Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual: Electronic key battery

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

1. Take out the mechanical key.

2. Remove the cover.

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

3. Remove the depleted battery.

When removing the cover, the electronic key module may stick to the cover and the battery may not be visible. In this case, remove the electronic key module in order to remove the battery.

Insert a new battery with the "+" terminal facing up.

â–  Use a CR2032 lithium battery

• Batteries can be purchased at your Lexus 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 the local laws.

â–  If the electronic key battery is depleted The following symptoms may occur:

• The smart access system with push-button start and wireless remote control will not function properly.
• The operational range will be reduced.

WARNING

â–  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

â–  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.