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 MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYDESCRIPTION AND OPERATION
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
Keyless Entry: Description and Operation
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)SECTION Description and Operation
System Outline
The current flows continuously from DOOR NO.2 fuse to body ECU TERMINAL BDR, from PWR NO.5 fuse to back door ECU TERMINAL BDR, from PWR NO.2 fuse to front passenger door ECU TERMINAL BDR, from PWR NO.1 fuse to driver door ECU TERMINAL BDR, and from ECU-B fuse to body ECU, back door ECU, front passenger ECU, driver door ECU, wireless door control receiver.
1. Wireless Door Lock/Unlock Normal Operation:
Lock operation
All the doors are locked when the lock SW of the transmitter is operated.
Unlock operation
When the unlock SW of the transmitter is operated, the driver's door is unlocked, and if the SW is operated again within 3 seconds, all the doors are unlocked.
2. Automatic Lock Operation
When the doors are unlocked by operating the unlock SW of the transmitter, if no door is opened or the ignition key is not inserted in the key cylinder within 30 seconds, all the doors will be locked again.
3. Lock/Unlock Operation Audiovisual Effect Check
When the vehicle is locked by the transmitter, the parking light & taillight flashes once, and a buzzer sounds once. When the vehicle is unlocked by the transmitter, the parking light & taillight flashes twice, and a buzzer sounds twice.
When the unlock SW of the transmitter is operated while all the doors are locked, the doors will be unlocked and the room light will come on.
When the back window open SW is operated, the buzzer sounds once.
4. Output Repeat Function
If there is not change in the lock condition of the vehicle after the lock signal is output from the transmitter, the lock signal is output again.
The current flows continuously from DOOR NO.2 fuse to body ECU TERMINAL BDR, from PWR NO.5 fuse to back door ECU TERMINAL BDR, from PWR NO.2 fuse to front passenger door ECU TERMINAL BDR, from PWR NO.1 fuse to driver door ECU TERMINAL BDR, and from ECU-B fuse to body ECU, back door ECU, front passenger ECU, driver door ECU, wireless door control receiver.
1. Wireless Door Lock/Unlock Normal Operation:
Lock operation
All the doors are locked when the lock SW of the transmitter is operated.
Unlock operation
When the unlock SW of the transmitter is operated, the driver's door is unlocked, and if the SW is operated again within 3 seconds, all the doors are unlocked.
2. Automatic Lock Operation
When the doors are unlocked by operating the unlock SW of the transmitter, if no door is opened or the ignition key is not inserted in the key cylinder within 30 seconds, all the doors will be locked again.
3. Lock/Unlock Operation Audiovisual Effect Check
When the vehicle is locked by the transmitter, the parking light & taillight flashes once, and a buzzer sounds once. When the vehicle is unlocked by the transmitter, the parking light & taillight flashes twice, and a buzzer sounds twice.
When the unlock SW of the transmitter is operated while all the doors are locked, the doors will be unlocked and the room light will come on.
When the back window open SW is operated, the buzzer sounds once.
4. Output Repeat Function
If there is not change in the lock condition of the vehicle after the lock signal is output from the transmitter, the lock signal is output again.
RENDER: 1.0x
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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.