2008 TOYOTA AVALON wiring

128 2-1. Driving procedures
AVALON_U_(L/O_0802)
NOTICE
■To prevent battery discharge
Do not leave the key in the “ACC” or “ON” position for long periods without
the engine running.
■ When starting the engine
● Do not crank for more than 30 seconds at a time. This may overheat the
starter and wiring systems.
● Do not race the cold engine.
● If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.

292 4-1. Maintenance and care
AVALON_U_(L/O_0802)
■Cleaning the inside of the rear window
Do not use glass cleaner to clean the rear window, as this may cause dam-
age to the rear window defogger heater wires. Use a cloth dampened with
lukewarm water to gently wipe the window clean. Wipe the window in
strokes running parallel to the heater wires.
■ Caring for leather areas
Toyota recommends cleaning the interior of the vehicle at least twice a year
to maintain the quality of the vehicle’s interior.
■ Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a
sponge or brush to apply the foam. Rub in overlapping circles. Do not apply
water. The excellent results are obtained by keeping the carpet as dry as
possible.
■ Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also
check the belts periodically for excessive wear, fraying or cuts.
CAUTION
■Water in the vehicle
● Be careful not to splash or spill liquid on the floor.
● Do not get any of the SRS components or wiring in the vehicle interior wet. 
( P. 8 3 ) 
Electrical malfunction may cause the airbags to deploy or not function
properly, resulting in death or serious injury.

352 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
■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. 355)
● If the replaced fuse blows again, have the vehicle inspected by your Toy-
ota 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.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Toy-
ota dealer.

5
When trouble arises
377
5-2. Steps to take in an emergency
AVALON_U_(L/O_0802)
■
If the malfunction indicator lamp comes on while driving
First check the following:
● Is your vehicle low on gas? 
If it is, refuel the vehicle immediately.
● Is the fuel tank cap loose? 
If it is, tighten it securely.
The light will go off after taking several driving trips. 
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.
■ SRS warning light
This warning light system monitors the following:
● The airbag sensor assembly
● Front airbag sensors
● The curtain shield airbag sensors
● The side and curtain shield airbag sensor assemblies
● The driver’s seat position sensor
● Driver’s seat belt buckle switch
● The front passenger occupant classification ECU
● The pressure sensor
● The belt tension sensor
● “AIR BAG ON” and “AIR BA G OFF” indicator lights
● Front passenger’s seat belt buckle switch
● The inflators
● The warning light
● The interconnecting wiring and power sources