Page 353 of 476
353
4-3. Do-it-yourself maintenance
4
Maintenance and care
Key batter y
Replace the battery with a new one if it is discharged.
■You will need the following items:
●Flathead screwdriver (To prevent damage to the key, cover
the tip of the screwdriver with rag.)
● Small Phillips-hea d screwdriver
● Lithium battery CR1632 (vehicles with smart key system), or
CR2016 (vehicles withou t smart key system)
■ Replacing the battery (vehicles with smart key system)
Take out the mechanical key.
Remove the cover.
STEP1
STEP2
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354 4-3. Do-it-yourself maintenance
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
■Replacing the battery (vehicles without smart key system)
Remove the cover.
Remove the module.
STEP3
STEP1
STEP2
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355
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
If the key battery is discharged
The following symptoms may occur.
●The smart key system and wireless remote control will not function prop-
erly.
● The operational range is reduced.
■ Use a CR1632 (vehicles with smar t key system), or CR2016 (vehicles
without smart key system ) lithium battery
● Batteries can be purchased at your Toyota dealer, jewelers, or camera
stores.
● Replace only with the same or equivalent type recommended by your
Toyota dealer.
● Dispose of used batteries according to the local laws.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery.
Insert a new battery with the
“+” terminal facing up.
STEP3
Page 357 of 476
357
4-3. Do-it-yourself maintenance
4
Maintenance and care
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Vehicles with smart key system: Turn the “ENGINE START
STOP” switch OFF.
Vehicles without smart key system: Turn the engine switch
OFF.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid
off.
Under the driver’s side instrument panel Remove the lid.
After a system failure, see “Fuse layout and amperage rat-
ings” ( P. 360) for details about which fuse to check.STEP1
STEP2
STEP3
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361
4-3. Do-it-yourself maintenance
4
Maintenance and care
4 RR FOG
10 A No circuit
5 FR DEF 15 A No circuit
6 AM2 7.5 A Starting system
7 ALT-S 7.5 A Charging system
8 MAYDAY/TEL 7.5 A No circuit
9 E-ACM 10 A No circuit
10 ETCS 10 A Electronic throttle control system
11 HAZ 15 A Turn signal lights
12 IG2 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system, “GAUGE
NO.2” and “IGN” fuses
13 STR LOCK 20 A Steering lock system
14 DOME 10 AGauges and meters, vanity lights,
trunk light, engine switch light, door
courtesy lights, interior light, per-
sonal lights, clock, smart key sys-
tem
15 ECU-B NO.1 10 A Wireless remote control system,
front passenger occupant classifi-
cation system, main body ECU,
vehicle stability control system
16 RADIO NO.1 15 A Audio system, navigation system
17 DOOR NO.1 25 A Main body ECU
18 AMP 25 A Audio system
19 EFI MAIN 30 AMultiport fuel injection system/
sequential multiport fuel injection
system, electronic throttle control
system, “EFI NO.2”, and “EFI
NO.3” fuses
FuseAmpereCircuit
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362 4-3. Do-it-yourself maintenance
20 EFI NO.310 AMultiport fuel injection system/
sequential multiport fuel injection
system
21 EFI NO.2 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
22 S-HORN 7.5 A Horn
23 A/F 20 AMultiport fuel injection system/
sequential multiport fuel injection
system
24 MPX-B 10 A Gauges and meters
25 EFI NO.1 10 ATheft deterrent system, smart key
system, multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system, electronic throttle
control system
26 HORN 10 A Horns
27 H-LP(RL) 15 A Right-hand headlight (low beam)
28 H-LP(LL) 15 A Left-hand headlight (low beam)
29 H-LP(RH) 15 A Right-hand headlight (high beam)
30 H-LP(LH) 15 A Left-hand headlight (high beam)
31 HTR 50 A Air conditioning system
32 ABS NO.1 50 AAnti-lock brake system, vehicle sta-
bility control system, traction con-
trol system, brake assist system
33 FAN MAIN 50 A Electric cooling fans
34 ABS NO.2 30 AAnti-lock brake system, vehicle sta-
bility control system, traction con-
trol system, brake assist system
35 RR DEF 50 ARear window defogger, “MIR HTR”
fuse
36 RR PWR SEAT 30 A No circuit
FuseAmpereCircuit
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366 4-3. Do-it-yourself maintenance
24 INJ15 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system
25 IGN 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, theft deterrent system,
SRS airbag system, steering lock
system, front passenger occupant
classification system, smart key
system, electronic throttle control
system
26 GAUGE NO.2 7.5 A Gauges and meters, multi-informa-
tion display, clock
27 ECU-ACC 7.5 A Clock, main body ECU, shift lock
control system, outside rear view
mirror, smart key system
28 CIG 20 A Power outlet
29 PWR OUTLET 20 A Power outlet
30 RADIO NO.2 7.5 A Audio system, navigation system
31 MIR HTR 10 A Outside rear view mirror defoggers
32 POWER 30 A Power windows
33 P/SEAT 30 A Power seats
■ After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacing. ( P. 368)
● 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.
FuseAmpereCircuit
Page 373 of 476

When trouble arises5
373
5-1. Essential information .... 374If your vehicle needs to be towed ........................ 374
If you think something is wrong ......................... 377
Fuel pump shut off system ........................... 378
Event data recorder ......... 379 5-2. Steps to take in an
emergency .................... 381
If a warning light turns on or a warning buzzer
sounds... ...................... 381
If a warning message is displayed (vehicles with
multi-information
display) .......................... 391
If you have a flat tire......... 400
If the engine will not start ................................ 411
If the shift lever cannot be shifted from P (automatic
transmission) ................. 413
If you lose your keys ........ 414
If the electronic key does not operate properly
(vehicles with smart key
system) .......................... 415
If the battery is discharged ..................... 417
If your vehicle overheats ....................... 421
If the vehicle becomes stuck .............................. 424