Page 357 of 496
3576-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41452U)■
Driver’s side instrument panel
FuseAmpereCircuit
1 H-LP LVL 7.5 A Automatic headlight leveling system
2 S/HTR RR 20 A Rear seat heater
3 ECU-ACC 5 A Outside rear view mirrors, glove box light,
air conditioning system, multiplex com-
munication system
4 RR P/OUTLET 15 A Power outlet
5 ECU-IG2 NO.2 7.5 A Multiplex communication system, smart
key system
6 ECU-IG2 NO.1 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system
7 A/B 10 A Front passenger occupant classification
system, SRS airbag system
8 FUEL DR LOCK 10 A Fuel filler door lock
9 D/L-AM1 20 A Multiplex communication system, power
door lock, trunk opener switch
10 PSB 30 A Pre-collision system 11 P/SEAT FR 30 A Power seats
12 S/ROOF 10 A Moon roof
13 A/C-B 7.5 A Air conditioning system 
         
        
        
     
        
        Page 358 of 496

3586-3. Do-it-yourself maintenance
AVALON (U)_(OM41452U)14 STOP 7.5 A
Stop/tail lights, multiport fuel injection
system/sequential multiport fuel injection
system, vehicle stability control system,
anti-lock brake system, electronic con-
trolled transmission, high mounted stop-
light, smart key system, shift lock control
system
15 AM1 7.5 A No circuit
16 4-WAY LUMBAR 7.5 A Power seat
17 ECU-B NO.2 10 A Smart key system, tire pressure warning
system, power window, front passenger
occupant classification system
18 OBD 10 A On-board diagnosis system
19 S/HTR&FAN F/L 10 A Seat heaters
20 S/HTR&FAN F/R 10 A Seat heaters
21 RADIO-ACC 5 A Audio system, navigation system
22 FR P/OUTLET 15 A Power outlet
23 WIPER-S 10 A Dynamic radar cruise control, pre-colli-
sion system
24 EPS-IG1 7.5 A Electric power steering
25 BKUP LP 7.5 A Back-up lights, multiport fuel injection
system/sequential multiport fuel injection
system, electronic controlled transmis-
sion
26 WIPER 25 A Windshield wipers and washer
27 A/C-IG1 7.5 A Air conditioning system
28 WASHER 10 A Windshield wipers and washer
29 DOOR R/L 20 A Rear left-hand power windows
30 DOOR F/L 20 A Power windows, outside rear view mir-
rors
31 DOOR R/R 20 A Rear right-hand power windows
32 DOOR F/R 20 A Power windows, outside rear view mir-
rors
FuseAmpereCircuit 
         
        
        
     
        
        Page 359 of 496

3596-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41452U)33 TAIL 10 A
Parking lights, side marker lights, stop/tail
lights, rear turn signal lights, back up
lights, license plate lights, fog lights
34 PANEL 10 A Switch illumination, air conditioning sys-
tem, glove box light, interior lights, per-
sonal lights, audio system, navigation
system, rear sunshade, seat heater,
Blind Spot Monitor, driving mode select
switch, steering wheel switch, ambient
light, trunk opener switch, vehicle stability
control off switch, emergency flashers,
outside rear view mirrors
35 ECU-IG1 NO.1 10 A Vehicle stability control system, electric
cooling fans, steering sensor, multiport
fuel injection system/sequential multiport
fuel injection system, charging system,
rear window defogger, outside rear view
mirror defoggers, rain-sensing windshield
wipers, Blind Spot Monitor, rear sun-
shade, dynamic radar cruise control, mul-
tiplex communication system, rear seat
heater, backup lights, fog lights, headlight
(high beam), daytime running light, pre-
collision system
36 ECU-IG1 NO.2 10 A Shift lock control system, seat heaters,
smart key system, tire pressure warning
system, wireless remote control, multi-
plex communication system, audio sys-
tem, navigation system, moon roof, auto
anti-glare inside rear view mirror, outside
rear view mirrors, pre-collision system,
air conditioning controls, rain-sensing
windshield wipers, starting system,
dynamic radar cruise control
FuseAmpereCircuit 
         
        
        
     
        
        Page 379 of 496
379
When trouble arises7
AVALON (U)_(OM41452U)7-1. Essential information
Emergency flashers .......... 380
If your vehicle has to be stopped in an 
emergency ...................... 381
7-2.  Steps to take in an  emergency
If your vehicle needs to  be towed ......................... 382
If you think something  is wrong .......................... 385
Fuel pump shut off  system ............................ 386
If a warning light turns  on or a warning buzzer 
sounds ............................ 387
If a warning message  is displayed ..................... 398
If you have a flat tire.......... 399
If the engine will not  start ................................. 412
If the shift lever cannot  be shifted from P............. 414
If the electronic key does  not operate properly........ 415
If the vehicle battery is  discharged ...................... 418
If your vehicle  overheats ........................ 422
If the vehicle becomes  stuck ............................... 425 
         
        
        
     
        
        Page 412 of 496

4127-2. Steps to take in an emergency
AVALON (U)_(OM41452U)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank. 
Refuel the vehicle.
● The engine may be flooded. 
Try to restart the engine again following correct starting procedures.
( P. 155)
● There may be a malfunction in the engine immobilizer system. 
( P. 66)
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 418)
● The battery terminal connections may be loose or corroded.
The engine starting system may be  malfunctioning due to an electrical
problem such as electronic key battery depletion or a blown fuse.
However, an interim measure is available to start the engine. 
(  P. 413)
If the engine will not star t
If the engine will not start even though correct starting proce-
dures are being followed ( P. 155), consider each of the follow-
ing points:
The engine will not start even  though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over 
         
        
        
     
        
        Page 415 of 496
4157-2. Steps to take in an emergency
7
When trouble arises
AVALON (U)_(OM41452U)■
Doors
Use the mechanical key 
(
 P. 88) in order to perform the
following operations:
Locks all the doors
Unlocks the door
Turning the key rearward
unlocks the driver’s door. Turn-
ing the key once again within 5
seconds unlocks the other
doors.
■
Tr u n k
 P.  1 1 4
If the electronic key does not operate 
properly
If communication between the electronic key and vehicle is
interrupted ( P. 100) or the electronic key cannot be used
because the battery is depleted, the smart key system and wire-
less remote control  cannot be used. In such cases, the doors
and trunk can be opened and the engine can be started by fol-
lowing the procedure below.
Locking and unlocking the doors and unlocking the trunk
1
2 
         
        
        
     
        
        Page 416 of 496
4167-2. Steps to take in an emergency
AVALON (U)_(OM41452U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
engine switch.
The engine switch will turn to IGNI-
TION ON mode.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
ACCESSORY mode.
Firmly depress the brake pedal.
A message indicating how to start the engine will be displayed on the
multi-information display.
Press the engine switch.
In the event that the engine still c annot be started, contact your Toyota
dealer.
Starting the engine
1
2
3
4 
         
        
        
     
        
        Page 417 of 496
4177-2. Steps to take in an emergency
7
When trouble arises
AVALON (U)_(OM41452U)
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when
stopping the engine.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 350)
■ Changing engine switch modes
Release the brake pedal and press the engine switch in step   above.
The engine does not start and modes will be changed each time the switch is
pressed.( P. 156)
■ When the electronic key does not work properly
●Make sure that the smart key system has not been deactivated in the cus-
tomization setting. If it is off, turn the function on. 
(Customizable features  P. 453)
● Check if battery-saving mode is set. If it is set, cancel the function. 
(P. 99)
3