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 MANUALSTOYOTA2011LANDCRUISER V8-5.7L (3UR-FE)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESSMART KEY SYSTEM (FOR ENTRY FUNCTION)ENTRY ANSWER-BACK BUZZER DOES NOT SOUND
2011 Toyota Landcruiser V8-5.7L (3UR-FE)
Entry Answer-Back Buzzer Does Not Sound
2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION Entry Answer-Back Buzzer Does Not Sound
THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): Entry Answer-back Buzzer does not Sound
- Entry Answer-back Buzzer does not Sound
DESCRIPTION
The smart key system uses the wireless door lock buzzer to perform various vehicle exterior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer signal to the wireless buzzer, and the wireless door lock buzzer sounds.
INSPECTION PROCEDURE
NOTICE:
Before performing the inspection, check that there are no problems related to the "CAN Communication System" and "LIN Communication System".
PROCEDURE
1. CHECK WIRELESS DOOR LOCK BUZZER OPERATION
(a) When the wireless operation is used to lock and unlock the doors, check that the wireless door lock buzzer sounds normally Operation Check.
OK:
Operates normally.
NG -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Service Precautions
OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
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.