2012 TOYOTA AVALON ECU

4
Maintenance and care
457
4-3. Do-it-yourself maintenance
Exchange the light bulb, and
install the socket.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the socket.
After installing the socket, turn the
headlight low beams on once and
visually confirm that no light is
leaking through the mounting.
■
Headlight high beams and d aytime running lights (vehicles
with halogen headlights)
Turn the bulb base counterclock-
wise.
STEP3
STEP4
STEP1

458 4-3. Do-it-yourself maintenance
Unplug the connector while
pushing the lock release.
Exchange the light bulb, and
install the socket.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the socket.
After installing the socket, turn the
headlight high beams on once
and visually confirm that no light
is leaking through the mounting.
STEP2
STEP3
STEP4

460 4-3. Do-it-yourself maintenance
Exchange the light bulb, and
install the socket.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the socket.
After installing the socket, turn the
headlight high beams on once
and visually confirm that no light
is leaking through the mounting.
■Front fog lights
Remove the fender liner clip.
STEP4
STEP5
STEP1

462 4-3. Do-it-yourself maintenance
Turn and secure the socket and
plug the connector.
After installing the socket, turn the
fog lights on once and visually
confirm that no light is leaking
through the mounting.
■Front turn signal/parking lights
Remove the fender liner clip.
Partly remove the fender liner
and turn the bulb base counter-
clockwise.
STEP5
STEP1
STEP2

4
Maintenance and care
469
4-3. Do-it-yourself maintenance
CAUTION
■
Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately
after turning off the headlights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. Hold the
bulb by the plastic or metal portion.
If the bulb is scratched or dropped it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failing to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
● Do not take apart or repair the low beam discharge headlight bulbs, con-
nectors, power supply circuits, or related components.
Doing so could result in electric shock and death or serious injury.

486 5-2. Steps to take in an emergency
■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
■ Front passenger detect ion sensor and passenger seat belt reminder
If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash, even if a passenger is not
sitting in the seat.

5
When trouble arises
493
5-2. Steps to take in an emergency
Loosen the center fastener that
secures the spare tire.
Remove the spare tire cover.
Replacing a flat tire
Chock the tires.
STEP2
STEP3
STEP1
Flat tireWheel chock positions
Front Left-hand side Behind the rear right-hand side tire
Right-hand side Behind the rear left-hand side tire
Rear Left-hand side In front of the front right-hand side tire
Right-hand side In front of the front left-hand side tire

5
When trouble arises
497
5-2. Steps to take in an emergency
Firmly tighten each nut two or
three times in the order shown in
the illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
Reinstall the wheel ornament.
Stow the flat tire, tire jack and all tools.
STEP4
STEP5
■To store the jack
■After completing the tire change
The tire pressure warning system must be reset. (P. 422)
STEP6
To store the jack, align the hole of the
jack head with the vehicle hook. Turn
the jack joint until the jack base fits
securely with the vehicle body.
This prevents the jack from flying for-
ward during a collisio n or sudden stop.