2008 TOYOTA HIGHLANDER HYBRID light

437
4-3. Do-it-yourself maintenance
4
Maintenance and care
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 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 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 (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 burning, get 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.

442 4-3. Do-it-yourself maintenance
■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 cannot 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
about 20 minutes, the tire 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 Rating (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 Rating (GAWR), see the Certification Label.
(  P. 447, 547).

464 4-3. Do-it-yourself maintenance
24 ECU-B10 ASteering sensor, gauges and
meters, air conditioning system,
main body ECU, wireless remote
control, smart key system, power
back door, on-board diagnosis sys-
tem
25 DOME 10 AVanity lights, personal lights, inte-
rior light, gauges and meters, door
courtesy lights, power back door
26 AMP 15 A Audio system
27 TOWING 30 A Trailer lights
28 IG2 25 A INJ NO.1, INJ NO.2
29 STR LOCK 20 A Steering lock system
30 IGCT 30 AIGCT No.2, IGCT No.3, INV-W/P,
EFI NO.3
31 HAZ 15 A Turn signal lights
32 ABS NO.3 15 AElectronically controlled brake sys-
tem
33 ABS NO.2 10 AElectronically controlled brake sys-
tem
34 ABS NO.1 10 A Capacitor
35 OIL PMP 10 A Transaxle fluid cooling system
36 BATT FAN 15 A Hybrid system
37 G/H 10 AGlass hatch, multiplex communica-
tion system
38 DC/DC-S 10 A Hybrid system
39 AM2 7.5 A Multiplex communication system
40 H-LP LH 15 A Left-hand headlight (high beam)
41 H-LP RH 15 A Right-hand headlight (high beam)
42 H-LP LL 15 A Left-hand headlight (low beam)
FuseAmpereCircuit

465
4-3. Do-it-yourself maintenance
4
Maintenance and care
Type B (if equipped)
43 H-LP RL
15 A Right-hand headlight (low beam)
44 HORN 10 A Horn
45 EFI NO.1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, smart key system
46 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, electronic throttle control
system
47 A/F 20 A Air fuel ratio sensor
48 S-HORN 7.5 A Horn
FuseAmpereCircuit
1 INV-W/P 15 A Hybrid system
2 IGCT NO.2 7.5 A Hybrid system
3 A/C-D 10 A Air conditioning system
FuseAmpereCircuit

466 4-3. Do-it-yourself maintenance
■Under the instrument panel
Front side of the fuse block
Fuse block
FuseAmpereCircuit
1 P/SEAT 30 A Power seat
2 POWER 30 A Power windows
3 RR DOOR RH 25 A Power windows
4 RR DOOR LH 25 A Power windows
5 FR FOG 15 A Front fog lights
6 OBD 7.5 A On-board diagnosis system
7 FR DEF 25 A Windshield wiper de-icer
8 STOP 10 A Stop lights
9 DOOR NO.2 25 A Power windows
10 AM1 7.5 A Water pump 11 RR FOG 7.5 A No circuit

467
4-3. Do-it-yourself maintenance
4
Maintenance and care
12 FUEL OPN 7.5 A Fuel filler door opener
13 S/ROOF 30 A Electric moon roof
14 TAIL 15 A
Parking lights, tail lights, license
plate lights, front fog lights, trailer
lights
15 PANEL 7.5 A Glove box light, emergency flash-
ers, audio system, outside rear
view mirror defoggers, power door
lock system, seat heaters, rear
seat entertainment system, instru-
ment panel light control dial, elec-
tronic controlled transmission
switch, transmission, steering
switches
16 ECU IG NO.1 10 A Multiplex communication system,
electric moon roof, electronically
controlled transmission system,
power back door, seat heaters, tire
pressure warning system, elec-
tronic power steering, transmission
17 ECU IG NO.2 7.5 A VDIM
18 A/C NO.2 10 A Air conditioning system, FAN NO.1,
FAN NO.2
19 WASH 20 A Windshield wipers and washer
20 S-HTR 20 A Seat heaters
21 GAUGE NO.1 10 A Audio system, outside rear view
mirror defoggers, back-up lights,
charging system, emergency flash-
ers, traction control system, instru-
ment panel light control dial,
windshield wiper deicer
22 FR WIP 30 A Windshield wipers and washer
23 RR WIP 15 A Rear window wiper and washer
FuseAmpereCircuit

468 4-3. Do-it-yourself maintenance
24 IGN10 AMultiport fuel injection system/
sequential multiport fuel injection
system, steering lock system,
smart key system, SRS airbag sys-
tem
25 GAUGE NO.2 7.5 A Gauges and meters, rear view
monitor
26 ECU-ACCES-
SORY 7.5 APower rear view mirror, shift lock
system, smart key system
27 ACCESSORY
SOCK NO.1 10 A Power outlet
28 ACCESSORY
SOCK NO.2 20 A Power outlet
29 RADIO NO.2 7.5 A Audio system, rear seat entertain-
ment system, charging system,
interior lights, personal lights
30 MIR HTR 15 A Outside rear view mirror defoggers
FuseAmpereCircuit

469
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P. 470)
● If the replaced fuse blows again, have the vehicle inspected by your
Toyota dealer.
■ If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any
other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
● Do not modify fuses or the fuse box.
■ Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring
near the fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your
Toyota dealer as soon as possible.