2009 TOYOTA PRIUS Light

373
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(OM47614U)
CAUTION
■
Chemicals in the 12 volt battery
The 12 volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce the risk
of death or serious injury, take the following precautions while working on or
near the 12 volt battery:
● Do not cause sparks by touching the 12 volt battery terminals with tools.
● Do not smoke or light a match near the 12 volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12 volt battery.
● Keep children away from the 12 volt battery.
■ Where to safety charge the 12 volt battery
Always charge the 12 volt battery in an open area. Do not charge the 12 volt
battery in a garage or closed room where there is not sufficient ventilation.
■ How to recharge the 12 volt battery
Only perform a slow charge (3.5 A or less). The 12 volt battery may explode
if charged at a quicker rate.
■ Emergency measures regarding electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or a burning sensation,
seek medical attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Follow with milk of magnesia,
beaten raw egg or vegetable oil. Get emergency medical attention immedi-
ately.

377
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(OM47614U)
■
How to initialize the tire pressure warning system
Park the vehicle in safe place and turn the “POWER” switch to
OFF mode.
While the vehicle is moving, in itialization is not performed.
Adjust the tire inflation pressure to the specified cold tire infla-
tion pressure level. ( P. 468)
Make sure to adjust the tire pressure to the specified cold tire
inflation pressure level. The ti re pressure warning system will
operate based on this pressure level.
Turn the “POWER” switch to ON mode.
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Wait for a few minutes with the ON mode, and then turn
“POWER” switch to OFF mode.
STEP1
STEP2
STEP3
SET
ITY43P018
STEP4
STEP5

378 4-3. Do-it-yourself maintenance
PRIUS_U_(OM47614U)
Registering ID codesThe tire pressure warning valve and transmitter is equipped with a
unique ID code. When replacing a tire pressure warning valve and
transmitter, it is necessary to regi ster the ID code of tire pressure
warning valve and transmitter. Have the ID code registered by your
Toyota dealer.
■When to replace your vehicle’s tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to
expose the fabric or bulges indicating internal damage
●A tire goes flat repeatedly or c annot be properly repaired due to the
size or location of a cut or other damage
If you are not sure, consult with your Toyota dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not
registered, the tire pre ssure warning system will not work properly. After
driving for about 20 minutes, the ti re pressure warning light comes on
after blinking for 1 minute to indicate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even
if they have seldom or never been used or damage is not obvious.
■If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
■Maximum load of tire
Check that the maximum load of the re placed tire is greater than 1/2 of
the Gross Axle Weight Ratings (GAWR) of either the front axle or the
rear axle, whichever is greater.
As for the maximum load of the tire, see the load limit at maximum cold
tire inflation pressure mentioned on the sidewall of the tire, and as for the
Gross Axle Weight Ratings (GAWR) , see the Certification Label.
(
P. 384, 473).

380 4-3. Do-it-yourself maintenance
PRIUS_U_(OM47614U)
■If you push the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire in flation pressure to the speci-
fied level and initialize the tire pressure warning system again.
■When the initialization of the tire pressure warning system has
failed
Initialization can be completed in a few minutes. However, in the follow-
ing cases, the settings have not b een recorded and the system will not
operate properly. If repeated attempts to record tire inflation pressure
settings are unsuccessful, have the vehicle inspected by your Toyota
dealer.
●When operating the tire pressure warning reset switch, the tire pres-
sure warning light does not flash 3 times.
●After carrying out the initialization procedure, the tire pressure warn-
ing light blinks for 1 minute then stays on after driving 20 minutes.
■Routine tire inflation pressure checks
The tire pressure warning system doe s not replace routine tire inflation
pressure checks. Make sure to check tire inflation pressure as part of
your routine of daily vehicle checks.

382 4-3. Do-it-yourself maintenance
PRIUS_U_(OM47614U)
CAUTION
■Tire pressure warning system operation
The tire pressure warning system may not provide warning immediately
if a tire bursts or if sudden air leakage occurs.
■When inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so
may cause damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may le ad to fatal or injury accidents.
●Do not mix tires of different makes, models, tread patterns or tread-
wear.
●Do not use tire sizes other than those recommended by Toyota.
●Do not mix radial, bias-belted, or bias-ply tires.
●Do not mix summer, all season and winter tires.
●Do not use tires that have been used on another vehicle.
●Do not use tires if you do not know how they were used previously.
■When initializing the tire pressure warning system
Do not push the tire pressure warnin g reset switch without first adjusting
the tire inflation pressure to the spec ified level. Otherwise, the tire pres-
sure warning light may not come on ev en if the tire inflation pressure is
low, or it may come on when the tire inflation pressure is actually normal.

397
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(OM47614U)
Fuse layout and amperage ratings
■ Driver’s side instrument panel
FuseAmpereCircuit
1PWR30 APower windows
2DEF 40 ARear window defogger
3M/HTR 15 AOutside rear view mirror heater
4WIP 30 AWindshield wiper
5RR WIP 15 ARear wiper
6WSH 20 AWasher
7 ECU-IG 7.5 ASmart key system, power win-
dows, touch screen, electric power
steering, theft deterrent system
8GAUGE 10 AGauge and meter, backup lights,
emergency flasher, power win-
dows
9OBD 7.5 AOn-board diagnosis system
10 STOP 7.5 AStop lights
11 D O O R 25 APower door lock system
12 ACC-B 25 A“POWER OUTLET”, “ACC” fuses

398 4-3. Do-it-yourself maintenance
PRIUS_U_(OM47614U)
13 ECU-B15 ATouch screen, power windows, air
conditioning system
14 AM1 7.5 AHybrid system
15 TAIL 10 ATail lights, license plates light,
parking lights
16 PANEL 7.5 ATouch screen, clock, audio sys-
tem, instrument panel lights
17 A/C (HTR) 10 AAir conditioning system
18 FR DOOR 20 APower windows
19 PWR OUTLET 15 APower outlet
20 ACC 7.5 AAudio system, touch screen, clock
21 PWR OUTLET
FR
15 A
Power outlet
22 IGN 7.5 AHybrid system, hybrid vehicle
immobilizer system, SRS airbags
FuseAmpereCircuit

399
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(OM47614U)
■
Engine compartment
FuseAmpereCircuit
23SPARE30 ASpare
24 SPARE 15 A Spare
25 DRL 7.5 A Daytime running light system
26 H-LP LO RH 10 A
*1
Right-hand headlight (low beam)
15 A*2
27 H-LP LO LH 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