Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
Vehicles without a smart key system

To prevent damage to the key, cover the tip of the screwdriver with a rag.

And remove the depleted battery.
Insert a new battery with the “+” terminal facing up.

Vehicles with a smart key system

To prevent damage to the key, cover the tip of the screwdriver with a rag.

Insert a new battery with the “+” terminal facing up.

Use a cr2016 (vehicles without a smart key system), or cr2032 (vehicles with a smart key system) lithium battery
If the key battery is depleted
The following symptoms may occur:
Caution
Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious injury.
Notice
For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
Moisture may cause the battery to rust.
Air conditioning filter
Checking and replacing
fusesUsing the “setup” menu (“bluetooth*” menu)
Registering a bluetooth® device in the system allows the system
to function. The following functions can be used for registered
devices:
Functions and operation procedures
Press the “setup” button and select “bluetooth*” using the
“tune•scroll” knob.
Press the knob and sele ...
Seat heater switch
Components
Removal
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove switch base (see page ip-18)
Remove seat he ...
Removal
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Remove front pillar cover sub-assembly upper lh
Using a moulding remover, detach the 3 clips and
remove the pillar cover.
...