normal operating
conditions have returned and the vehicle has been driven for so me time,
contact your Toyota dealer.
SituationActions
When the area around the front
sensor is covered with dirt,
moisture (fogged up, covered
with condensation, ice, etc.), or
other foreign matterTo clean the part of the windshield in front
of the front sensor, use the windshield
wipers or the windshield defogger
( P. 376).
When the temperature around
the front sensor is outside of
the operational range, such as
when the vehicle is in the sun or
in an extremely cold environ-
ment
If the front sensor is hot, such as after the
vehicle is parked in the sun, use the air
conditioning system to decrease the tem-
perature around the front sensor.
If a sunshade was used when the vehi-
cle was parked, depending on its type,
the sunlight reflected from the surface
of the sunshade may cause the tem-
perature of the front sensor to become
excessively high.
If the front sensor is cold, such after the
vehicle is parked in an extremely cold
environment, use the air conditioning
system to increase the temperature
around the front sensor.
The area in front of the front
sensor is obstructed, such as
when the hood is open or a
sticker is attached to the part of
the windshield in front of the
front sensor.
Close the hood, remove the sticker, etc.
to clear the obstruction.
Page 463 of 596

4637-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U
■LED light bulbs
The headlights/daytime running lights, front fog lights (if equipped), side
marker lights, stop/tail lights and high mounted stoplight cons ist 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.
WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immedia tely 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 hand s. When it is
unavoidable to hold the glass portion, use and hold with a clea n 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. Fa ilure to do so
may result in heat damage, fire, or water entering the headligh t 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.
Page 527 of 596
5278-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
The coolant level is satisfac-
tory 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 fan operates and to check for
coolant leaks from t he radiator or hoses.
The fan operates when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fan is operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condi-
tioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fan is operating:
Have the vehicle inspected at the neare st Toyota dealer.
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Page 528 of 596
5288-2. Steps to take in an emergency
PRIUS c_U■
If the hybrid system overheat warning message 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 fan
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The coolant level is satisfac-
tory 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.
Start the hybrid system and chec k for the multi-information dis-
play.
If the message d oes not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the neare st Toyota dealer.
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