2017 TOYOTA PRIUS C warning light

4888-2. Steps to take in an emergency
PRIUS c_U (OM52J11U)
(If equipped)
Indicates a malfunction in:
• The Automatic High Beam system (if equipped)
• The LED headlight system (if equipped)A buzzer also sounds.
→ Have the vehicle inspect ed by your Toyota
dealer.
(If equipped)
Indicates that:
• There is a high possibility of a frontal collision;
or
• The pre-collision braking function is operating A buzzer also sounds.
→ Check the vehicle's surroundings and take
evasive action if necessary.
(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 inspect ed by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the cruise control sys-
tem A buzzer also sounds.
→ Have the vehicle inspect ed by your Toyota
dealer.
Indicates a malfunction in the Brake Override
System A buzzer also sounds.
→ Have the vehicle inspect ed by your Toyota
dealer.
Warning messageDetails/Actions
(Flashes)

4918-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52J11U)
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
→Turn the high beam on.
(If equipped)
Indicates that, since the VSC (Vehicle Stability
Control) system was turned off, the pre-collision
braking and pre-collision brake assist are dis-
abled (The pre-collision warning function will be
operational)
→Turn the VSC on. ( →P. 239, 265)
(If equipped)
Indicates that the pre-collision system is disabled.
→ Have the vehicle inspect ed by your Toyota
dealer.
Indicates that the hybrid battery (traction battery)
is low A buzzer also sounds.
→ When stopping the vehicle for a long
period of time, shift the shift lever to P. The
hybrid battery (traction battery) cannot be
charged with the shift position in N.
Indicates that the hybrid battery (traction battery)
power has dropped because a long period of time
has elapsed after shifting the shift lever to N A buzzer also sounds.
→ Shift the shift lever to P and restart the
hybrid system when starting the vehicle.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

4928-2. Steps to take in an emergency
PRIUS c_U (OM52J11U)Indicates that the driver’s door was opened with
the shift position in N, D or B
A buzzer also sounds.
→ Shift the shift lever to P.
Indicates that the accelerator pedal is depressed
while the shift position is in N A buzzer also sounds.
→ Release the accelerator pedal and shift the
shift lever to D, B or R.
Indicates that the engine switch is turned to the
“ACC” or “LOCK” position (vehicles without a
smart key system) or the “POWER” switch is
turned to ACCESSORY mode or turned off (vehi-
cles with a smart key system) and the driver’s
door is opened while the lights are turned on A buzzer also sounds.
→ Turn the lights off.
Indicates that the EV drive mode is not avail-
able
*2
The reason the EV drive mode is not available
(the vehicle is idling, battery charge is low,
speed is higher than the EV drive mode operat-
ing speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
→ Use the EV drive mode when it becomes
available.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

4958-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52J11U)
Carrying out the corresponding action turns the message off.
After taking the specified steps to correct the suspected problem,
check that the warning message and light go off.
Other displayed message
Displayed messageDetails/Actions
Maintenance of the hybrid battery (traction battery)
cooling component is required The filter may be clogged, the air intake vent
may be blocked or there may be a gap in the
duct.
→ Have maintenance performed on the hybrid
battery (traction batter y) cooling component
at your Toyota dealer.
Have the malfunction repaired immediately. (vehicles with a
smart key system)
Interior
buzzerExterior buzzerWarning messageDetails/Actions
Once ⎯ The electronic key is not
detected when an attempt is
made to start the hybrid sys-
tem.
→
Start the hybrid system
with the electronic key
present.
(Flashes)

4998-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52J11U)
⎯⎯
Power was turned off due to the
automatic power off function.
→Next time when starting
the hybrid system,
increase the engine speed
slightly and maintain that
level for approximately 5
minutes to recharge the
12-volt-battery.
Once⎯
The electronic key has a low
battery.
→Replace the electronic key
battery. ( →P. 448)
Once⎯
The driver's door was opened
and closed with the “POWER”
switch turned off and then the
“POWER” switch was put in
ACCESSORY mode twice with-
out the hybrid system being
started.
→Press the “POWER”
switch while depressing
the brake pedal.
During a hybrid system starting
procedure in the event that the
electronic key was not function-
ing properly
(→P. 516), the “POWER” switch
was touched with the electronic
key.
→ Press the “POWER”
switch within 10 seconds
of the buzzer sounding.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)

5118-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52J11U)
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(→ P. 539)
■After completing the tire change
The tire pressure warning system must be reset. ( →P. 433)
■When using the compact spare tire
As the compact spare tire is not equipped with a tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you replace the
compact spare tire after the tire pressure warning light comes on, the light
remains on.
■If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the
vehicle.
Fit tire chains to the front tires.
1
2
3

5228-2. Steps to take in an emergency
PRIUS c_U (OM52J11U)
WARNING
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with anything other than the intended ter-
minal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ After recharging the 12-volt battery
Have the 12-volt battery inspected at your Toyota dealer as soon as possi-
ble.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
■ When replacing the 12-volt battery
→ P. 431
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, an\
d
other battery-related parts.
● Do not allow children near the 12-volt battery.

581What to do if... (Troubleshooting)
PRIUS c_U (OM52J11U)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not running) for a period of time.
(→P. 190)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( →P. 479)
●The brake system warning light is on
Is the parking brake released? (→P. 203)
Depending on the situation, other types of warning buzzer may also sound.
( →P. 477, 486)
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. ( →P. 486)
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 477, 486.
The “POWER” switch is turned off automatically
(vehicles with a smart key system)
A warning buzzer sounds during driving
A warning buzzer sounds when leaving the vehicle
(vehicles with a smart key system)
A warning light turns on or a warning message or indicator
is displayed