2012 TOYOTA PRIUS horn

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2-1. Driving proceduresDriving the vehicle............... 180
Power (ignition) switch ........ 192
EV drive mode .................... 199
Hybrid transmission ............ 202
Turn signal lever ................. 211
Parking brake ...................... 212
Horn .................................... 213
2-2. Instrument cluster Gauges and meters ............ 214
Indicators and warning lights ................................. 219
Multi-information display ..... 223
Head-up display .................. 243
2-3. Operating the lights and windshield wipers
Headlight switch .................. 250
Fog light switch ................... 256
Windshield wipers and washer .............................. 258
Rear window wiper and washer .............................. 262
Headlight cleaner switch ..... 265 2-4. Using other driving systems
Cruise control ..................... 266
Dynamic radar cruise control .............................. 270
LKA (Lane-Keeping Assist) .............................. 286
Driving assist systems ........ 296
Hill-start assist control ........ 301
PCS (Pre-Collision System) ............................ 303
2-5. Driving information Cargo and luggage ............. 311
Vehicle load limits............... 316
Winter driving tips ............... 317
Trailer towing ...................... 322
Dinghy towing ..................... 323
2When driving

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Pictorial indexInstrument panel
Headlight switch
Turn signal lever
Fog light switch

P. 250
P. 211
P. 256
Pre-collision braking off switch P. 304
Parking brake pedal P. 212
Fuel filler door opener
P. 131Tire pressure warning reset switch P. 439
Windshield wipers and
washer switch
Rear window wiper and
washer switch
P. 258
P. 262
Gauges and meters
Multi-information display P. 214
P. 223
Audio system*2 P. 347
Navigation system*1
SRS driver airbag
Horn
P. 140
P. 213
SRS knee airbag P. 140
Tilt and telescopic steering control lever P. 117
: If equipped
*1: Refer to “Navigation System Owner’s Manual”.
*2: Refer to “Display Audio System Owner’s Manual”.

When driving2
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2-1. Driving proceduresDriving the vehicle............ 180
Power (ignition) switch ..... 192
EV drive mode ................. 199
Hybrid transmission ......... 202
Turn signal lever .............. 211
Parking brake ................... 212
Horn ................................. 213
2-2. Instrument cluster Gauges and meters ......... 214
Indicators and warning lights .............................. 219
Multi-information display............................ 223
Head-up display ............... 243 2-3. Operating the lights and
windshield wipers
Headlight switch ............... 250
Fog light switch ................ 256
Windshield wipers and washer ........................... 258
Rear window wiper and washer ........................... 262
Headlight cleaner switch ............................. 265
2-4. Using other driving systems Cruise control ................... 266
Dynamic radar cruise control ............................ 270
LKA (Lane-Keeping Assist) ............................ 286
Driving assist systems ..... 296
Hill-start assist control ...... 301
PCS (Pre-Collision System).......................... 303
2-5. Driving information Cargo and luggage .......... 311
Vehicle load limits ............ 316
Winter driving tips ............ 317
Trailer towing ................... 322
Dinghy towing .................. 323

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2-1. Driving procedures
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When driving
Hor n
■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.
(P. 117)
To sound the horn, press on or
close to the mark.

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4-3. Do-it-yourself maintenance
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Maintenance and care
Fuse layout and amperage ratings
■ Engine compartment
FUSEAmpereCircuit
1 HTR 50A Air conditioning system
2 RDI 30A Electric cooling fans
3 CDS 30A Electric cooling fans
4 S-HORN 10A No circuit
5 ENG W/P 30A Cooling system
6 ABS MAIN
NO.2 7.5A Anti-lock brake system
7 H-LP CLN 30A Headlight cleaner
8 P-CON MTR 30A P position control system, trans-
mission
9 AMP NO.1 30A Audio system
10 IGCT 30A PCU, IGCT NO.2, IGCT NO.3
11 DC/DC-S 5A Inverter and converter
12 P CON MAIN 7.5A P position control system, P posi-
tion switch

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FUSEAmpereCircuit
13 AM2 7.5A Power management system
14 ECU-B2 7.5A Smart key system, hybrid system
15 MAYDAY 10A MAYDAY
16 ECU-B3 10A Air conditioning system
17 TURN & HAZ 10A Turn signal lights
18 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
19 ABS MAIN
NO.1 20A Anti-lock brake system
20 H-LP LH LO 15A Left-hand headlight (low beam)
21 P/I 2 40AP position control system, horn,
headlight low beams, back-up
lights
22 ABS MTR 1 30A Anti-lock brake system
23 ABS MTR 2 30A Anti-lock brake system
24 H-LP HI MAIN 20A Headlight high beams, daytime
running lights
25 DRL 7.5A Daytime running lights
26 AMP NO.2 30A Audio system, navigation system
27 P/I 1 60A IG2, EFI MAIN, BATT FAN
28 EPS 60A Electric power steering
29 H-LP RH LO 15A Right-hand headlight (low beam)
30 PCU 10A Inverter and converter
31 IGCT NO.2 10A Hybrid system, P position control
system, power management sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel
injection system

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5-2. Steps to take in an emergency
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following a nd perform the appropriate proce-
dure:
■ The hybrid system will not start even though the correct
starting procedure is being followed ( P. 192)
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.
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(  P. 541)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● There may be a malfunction in the immobilizer system.
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(  P. 135)
● There may be a malfunction in the P position control system.
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( P. 197, 509)
*: It may not be possible to shift the shift position from P to another
position.
■ The interior lights and headlights are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 543)
● The 12-volt battery terminal c onnections may be loose or cor-
roded.

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When trouble arises
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5-2. Steps to take in an emergency
Emergency start function
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:
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. Have the vehicle inspected by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One or both of the 12-volt ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 543)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
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STEP 3