Page 714 of 808

7148-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47E74U_(U)
■When opening the cover of the positive (+) battery terminal
P. 605
■ 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. 761)
■ 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.)
Page 732 of 808
732
PRIUS PRIME_OM_OM47E74U_(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 the above type may cause abnormal
noise or vibration, or ultimately damage the transmission of your vehicle.
Page 755 of 808
PRIUS PRIME_OM_OM47E74U_(U)
7559-2. Customization
9
Vehicle specifications
■Automatic light control system*1 ( P. 347)
*1: If equipped
*2: This function cannot be customized for vehicles sold in Canada .
■
Rain-sensing windshield wipers* ( P. 3 6 1 )
*: 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
Page 790 of 808

790Alphabetical index
PRIUS PRIME_OM_OM47E74U_(U)
Front seats ............................... 296Adjustment ............................ 296
Cleaning................................ 579
Correct driving posture ........... 28
Head restraints ..................... 300
Seat heaters ......................... 535
Front side marker lights.......... 347 Light switch ........................... 347
Replacing light bulbs............. 657
Front turn signal lights ........... 345 Replacing light bulbs............. 657
Turn signal lever ................... 345
Fuel ........................................... 365 Capacity ................................ 728
Fuel gauge ............................ 209
Information ............................ 735
Refueling............................... 365
Type ...................................... 728
Warning light ......................... 673
Fuel consumption.... 233, 264, 269
Average fuel consumption .... 233
Current fuel consumption...... 269
Fuel filler door.......................... 365
Opener .................................. 367
Refueling............................... 365
When the fuel filler door cannot be opened............... 368
Fuses ........................................ 647
Garage door opener ................ 564
Glove box ................................. 541 Hands-free system (for
cellular phone)
*
Head restraints ........................ 300
Head-up display....................... 253
Headlights ................................ 347
AHB (Automatic High Beam)................................. 352
Headlight aim................ 650, 777
Light switch ........................... 347
Replacing light bulbs ............ 657
Heated steering wheel ............ 535
Heaters
Automatic air conditioning system.... 508, 520
Heated steering wheel .......... 535
Hybrid battery (traction battery) ............................... 136
Outside rear view mirrors ........................ 512, 523
Seat heaters ......................... 535
High coolant temperature warning light.......................... 673
High mounted stoplight
Replacing.............................. 657
High-voltage components ........ 99
Hill-start assist control ........... 497
Hood ......................................... 595
Hooks Coat hooks ........................... 562
Grocery bag hook ................. 546
Retaining hooks (floor mat) .... 26
Horn .......................................... 303
HV mode ..................................... 87
G
H