Toyota bZ4X Owner's Manual: Electronic Key Battery

Replace the battery promptly when it is depleted.

If the key battery is depleted:

You may notice that the smart key system and wireless remote control do not function properly, and the operational range will be noticeably reduced.

Items to Prepare

Before replacing the battery, gather the following tools and components:

• Flathead screwdriver
• Small flathead screwdriver
• Lithium battery CR2450

Use a CR2450 Lithium Battery

Always replace the key battery with a CR2450 lithium battery, or an equivalent type as recommended by the manufacturer. These batteries can be purchased from your Toyota dealer, local electrical appliance shops, or camera stores. Remember to dispose of used batteries in accordance with local regulations.

Recommendations

Keeping your electronic key battery in optimal condition is essential for ensuring the smart key system and remote control operate flawlessly. For owners of the Toyota bZ4X, this attention to detail not only guarantees reliable access and start-up but also enhances the overall convenience and security of the vehicle. Regular battery replacement prevents unexpected lockouts and helps maintain a seamless user experience.

Replacing the battery

1. Release the lock and remove the mechanical key.

2. Remove the key cover.

Use a screwdriver of an appropriate size. Forcedly prying may cause the cover damaged.

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

3. Remove the depleted battery using a small flathead screwdriver.

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.

When removing the battery, use a screwdriver of an appropriate size.

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

4. When installing the key cover and mechanical key, install by conducting step 2 and step 1 with the directions reversed.

WARNING

Battery Precautions

Follow these battery precautions precisely-failure to do so can lead to death or serious injury.

• Do not ingest the battery. Swallowing it can cause severe chemical burns.
• The electronic key uses a coin or button battery. If such a battery is swallowed, it can cause critical chemical burns in as little as two hours, potentially resulting in fatal injuries.
• Keep both new and used batteries out of reach of children.
• If the battery cover does not close securely, stop using the electronic key, store it safely away from children, and immediately contact your Toyota dealer.
• In the event you accidentally swallow a battery or if one comes into contact with any part of your body, seek emergency medical attention right away.

To Prevent Battery Explosion or Leakage of Flammable Substances

• Always replace the battery with a new one of the exact type recommended. Using an incorrect battery type can lead to explosion.
• Do not expose batteries to extreme conditions, such as very high altitudes with low pressure or extremely high temperatures.
• Never attempt to burn, break, or cut a battery.

NOTICE

When Replacing the Battery

Use a flathead screwdriver that is appropriately sized. Excessive force could deform or damage the battery cover.

For Normal Operation After Battery Replacement

To ensure safe function and prevent accidents after replacing the battery, adhere to these precautions:

• Always work with dry hands, as moisture might cause the battery to rust.
• Avoid touching or moving any other components inside the remote control during the battery replacement process.
• Do not bend or strain either of the battery terminals.

Safety Recommendations

Proper handling of the battery is essential to ensure the safety and reliable function of your electronic key system. For owners of the Toyota bZ4X, adherence to these precautions not only protects against potential hazards-such as battery explosions and chemical burns-but also ensures that your vehicle’s advanced features continue to operate without interruption. By consistently following these guidelines, you safeguard both your personal well-being and your investment.

Remember, using the correctly sized tools and working with dry, secure conditions are vital practices. Always dispose of old batteries according to local regulations, and if any battery-related issue occurs, seek professional assistance immediately.