Maintenance and care
Wireless remote control/ electronic key battery
In this manual: Maintenance and care
~1min read
Replace the battery with a new one if it is depleted.
You will need the following items:
- Flathead screwdriver
- Lithium battery CR2032
Replacing the battery
- Vehicles without a smart key system

- Remove the cover using a coin protected with tape etc.

- Remove the depleted battery.
Insert a new battery with the “+” terminal facing up.
- 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.
Use a CR2032 lithium battery
- Batteries can be purchased at your Toyota dealer, local electrical appliance 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 (if equipped) and wireless remote control will not function properly.
- The operational range will be reduced.
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.
NOTICEFor 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 components inside the remote control.
- Do not bend either of the battery terminals.
Test yourself
A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.
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