Page 203 of 552

2034-3. Operating the lights and wipers
4
Driving
PRIUS c_U (OM52E68U)
■Daytime running light system
●To make your vehicle more visible to other drivers, the headlights turn on
automatically (at a reduced intensity) whenever the hybrid system is started
and the parking brake is released. Daytime running lights are not designed
for use at night.
For type A: Daytime running lights can be turned off by operating the switch.
● Compared to turning on the headlights, the daytime running light system
offers greater durability and consumes less electricity, so it can help improve
fuel economy.
■ Light reminder buzzer
Vehicles without a smart key system
A buzzer sounds when the engine switch is turned to the “LOCK” or “ACC”
position and the driver's door is opened while the lights are turned on.
Vehicles with a smart key system
A buzzer sounds when the “POWER” switch is turned off or turned to
ACCESSORY mode and the driver's door is opened while the lights are
turned on.
■ 12-volt battery-saving function
In the following conditions, the remaining lights will go off automatically after
20 minutes in order to prevent the vehicle battery from being discharged:
●The headlights and/or tail lights are on.
● The engine switch is turned to the “ACC” or “LOCK” position (vehicles with-
out a smart key system) or the “POWER” switch is turned to ACCESSORY
mode or turned off (vehicles with a smart key system).
This function will be canceled in any of the following situations:
● When the engine switch is turned to the “ON” position (vehicles without a
smart key system) or the “POWER” switch is turned to ON mode (vehicles
with a smart key system).
● When the light switch is operated.
● When the door is opened or closed.
Page 206 of 552
2064-3. Operating the lights and wipers
PRIUS c_U (OM52E68U)
Type BTurns the front fog lights
off
Turns the front fog lights
on
■Fog lights can be used when
The headlights are on in low beam.
1
2
Page 229 of 552

2294-5. Using the driving support systems
4
Driving
PRIUS c_U (OM52E68U)■
If you notice any symptoms
If you notice any of the following symptoms, refer to the likely cause
and the solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle
inspected by your Toyota dealer.
Things you should know
Likely causeSolution
The image is difficult to see
• The vehicle is in a dark area
• The temperature around the lens
is either high or low
• The outside temperature is low
• There are water droplets on the camera
• It is raining or humid
• Foreign matter (mud etc.) is adhering to the camera
• Sunlight or headlights are shining directly into the camera
• The vehicle is under fluorescent lights, sodium lights, mercury
lights etc.
If this happens due to these causes,
it does not indicate a malfunction.
Back up while visually checking the
vehicle’s surroundings. (Use the
monitor again once conditions have
been improved.)
To adjust the image on the rear view
monitor system screen. (P. 258)
The image is blurry
Dirt or foreign matter (such as water
droplets, snow, mud etc.) is adher-
ing to the camera.Flush the camera with a large quan-
tity of water. After that, rinse the
camera lens with water and wipe it
clean with a soft and wet cloth.
The image is out of alignment
The camera or surrounding area has
received a strong impact.Have the vehicle inspected by your
Toyota dealer.
The fixed guide lines are very far out of alignment
• The vehicle is tilted (there is a
heavy load on the vehicle, tire
pressure is low due to a tire punc-
ture, etc.)
• The vehicle is used on an incline.If this happens due to these causes,
it does not indicate a malfunction.
Back up while visually checking the
vehicle's surroundings.
The camera position is out of align-
ment.Have the vehicle inspected by your
Toyota dealer.
Page 258 of 552
2585-3. Setup (Multimedia system)
PRIUS c_U (OM52E68U)
Press the “SETUP” button.
Select “Display” on the “Setup” screen.Adjust screen contrast/bright-
ness
Adjust screen contrast/bright-
ness of the rear view monitor
camera
Changes to day mode.
Select “General” on the “Display Settings” screen.
Adjust the display as desired by selecting “+” or “-”.
When the headlights are turned on, the screen dims.
However, the screen can be switched to day mode by selecting “Day
Mode”.
The screen will stay in day mode when the headlights are turned on until
“Day Mode” is selected again.
Display settings
Settings are available for adjusting the contrast and brightness
of the screen.
Screen for display settings
1
2
1
2
3
Adjusting the screen contrast/brightness
Day mode
1
2
Page 427 of 552

4277-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U (OM52E68U)■
License plate light
Remove the cover.
Insert a properly sized screw-
driver into the hole of the cover,
and pry off the cover as shown
in the illustration.
To prevent damaging the vehi-
cle, wrap the tip of the screw-
driver with tape.
Remove the light bulb.
When installing, reverse the steps listed.
■Lights other than the above
If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.
●Headlight low/high beam/daytime running lights
● Front fog lights (if equipped)
● Side turn signal lights
● Stop/tail lights
● High mounted stoplight
■LED light bulbs
The headlight low/high beam/daytime running lights, front fog lights (if
equipped), stop/tail lights and high mounted stoplight 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 Toyo ta 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.
1
2
3
Page 428 of 552
4287-3. Do-it-yourself maintenance
PRIUS c_U (OM52E68U)
WARNING
■Replacing light bulbs
●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 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.
Page 450 of 552

4508-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
Warning message and warning buzzer list
Warning messageDetails/Actions
Indicates a malfunction in the hybrid systemA buzzer sounds in accordance with the warn-
ing message that is displayed.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates that the high engine coolant tempera-
ture is too high
Immediately stop the vehicle in a safe
place. ( P. 483)
Indicates abnormal engine oil pressure
The warning message is shown if the engine oil
pressure is too low.
A buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
(If equipped)
• Indicates a malfunction in the smart key system
• Indicates a malfunction in the steering lock sys-
tem
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the LED headlight sys-
tem If there is a malfunction, the LED headlights do
not turn on. However, depending on the mal-
function, they may turn on.
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(Flashes)
(Flashes)
Page 473 of 552

4738-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52E68U)
One of the following may be the cause of the problem:
●Vehicles with a smart key system: The electronic key may not be
functioning properly. ( P. 476)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 214)
● Vehicles with immobilizer system: There may be a malfunction in
the immobilizer system. ( P. 82)
● There may be a malfunction in the steering lock system.
● Vehicles with a smart key system: The hybrid system may be mal-
functioning due to an electrical problem such as an open circuit or a
blown fuse. However, depending on the type of malfunction, an
interim measure is available to start the hybrid system. ( P. 474)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 478)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 394)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 478)
● One or both of the 12-volt battery terminals may be disconnected.
( P. 394)
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
If the hybrid system will not star t
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 182, 186)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
The interior lights and headlights do not turn on, or the horn
does not sound.