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 LIMITED, 5.7 Y, RWDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSTHEFT DETERRENT & KEYLESS ENTRYENGINE IMMOBILIZER SYSTEMDTC B2793 TRANSPONDER CHIP MALFUNCTION; DTC B2794 UNMATCHED ENCRYPTION CODE; DTC B2795 UNMATCHED KEY CODEINSPECTION PROCEDURE
2009 Toyota Sequoia Limited, 5.7 Y, RWD
Inspection Procedure
2009 Toyota Sequoia Limited, 5.7 Y, RWDSECTION Inspection Procedure
HINT:
When the transponder key ECU is replaced, reregister the ECU - ECM communication ID (See REGISTRATION ).
- CLEAR DTC
- Clear the DTCs (See DTC CHECK/CLEAR ).
- REREGISTER KEY
- Reregister the key code with the transponder key ECU (See REGISTRATION ).
- CHECK ENGINE START
- Check that the engine starts with the key.
OK: Engine starts.
NG: REPLACE KEY
OK: END
- Check that the engine starts with the key.
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:
- • 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.