Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Keyless Entry Transmitter Battery: Service and Repair
2006 Scion xB L4-1.5L (1NZ-FE)SECTION Service and Repair
TRANSMITTER BATTERY
REPLACEMENT
1. REMOVE TRANSMITTER BATTERY
NOTE: Take extra care when handling these precision electronic components.

a. Using a screwdriver, pry out the transmitter case.
HINT: Tape the screwdriver tip before use.
NOTE: Do not forcibly pry out the case.

b. Remove the battery (lithium battery).
NOTE:
- Do not push the terminals with your finger.
- Do not forcibly pry up the battery (lithium battery). The terminals may become damaged.
- Do not touch the battery with wet hands. Water may cause rust.
- Do not touch or move any components inside the transmitter.

2. INSTALL TRANSMITTER BATTERY
a. Install a new battery (lithium battery) with the positive (+) side up, as shown in the illustration.
NOTE:
- Be sure that the positive (+) and negative (-) sides of the transmitter battery are correctly matched up to the transmitter terminals.
- Be careful not to bend the transmitter battery electrode during insertion.
- Keep the transmitter case interior free of dust and oil.
b. Install the case securely.
REPLACEMENT
1. REMOVE TRANSMITTER BATTERY
NOTE: Take extra care when handling these precision electronic components.
a. Using a screwdriver, pry out the transmitter case.
HINT: Tape the screwdriver tip before use.
NOTE: Do not forcibly pry out the case.
b. Remove the battery (lithium battery).
NOTE:
- Do not push the terminals with your finger.
- Do not forcibly pry up the battery (lithium battery). The terminals may become damaged.
- Do not touch the battery with wet hands. Water may cause rust.
- Do not touch or move any components inside the transmitter.
2. INSTALL TRANSMITTER BATTERY
a. Install a new battery (lithium battery) with the positive (+) side up, as shown in the illustration.
NOTE:
- Be sure that the positive (+) and negative (-) sides of the transmitter battery are correctly matched up to the transmitter terminals.
- Be careful not to bend the transmitter battery electrode during insertion.
- Keep the transmitter case interior free of dust and oil.
b. Install the case securely.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.