2008 TOYOTA PRIUS horn

403
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(L/O_0802)
■
Engine compartment
FuseAmpereCircuit
23SPARE30 ASpare
24 SPARE 15 A Spare
25 DRL 7.5 A Daytime running light system
26 H-LP RH LO 10 A
*1
Right-hand headlight (low beam)
15 A*2
27 H-LP LH LO 10 A*1
Left.hand headlight (low beam)
15 A*2
28 H-LP HI RH 10 A Right-hand headlight (high beam)
29 H-LP HI LH 10 A Left-hand headlight (high beam)
30 EFI 15 A Multiport fuel injection system/
sequential multiport fuel injection
system
31 AM2 15 A “IGN” fuse, ignition system
32 HORN 10 A Horn
33 HEV 20 A Hybrid system
34 P CON MAIN 7.5 A Parking control system, hybrid
vehicle immobilizer system

448
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
If the hybrid system will not start
If the engine will not start even though correct starting procedures
are being followed (
P. 130), consider each of the following points.
■ The hybrid system will not start even when the starter motor
operates normally.
One of the following may be the cause of the problem.
●The electronic key battery may be discharged. ( P. 450)
● The engine may be flooded.
Try to restart the hybrid system once more following correct
starting procedures. (P. 130)
● There may be a malfunction in the immobilizer system.
( P. 8 1 )
■ The interior lights and headlight s 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. 451)
● The 12 volt battery terminal c onnections may be loose or cor-
roded.
■ 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 battery terminals may be discon-
nected.
● The 12 volt battery may be discharged. ( P. 451)
Contact your Toyota dealer if the problem cannot be repaired,
or if repair procedures are unknown.

506
PRIUS_U_(L/O_0802)
What to do if...
What to do if...
A tire puncturesP. 438If you have a flat tire
The engine does not start
P. 8 1Hybrid system immobilizer system
P. 448If the engine will not start
P. 451If the 12 volt battery is discharged
The high coolant temperature
warning light comes on.
Steam can be seen coming
from under the hood
P. 456If your vehicle overheats
The key is lostP. 449If you lose your keys
The 12 volt battery runs outP. 451If the 12 volt battery is discharged
The doors cannot be lockedP. 5 1Doors
The horn begins to soundP. 8 4Alarm
The vehicle is stuck in mud or
sandP. 459If the vehicle becomes stuck
The warning light or indicator
light comes onP. 426If the warning light turns on