2010 TOYOTA 4RUNNER Owners Manual

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Wireless remote control/electronic key batter y
Replace the battery with a new one if it is depleted.
■You will need the following items:
●Flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart key sys-
tem), or CR1632 (vehicles with a smart key system)
■ Replacing the battery (vehicles without a smart key system)
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
Remove the module.
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.
STEP 1
STEP 2
STEP 3

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■
Replacing the battery (vehicles with a smart key system)
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP 1
STEP 2
STEP 3

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■Use a CR2016 (vehicles without a smart key system) or CR1632 (vehi-
cles with a smart key system) lithium battery
● Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The smart key system and wireless remote control will not function prop-
erly.
● The operational range will be reduced.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child, they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
● Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other component inside the remote control.
● Do not bend either of the battery terminals.

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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 without a smart key system
Turn the engine switch off.
Vehicles with a smart key system
Turn the “ENGINE START STOP” switch off.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid
off.
Driver’s side instrument panel Remove the lid.STEP 1
STEP 2
CTH43AS123
CTH43AS028

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After a system failure, see “Fuse layout and amperage rat-
ings” (P. 535) for details about which fuse to check.
Remove the fuse.
Only type A fuse can be
removed using the pull-out
tool.
Check if the fuse is blown.
Ty p e A
Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e BNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
STEP 3
STEP 4
CTH43AS029
STEP 5
CTH43AS030
CTH43AS031

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Ty p e C
Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e DNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e ENormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
CTH43AS073
CTH43AS074
CTH43AS075

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Ty p e FNormal fuse
Blown fuse
Contact your Toyota dealer.
CTH43AS076

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Fuse layout and amperage ratings
■ Engine compartment
FuseAmpereCircuit
1PTC HTR NO.330 A
PTC heater
2DEF30 ARear window defogger
3DEICER 20 A
Windshield wiper de-icer
4PTC HTR NO.230 APTC heater
5SUB BATT30 ATrailer sub battery
6PTC HTR NO.150 A
PTC heater
7MIR HTR10 AOutside rear view mirror defog-
gers
8TOWING TAIL30 A
Trailer tail light
9A/C COMP10 AAir conditioning system
10STOP10 A
Stop/tail lights
11IG220 AINJ, IGN, GAUGE fuses
12HORN10 AHorn(s)
13EFI 25 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
14A/F20 A
A/F sensor
CTH43AS079