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 MANUALSTOYOTA2009SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYKEYLESS ENTRY TRANSMITTERKEYLESS ENTRY TRANSMITTER BATTERYSERVICE AND REPAIR
2009 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Keyless Entry Transmitter Battery: Service and Repair
2009 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Service and Repair
DOOR LOCK: TRANSMITTER BATTERY: REPLACEMENT
REPLACEMENT
1. REPLACE TRANSMITTER BATTERY
NOTE: Be careful when handling each component as they are precision electronic components.
(a) Using a screwdriver with its tip wrapped in protective tape, and turn the screwdriver to disengage the cover.
NOTE: Do not forcibly pry up the cover.
(b) Remove the battery (lithium battery: CR2032).
NOTE:
- Do not push the terminals with your finger.
- Do not forcibly pry up the battery. The terminals may be damaged.
- Do not touch the battery with wet hands. Water may cause rust.
- Do not touch or move any components inside the transmitter, it may interfere with the proper operation.
(c) Install a battery (lithium battery: CR2032) with the positive (+) side facing upward, as shown in the illustration.
NOTE:
- Do not bend the transmitter battery electrode during insertion.
- Keep the transmitter cover interior free of dust and oil.
(d) Engage the cover 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.