headlights TOYOTA PRIUS 2022 Owner's Manual

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PRIUS_OM_OM47F01U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the hybrid system will not start
One of the following may be the cause of the problem:
● The electronic key may no t be functioning properly.
* ( P. 643)
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle. ( P. 91)
● There may be a malfunction in the immobilizer system.
* ( P. 9 6 )
● There may be a malfunction i n the shift control system.
*
(  P. 243, 606)
● The hybrid system may be malfunc tioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. H ow-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 642)
● There is a possibility that the t emperature of the hybrid battery
(traction battery) is extremely low (approximately below -22°F
[-30°C]). ( P. 91, 242)
*: It may not be possible to shift the shift position other than P.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 646)
● The 12-volt battery terminal connections may be loose or corrod ed.
(  P. 520)
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. 239)
The interior lights and headlights are dim, or the horn does no t
sound or sounds at a low volume.

6427-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. ( P. 646)
● One or both of the 12-volt battery terminals may be disconnecte d.
(  P. 520)
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

6487-2. Steps to take in an emergency
PRIUS_OM_OM47F01U_(U)
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
To install the engine cover, conduct the removal procedure in
reverse. After installing, check that the fixed pins are inserted
securely.
Once the hybrid system starts, have the vehicle inspected at yo ur
Toyota dealer as soon as possible.
■ When opening the cover of the positive (+) battery terminal
P. 521
■ 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. 697)
■ 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.)
7
8

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PRIUS_OM_OM47F01U_(U)
8-1. Specifications
*: The coolant capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Gasoline
engine6.6 qt. (6.2 L, 5.5 Imp.qt.)
Power
control unit1.5 qt. (1.4 L, 1.2 Imp.qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO FC16HR-CY9
Gap0.035 in. (0.9 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. (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.

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8-2. Customization
■Automatic light control system (P. 257)
*1: If equipped
*2: This function cannot be customized for vehicles sold in Canada .
■
Rain-sensing windshield wipers* (  P. 2 7 1 )
*: If equipped
FunctionDefault
settingCustomized setting
Time elapsed before the
headlights turn off 30 secondsOff
–OO
60 seconds
90 seconds
Light sensor sensitivity*1Level 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

726Alphabetical index
PRIUS_OM_OM47F01U_(U)
Front turn signal lights ........... 255Replacing light bulbs............. 572
Turn signal lever ................... 255
Fuel ........................................... 671 Capacity ................................ 663
Fuel gauge ............................ 116
Information ............................ 671
Refueling............................... 277
Type ...................................... 663
Warning light ......................... 590
Fuel consumption............ 133, 168
Fuel filler door.......................... 277
Opener .................................. 279
Refueling............................... 277
When the fuel filler door cannot be opened............... 280
Fuses ........................................ 558
Garage door opener ................ 482
Glove box ................................. 456
Hands-free system (for
cellular phone)
*
Head restraints ........................ 203
Head-up display ....................... 158
Headlights ................................ 257 AHB (Automatic High Beam) ................................. 262
Headlight aim ................ 561, 713
Light switch ........................... 257
Replacing light bulbs............. 572
Heated steering wheel............. 450
Heaters Automatic air conditioning
system ....... ................. 430, 440
Heated steering wheel .......... 450
Outside rear view mirrors ........................ 434, 444
Seat heaters ......................... 450 High coolant temperature
warning light.......................... 590
High mounted stoplight Replacing.............................. 572
High-voltage components ........ 89
Hill-start assist control ........... 416
Hood ......................................... 511
Hooks
Cargo hooks ......................... 462
Coat hooks ........................... 480
Grocery bag hook ................. 463
Retaining hooks (floor mat) .... 26
Horn .......................................... 206
Hybrid battery (tr action battery)
Air intake vent ......................... 90
Location .................................. 89
Specification ......................... 663
Hybrid battery (traction battery) air intake vent............ 90 Cleaning ............................... 546
Hybrid system............................ 84 Brake Override System ........ 223
Drive-Start Control ................ 224
Emergency shut off system .... 90
Energy monitor/consumption
screen ................ 127, 165, 170
EV drive mode ...................... 246
High voltage components ....... 89
Hybrid System Indicator ....... 129
Hybrid system precautions ..... 89
Hybrid vehicle driving tips ..... 422
If the hybrid system will not start .................................... 641
Overheating .......................... 652
Power switch ........................ 239
Regenerative braking ............. 87
Starting the hybrid system .... 239
Vehicle proximity notification system .......... ..................... ... 85
Hybrid System Indicator ......... 129
Hybrid transmission................ 249
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