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
fusesProblem symptoms table (2005/11-2006/01)
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "suspected area" column
of the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace p ...
Side doors
The vehicle can be locked
and unlocked using the
entry function, wireless
remote control, door lock
switches, key or inside lock
buttons.
Unlocking and locking the
doors from the outside
■ Using the entry function
(vehicles with smart key
system)
Carry the electronic key to
enable this function.
...
Front seat assembly (for power seat type lh side)
Components
...