2008 TOYOTA AVALON sensor

161
2-4. Using other
driving systems
2
When driving
AVALON_U_(L/O_0802)
CAUTION
■When the laser radar sensor may not be correctly detecting the vehicle
ahead
Apply the brakes as necessary when any of the following types of vehicles
are in front of you. 
As the sensor may not be able to correctly detect these types of vehicles,
the proximity alarm ( P. 157) will not be activated, and an accident may
result.
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving
● Vehicles with small rear ends (trailers with no load on board etc.)
● Motorcycles traveling in the same lane
■ Conditions under which the vehicle -to-vehicle distance control may
not function correctly
Apply the brakes as necessary in the following conditions as the laser radar
sensor may not be able to correctly detect vehicles ahead, and an accident
may result.
● When water or snow thrown up by the surrounding vehicles hinders the
functioning of the sensor
● When your vehicle is pointing upwards (caused by a heavy load in the
trunk etc.)
● When the road curves or when the lanes are narrow
● When steering wheel operation or your position in the lane is unstable
■ To ensure the laser radar sensor functions correctly
Do not do the following to the sensor or grille cover as doing so may cause
the sensor not to function correctly and could result in an accident.
● Stick or attach anything to them
● Leave them dirty
● Disassemble, subject them to strong shocks
● Modify or paint them
● Replace them with non-genuine parts

162 2-4. Using other driving systems
AVALON_U_(L/O_0802)
NOTICE
■Handling the laser radar sensor
Observe the following to ensure the cruise control system can function effec-
tively.
● Keep the sensor clean at all times.
Clean the sensor with a soft cloth so you do not mark or damage them.
● Do not subject the sensor or surrounding area to a strong impact. 
If the sensor moves even slightly off position, the system may malfunction.
If the sensor or surrounding area is subject to a strong impact, always
have the area inspected and adjusted by a Toyota dealer.
● Do not disassemble the sensor.
● Do not attach accessories or stickers to the sensor, surrounding area.

286 3-6. Other interior features
AVALON_U_(L/O_0802)
CAUTION
■While driving
Do not adjust the display. 
Be sure to adjust the display only when the vehicle is stopped.
■ When doing the circling calibration
Be sure to secure a wide space, and watch out for people and vehicles in the
neighborhood. Do not violate any local traffic rules while performing circling
calibration.
NOTICE
■To avoid the compass malfunctions
Do not place magnets or any metal objects near the inside rear view mirror. 
Doing this may cause a malfunction of the compass sensor.
■ To ensure normal operation of the compass
● Do not perform circling calibration of the compass in a place where the
earth’s magnetic field is subject to inte rference by artificial magnetic fields.
● During calibration, do not operate electric systems (moon roof, power win-
dows, etc.) as they may interfere with the calibration.

348 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
FuseAmpereCircuit
21 EFI No.1 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, fuel pump
22 HORN 10 A Horn
23 HEAD LH UPR 15 A Left-hand headlight (high beam)
24 HEAD RH UPR 15 A Right-hand headlight (high beam)
25 A/F 25 A Air fuel ratio sensor
26 WASHER 20 A Windshield washer
27 S-HORN 7.5 A Horn
28 DOME 7.5 A Gauges and meters, clock, front
personal lights, door courtesy
lights, garage door opener, rear
personal lights, trunk light
29 ECU-B 10 A Center display, multiplex

communication system
30 RAD No.1 15 A Audio system, center display,

navigation system
31 EFI No.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
32 STOP No.2 7.5 A Stop lights, high mounted

stoplight, vehicle stability control
system, anti-lock brake system
33 RADAR CC 7.5 A Vehicle stability control system
34 HEAD RH LWR 15 A Right-hand headlight (low beam)
35 HEAD LH LWR 15 A Left-hand headlight (low beam)

368
5-1. Essential information
AVALON_U_(L/O_0802)
Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a
near car crash event, this device may record some or all of the follow-
ing information:
● Engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● Front passenger’s occupant classification
● SRS airbag deployment data
● SRS airbag system diagnostic data
If your vehicle is equipped with a vehicle stability control (VSC) sys-
tem, its Electronic C ontrol Unit (ECU) may contain another EDR.
There are a variety of driving sit uations which include activating the
vehicle stability control (VSC) under which the VSC EDR will record
certain information. The VSC EDR may record some or all of the fol-
lowing information:
Your vehicle has computers that monitor and control certain aspects
of your vehicle. These computers assi st in driving and maintaining
optimal vehicle performance.
Besides storing data useful for tr oubleshooting, there is a system to
record data in a crash or a near car crash event. This is called an
Event Data Recorder (EDR).

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

378 5-2. Steps to take in an emergency
AVALON_U_(L/O_0802)
■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.
■
If the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmit-
ters are used.
●If the ID code on the tire pressure warning valves and transmitters is
not registered in the tire pressure warning computer.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or
higher.
The tire pressure warning system may be disabled in the following condi-
tions: 
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies
are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If there is a lot of snow or ice on the vehicle, in particular around the
wheels or wheel housings.
●If non-genuine Toyota wheels are used. (Even if you use Toyota
wheels, the tire pressu re warning system may not work properly with
some types of tires.)
●If tire chains are used.
●If the spare tire is in a location subject to poor radio wave signal
reception.
●If a large metallic object which can in terfere with signal reception is
put in the trunk.

431
6-2. Customization
6
Vehicle specifications
AVALON_U_(L/O_0802)
*: Vehicles sold outside Canada
ItemFunctionDefault settingCustomized
setting
Automatic
light control
system 
( P. 143) Light sensor sensitivity Level 3 Levels 1 to 5
Time elapsed before
headlights automati-
cally turn off after doors
are closed
60 seconds0 seconds
30 seconds
90 seconds
Daytime running light ON OFF
*