2008 TOYOTA PRIUS key battery

49
1
1-3. Opening, closing and locking the doors and back door
Before driving
PRIUS_U_(L/O_0802)
Wireless remote control
■2-step unlocking function
When you push the button, the driver’s door is unlocked. Pushing the
button again within 3 seconds unlocks the other doors.
■ Operation indicator
A buzzer sounds and the emergency flashers flash to indicate that the doors
have been locked/unlocked. (Locked: Once; Unlocked: Twice)
■ Door lock buzzer
If a door is not fully closed, a buzzer sounds continuously if an attempt to
lock the door is made. Fully close the door to stop the buzzer, and lock the
vehicle once more.
■ Security feature
 P. 4 5
■ When the electronic key battery is fully depleted
 P. 396
The wireless remote control can be used to lock and unlock the vehi-
cle and the back door fr om outside the vehicle.
Locks all doors
Unlocks all doors
Sounds alarm
(push and hold) (P. 8 5 )

134 2-1. Driving procedures
PRIUS_U_(L/O_0802)
■If the hybrid system does not start
The hybrid system immobilizer system may not have been deactivated.
(P. 81)
■ If the “READY” light does not come on
If the “READY” light does not come on when you press the power switch with
the shift lever in “P” and the brake pedal pressed, contact your Toyota dealer
immediately.
■ When the “POWER” switch in dicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer immediately.
■ Auto power OFF function
The “POWER” switch will automatically turn OFF when left in ACCESSORY
mode for 1 hour or more.
■ Electronic key battery depletion
 P. 4 4
■ When the electronic key battery is discharged
 P. 396
■ Conditions affecting operation
 P. 4 2
■ Leak detection pump
Several hours after the engine is turned off, you may hear a sound coming
from underneath the luggage compartment for several minutes.
This is normal operation and does not indicate a malfunction.

Maintenance and care4
345
PRIUS_U_(L/O_0802)
4-1. Maintenance and care ............................... 346
Cleaning and protecting the vehicle’s exterior ............ 346
Cleaning and protecting the vehicle’s interior ............. 348
4-2. Maintenance ................... 351 Maintenance requirements .................. 351
General maintenance....... 353
Emission inspection and maintenance (I/M)
programs ........................ 356
4-3. Do-it-yourself maintenance ................. 357
Do-it-yourself service precautions .................... 357
Hood ................................ 361
Positioning a floor jack ..... 362
Engine compartment ........ 364
Tires ................................. 379
Tire inflation pressure ...... 388
Wheels ............................. 392
Air conditioning filter......... 394
Key battery ....................... 396
Checking and replacing fuses .............................. 398
Light bulbs........................ 407

396
4-3. Do-it-yourself maintenance
PRIUS_U_(L/O_0802)
Key batter y
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Small Phillips-hea d screwdriver
● Lithium battery (CR2032)
■ Replacing the battery
Take out the mechanical key.
Remove the cover.
Remove the battery cover
bolts, the battery cover and
depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP1
STEP2
STEP3

397
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(L/O_0802)
■
If the electronic key battery is discharged
The following symptoms may occur.
● The smart key system and wireless remote control will not function prop-
erly.
● The operational range is reduced.
■ Use a CR2032 lithium battery
● Batteries can be purchased at your Toyota dealer, jewelers, or camera
stores.
● Replace only with the same or equivalent type recommended by a Toy-
ota dealer.
● Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other components inside the electronic key.
● Do not bend the battery terminals.

404 4-3. Do-it-yourself maintenance
PRIUS_U_(L/O_0802)
*1: Vehicles with halogen headlights (low beam)
*2: Vehicles with discharge headlights (low beam)35 ABS-1 25 A Anti-lock brake system
36 ETCS 10 A Electronic throttle control system
37 BATT FAN 10 A Battery cooling fan
38 HAZ 10 A
Turn signal lights, emergency
flasher
39 DOME 15 A Audio system, interior lights,
Smart key system, gauge and
meter, turn signal lights, luggage
room light, clock
40 ABS MAIN3 15 A Anti-lock brake system
41 ABS MAIN2 10 A Anti-lock brake system
42 ABS MAIN1 10 A Anti-lock brake system
43 FR FOG 15 A Fog lights
44 CHS W/P 10 A CHS W/P
45 AMP 30 A Audio system
46 PTC HTR2 30 A PTC heater
47 PTC HTR1 30 A PTC heater
48 CDS FAN 30 A Electric cooling fan
FuseAmpereCircuit

When trouble arises5
415
PRIUS_U_(L/O_0802)
5-1. Essential information .... 416If your vehicle needs to be towed ............................. 416
If you think something is wrong ............................. 423
Event data recorder ......... 424
5-2. Steps to take in an emergency .................... 426
If a warning light turns on or a warning buzzer
sounds... ........................ 426
If you have a flat tire......... 438
If the hybrid system will not start ................................ 448
If you lose your keys ........ 449
If the electronic key does not operate properly....... 450
If the vehicle 12 volt battery is discharged .................. 451
If your vehicle overheats ....................... 456
If the vehicle becomes stuck .............................. 459

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.