2017 TOYOTA PRIUS C warning lights

2444-5. Using the driving support systems
PRIUS c_U (OM52J11U)■
Conditions in which functions may not operate properly
In the following situations, the front sensor may not detect white (yellow) lines
and various functions may not operate normally.
●There are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
● The vehicle is driven in an area without white (yellow) lines, such as in front
of a tollgate or checkpoint, or at an intersection, etc.
● The white (yellow) lines are cracked, or cat's eyes (reflective markers) or
stones are present.
● The white (yellow) lines cannot be seen or are difficult to see due to sand,
etc.
● The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
● The traffic lines are yellow (which may be more difficult to recognize than
lines that are white).
● The white (yellow) lines cross over a curb, etc.
● The vehicle is driven on a bright surface, such as concrete.
● The vehicle is driven on a surface that is bright due to reflected light, etc.
● The vehicle is driven in an area where the brightness changes suddenly,
such as at the entrances and exits of tunnels, etc.
● Light from the headlights of an oncoming vehicle, the sun, etc., enters the
camera.
● The vehicle is driven where the road diverges, merges, etc.
● The vehicle is driven on a slope.
● The vehicle is driven on a road which tilts left or right, or a winding road.
● The vehicle is driven on an unpaved or rough road.
● The vehicle is driven around a sharp curve.
● The traffic lane is excessively narrow or wide.
● The vehicle is extremely tilted due to carrying heavy luggage or having
improper tire pressure.
● The distance to the preceding vehicle is extremely short.
● The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).
● The headlight lenses are dirty and emit a faint amount of light at night, or the
beam axis has deviated.
● The vehicle has just changed lanes or crossed an intersection.
■ Warning messages
Warning messages are used to indicate a system malfunction or to inform t\
he
driver of the need for caution while driving. ( →P. 486)
■ Customization
→P. 106

2454-5. Using the driving support systems
4
Driving
PRIUS c_U (OM52J11U)
Push the lever away from you
with the headlight switch in the position.
Press the Automatic High
Beam switch.
The Automatic High Beam indica-
tor will come on when the head-
lights are turned on automatically
to indicate that the system is
active.
Automatic High Beam∗
∗: If equipped
The Automatic High Beam uses an in-vehicle front sensor to
assess the brightness of streetlights, the lights of vehicles
ahead etc., and automatically turns the high beam on or off as
necessary.
WARNING
■ Limitations of the Automatic High Beam
Do not rely on the Automatic High Beam. Always drive safely, taking care to
observe your surroundings and turning the high beam on or off manually if
necessary.
■ To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High Beam system
1
2

4547-3. Do-it-yourself maintenance
PRIUS c_U (OM52J11U)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. ( →P. 455)
● If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.
■ If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
● Never use a fuse of a higher amperage rating than that indicated, or use\
any other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
● Do not modify the fuses or fuse boxes.
■ Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring
near the fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your
Toyota dealer as soon as possible.

4637-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U (OM52J11U)
■LED light bulbs
The headlight low/high beam/daytime running lights, front fog lights (i\
f
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 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 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.

4778-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52J11U)
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light in red (warning buzzer)*1
• Low brake fluid
• Malfunction in the brake system
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Brake system warning light in yellow
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
→ Have the vehicle inspected by your Toyota dealer
immediately.

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)

590Alphabetical index
PRIUS c_U (OM52J11U)
Navigation system*
Noise from under vehicle............ 8
Odometer.................................... 99
OilEngine oil .............................. 535
Opener
Back door.............................. 135
Fuel filler door ....................... 217
Hood ..................................... 416
Outside rear view mirrors Adjusting and folding ............ 158
Defogger ............................... 376
Outside temperature display .................................... 391
Overheating, Hybrid
system .................................... 524 Parking brake........................... 203
Parking lights
Replacing light bulbs ............ 459
Switch ................................... 204
Wattage ................................ 540
PCS (Pre-Collision system) .... 227 PCS (Pre-Collision system) switch...... .............. 230
Warning light......................... 480
Personal lights Switch ................................... 384
Wattage ................................ 540
Power outlet ............................. 393
“POWER” switch ..................... 188
Power windows ....................... 160
Pre-Collision system (PCS) .... 227 PCS (Pre-Collision
system) switch...... .............. 230
Warning light......................... 480
N
O
P