Page 147 of 624
1473-4. Adjusting the steering wheel and mirrors
3
Operation of each component
PRIUS v_OM_OM47B23U_(U)
Steering wheel
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
The horn may not sound if the steering wheel is not securely locked.
Adjustment procedure
1
2
Horn
Page 537 of 624

537
PRIUS v_OM_OM47B23U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If the hybrid system will not star t
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly.
* ( P. 539)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 80)
● There may be a malfunction in the immobilizer system.
* ( P. 8 3 )
● There may be a malfunction in the shift control system.
*
( P. 179, 494, 508)
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 538)
*: 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. 541)
● The 12-volt battery terminal con nections may be loose or corroded.
( P. 442)
Reasons for the hybrid system not starting vary depending on
the situation. Check the follo wing and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 174)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
Page 538 of 624

5388-2. Steps to take in an emergency
PRIUS v_OM_OM47B23U_(U)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 541)
● One or both of the 12-volt batter y terminals may be disconnected.
( P. 442)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in cases of emergency.
Set the parking brake.
Shift the shift position to P.
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. Have the vehicle inspected by your
Toyota dealer.
The interior lights and headlight s do not turn on, or the horn
does not sound.
Emergency start function
1
2
3
4
Page 613 of 624

613Alphabetical index
PRIUS v_OM_OM47B23U_(U)
High mounted stoplightReplacing .............................. 481
Hill-start assist control............ 249
Hood ......................................... 424
Hooks Cargo hooks ......................... 383
Retaining hooks (floor mat)..... 28
Horn .......................................... 147
Hybrid battery (traction battery)
Location .................................. 78
Specification ......................... 557
Hybrid battery (traction battery)
air intake vent .......................... 79
Hybrid system ............................ 74 Emergency shut off system .... 79
Energy monitor/consumption
screen......................... 102, 108
EV drive mode ...................... 181
High voltage components ....... 78
Hybrid System Indicator.......... 98
Hybrid system precautions ..... 78
Hybrid vehicle driving tips ..... 262
If the hybrid system will
not start .............................. 537
Overheating .......................... 546
Power switch......................... 174
Regenerative braking.............. 76
Starting the hybrid system .... 174
Vehicle proximity
notification system ................ 75
Hybrid System Indicator ........... 98
Hybrid transmission ................ 183 I/M test ...................................... 421
Identification
Engine .................................. 556
Vehicle .................................. 555
Ignition switch
(Power switch)....................... 174Auto power off function ......... 178
Changing the power switch modes ..................... 177
If your vehicle has to be stopped in an
emergency ......................... 485
Starting the hybrid system .... 174
Ignition switch light
(power switch light) .............. 375
Illuminated entry system ........ 377
Immobilizer system ................... 83
Indicators ................................... 86
Initialization Items to initialize ................... 585
Maintenance data ................. 416
Tire pressure warning system .......... ...................... 448
Inside rear view mirror ............ 149
Instrument panel light control ...................................... 94
Interior lights ........................... 375
Switch ........................... 376, 377
Wattage ................................ 562I