lights TOYOTA PRIUS C 2020 Repair Manual

4948-2. Steps to take in an emergency
PRIUS c_UIndicates 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.
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 power 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 (vehicles
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.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)

5188-2. Steps to take in an emergency
PRIUS c_U
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. 520)
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle. ( P. 221)
● Vehicles with immobilizer syste m: There may be a malfunction in
the immobilizer system. ( P. 8 8 )
● There may be a malfunction i n 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 circui t or a
blown fuse. However, depending on the type of malfunction, an
interim measure is available to start the hybrid system. (P. 519)
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 conn ections may be loose or corroded.
(  P. 431)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on
the situation. Check the followi ng and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 188, 192)
The interior lights and headlights are dim, or the horn does no t
sound or sounds at a low volume.

5198-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 522)
● One or both of the 12-volt battery terminals may be disconnecte d.
(  P. 431)
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to sta rt the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in case of emergency.
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power swi tch for about 15 seconds.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Hav e the vehicle inspected by your
Toyota dealer.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4

5258-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U
■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 s ystem is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic .
■ Precautions when the 12-volt batte ry is discharged (vehicles with a
smart key system)
● In some cases, it may not be possible to unlock the doors using the smart
key system immediately after the 12-volt battery has been disco nnected and
reconnected. Use the wireless remote control or the mechanical key to lock
or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
● The power switch mode is memorized by the vehicle. When the 12- volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If the power switch was in ACCESSORY or ON mode before the 12-volt bat-
tery was discharged, the audio system and/or air conditioning system may
operate when the 12-volt battery is reconnected.
■ When the 12-volt battery is removed or discharged
● Information stored in the ECU is cleared. When the 12-volt batt ery is
depleted, have the vehicle inspected at your Toyota dealer.
● Some systems may require initialization. ( P. 565)
■ When removing the 12-vo lt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact your
Toyota dealer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gr adually even when
the vehicle is not in use, due to natural discharge and the dra ining effects of
certain electrical appliances. If the vehicle is left for a lon g time, the 12-volt
battery may discharge, and the hybrid system may be unable to s tart. (The
12-volt battery recharges automatically while the hybrid system is operating.)

5419-1. Specifications
9
Vehicle specifications
PRIUS c_U
Ignition system
Spark plug
Make
GapDENSO FK16R-A8
0.03 in. (0.8 mm)
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system
12-volt battery
Open voltage at
68 F (20 C): 12.0 V or higher
If the voltage is lower than the standard value,
charge the battery.
(Voltage checked 20 minutes after the hybrid sys-
tem and all the lights are turned off)
Charging rates
Quick charge
Slow charge 15 A max.
5 A max.

5449-1. Specifications
PRIUS c_U
*: If equipped
Light bulbs
Light bulbsBulb No.WTy p e
ExteriorFront turn signal lights/
parking lights

28/8 B
License plate lights 5A
Back-up lights 16 A
Rear turn signal lights 21 B
InteriorInterior lights/personal
lights

5A
Luggage compartment
light
* 5A
A: Wedge base bulbs (clear) B: Wedge base bulbs (amber)

5639-2. Customization
9
Vehicle specifications
PRIUS c_U■
Door lock (P. 127, 136, 520)
*: Vehicles with a smart key system
■
Automatic light control system ( P. 210)
■Lights (P. 208)
FunctionDefault settingCustomized
setting
Unlocking using a key Driver's door
unlocked in one step, all doors
unlocked in two steps All doors unlocked
in one step. —O
Speed-detecting auto-
matic door lock function
*Off On O O
Opening driver's door
unlocks all doors Off
On O O
Shifting gears to P unlocks
all doors. On
Off O O
Shifting gears to position
other than P locks all
doors. On
Off O O
12
FunctionDefault settingCustomized set-
ting
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
Off
OO60 seconds
90 seconds
12
FunctionDefault settingCustomized setting
Daytime running light sys-
tem (except Canada) On Off O O
12

5649-2. Customization
PRIUS c_U■
Illumination (P. 385)
*1: Vehicles without a smart key system
*2: Vehicles with a smart key system
■
Seat belt reminder (P. 482)
■Automatic air c onditioning system (P. 3 7 6 )
FunctionDefault settingCustomized
setting
Time elapsed before lights
turn off15 seconds
Off
OO7.5 seconds
30 seconds
Operation when the doors
are unlockedOnOff—O
Operation after the power
switch is turned to the
“LOCK” position
*1OnOff—O
Operation after the power
switch is turned off
*2OnOff—O
Operation when you
approach the vehicle with
the electronic key on your
person
*2
OnOff—O
12
FunctionDefault settingCustomized setting
Vehicle speed linked seat
belt reminder buzzer On Off — O
12
FunctionDefault settingCustomized
setting
A/C auto switch operationOnOffOO
12

588Alphabetical index
PRIUS c_U
Back door ................................. 136
Back-up lightsReplacing light bulbs............. 461
Wattage ................................ 544
Battery
Checking ............................... 431
Hybrid battery (traction battery) ................... 81
If the vehicle 12-volt battery is discharged .......... 522
Preparing and checking
before winter....................... 274
Bluetooth
® audio
Bluetooth® audio................... 330
Portable player...................... 317
Set up ................................... 322
Using the Bluetooth
®
audio................................... 330
Bluetooth
® phone
Making a phone call .............. 335
Set up ................................... 323
Bottle holders .......................... 392
Brake Fluid ...................................... 542
Parking brake........................ 207
Brake assist ............................. 265
Break-in tips ............................. 174 Care
Exterior ................................. 400
Interior .................................. 403
Seat belts.............................. 406
Cargo capacity......................... 185
CD player.................................. 300
Chains ...................................... 275
Child-protectors ...................... 131
Child restraint system
Booster seats, installation....... 68
Convertible seats, installation ............................ 66
Front passenger occupant classification syst em ............ 52
Infant seat, definition .............. 61
Infant seats, installation .......... 65
Installing CRS with LATCH system ..................... 71
Installing CRS with seat belts .............................. 65
Installing CRS with top tether straps ................... 74
LATCH anchors ...................... 71
BC

591Alphabetical index
PRIUS c_U
Floor mat .................................... 26
FluidBrake .................................... 542
Washer ................................. 430
Fog lights
Replacing light bulbs............. 464
Switch ................................... 212
Front fog lights
Replacing light bulbs............. 464
Switch ................................... 212
Front passenger occupant
classification system .............. 52
Front passenger’s seat belt reminder light ................. 482
Front seats Adjustment ............................ 150
Front sensor............................. 226
Automatic High Beam ........... 226
LDA (Lane Departure Alert)........ 226
PCS (Pre-Collision System)........ 226
Precautions ........................... 227 Front side marker lights
Replacing light bulbs ............ 465
Switch ................................... 208
Wattage ................................ 544
Front turn signal lights
Replacing light bulbs ............ 460
Switch ................................... 206
Wattage ................................ 544
Fuel Capacity................................ 538
Fuel gauge.............................. 99
Information............................ 545
Refueling .............................. 221
Type...................................... 538
Fuel door .................................. 221
Fuel filler door ......................... 221
Fuses ........................................ 454
F