2020 TOYOTA PRIUS PRIME headlights

6988-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47C77U_(U)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 703)
● One or both of the 12-volt battery terminals may be disconnecte d.
(  P. 595)
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 procedur e except in cases of emergency.
Set the parking brake.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
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
1
2
3

7058-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47C77U_(U)
8
When trouble arises
■When opening the cover of the positive (+) battery terminal
P. 595
■ 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 .
■ 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. 752)
■ 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.)

724
PRIUS PRIME_OM_OM47C77U_(U)
9-1. Specifications
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Toyota dealer.
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. (After charging
the battery, turn on the high beam head-
lights for 30 seconds with the power switch
off, and turn the headlights off.)
Charging rates5 A max.
Transmission
Fluid capacity*3.9 qt. (3.7 L, 3.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■ Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your ve hicle.

PRIUS PRIME_OM_OM47C77U_(U)
7479-2. Customization
9
Vehicle specifications
■Automatic light control system*1 ( P. 350)
*1: If equipped
*2: This function cannot be customized for vehicles sold in Canada .
■
Rain-sensing windshield wipers* (  P. 3 6 4 )
*: If equipped
■
Intuitive parking assist* (  P. 433)
*: If equipped
FunctionDefault
settingCustomized setting
Time elapsed before the
headlights turn off 30 secondsOff
–OO
60 seconds
90 seconds
Light sensor sensitivityLevel 0Level -2 to 2–OO
Daytime running lights*2OnOff–OO
123
FunctionDefault
settingCustomized setting
Wiper operation when the
wiper switch is in the
position
Rain-sensing operation
Intermittent operation
linked to vehi- cle speed
(with interval
adjuster)
––O
123
FunctionDefault settingCustomized setting
Detection distance of the front
center sensorsFarNear––O
Detection distance of the rear
center sensorsFarNear––O
Buzzer volume31 to 5––O
123

780Alphabetical index
PRIUS PRIME_OM_OM47C77U_(U)
Front seats ............................... 299Adjustment ............................ 299
Cleaning................................ 569
Correct driving posture ........... 28
Head restraints ..................... 303
Seat heaters ......................... 526
Front side marker lights.......... 350 Light switch ........................... 350
Replacing light bulbs............. 648
Front turn signal lights ........... 348 Replacing light bulbs............. 648
Turn signal lever ................... 348
Fuel ........................................... 368 Capacity ................................ 720
Fuel gauge ............................ 209
Information ............................ 727
Refueling............................... 368
Type ...................................... 720
Warning light ......................... 664
Fuel consumption.... 231, 263, 269
Average fuel consumption .... 231
Current fuel consumption...... 269
Fuel filler door.......................... 368
Opener .................................. 370
Refueling............................... 368
When the fuel filler door cannot be opened............... 371
Fuses ........................................ 638
Garage door opener ................ 555
Glove box ................................. 532 Hands-free system (for
cellular phone)
*
Head restraints ........................ 303
Head-up display....................... 251
Headlights ................................ 350
Automatic High Beam ........... 355
Headlight aim................ 641, 766
Light switch ........................... 350
Replacing light bulbs ............ 648
Heated steering wheel ............ 526
Heaters Automatic air conditioning system.... 500, 511
Heated steering wheel .......... 526
Hybrid battery (traction
battery) ............................... 135
Outside rear view
mirrors ........................ 504, 515
Seat heaters ......................... 526
High coolant temperature
warning light.......................... 664
High mounted stoplight Replacing.............................. 648
High-voltage components ........ 98
Hill-start assist control ........... 490
Hood ......................................... 585
Hooks Coat hooks ........................... 553
Grocery bag hook ................. 537
Retaining hooks (floor mat) .... 26
Horn .......................................... 306
HV mode ..................................... 87
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H