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.
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HOMESERVICE MANUALSTOYOTA2004TUNDRA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYKEYLESS ENTRY TRANSMITTERKEYLESS ENTRY TRANSMITTER BATTERYSERVICE AND REPAIR
2004 Toyota Tundra 4WD V8-4.7L (2UZ-FE)
Keyless Entry Transmitter Battery: Service and Repair
2004 Toyota Tundra 4WD V8-4.7L (2UZ-FE)SECTION Service and Repair
REPLACEMENT
1. REMOVE TRANSMITTER BATTERY
NOTICE: Special caution should be taken for handling each component as they are precision electronic components.
(a) Using a screwdriver, open the transmitter case.
NOTICE: Do not forcibly pry out the cover.
(b) Using a screwdriver, pry out the battery (lithium battery).
NOTICE:
- Do not push the terminals with your finger.
- Prying up the batteries (lithium battery) to forcibly remove it will cause deformation of the terminals.
- Do not touch the battery with wet hands. Water may cause unexpected rust.
- Do not touch or move any components inside the transmitter as it may interfere with proper operation.
2. INSTALL TRANSMITTER BATTERY
(a) Install a new battery (lithium battery) with the positive (+) side up, as shown in the illustration.
NOTICE:
- Be sure that the positive side and the negative side of the transmitter battery are matched-up correctly.
- Be careful not to bend the electrode of the transmitter battery insertion.
- Be careful that dust or oil does not adhere to the transmitter case.
(b) Install the case securely.
1. REMOVE TRANSMITTER BATTERY
NOTICE: Special caution should be taken for handling each component as they are precision electronic components.
(a) Using a screwdriver, open the transmitter case.
NOTICE: Do not forcibly pry out the cover.
(b) Using a screwdriver, pry out the battery (lithium battery).
NOTICE:
- Do not push the terminals with your finger.
- Prying up the batteries (lithium battery) to forcibly remove it will cause deformation of the terminals.
- Do not touch the battery with wet hands. Water may cause unexpected rust.
- Do not touch or move any components inside the transmitter as it may interfere with proper operation.
2. INSTALL TRANSMITTER BATTERY
(a) Install a new battery (lithium battery) with the positive (+) side up, as shown in the illustration.
NOTICE:
- Be sure that the positive side and the negative side of the transmitter battery are matched-up correctly.
- Be careful not to bend the electrode of the transmitter battery insertion.
- Be careful that dust or oil does not adhere to the transmitter case.
(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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.