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Home >> Toyota >> 2021 >> 4Runner TRD Pro >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Key System (For Entry Function) - Symptom Tests >> SMART KEY SYSTEM (for Entry Function) >> Back Door Entry Lock and Unlock Functions do not Operate [08/2015 - 08/2019] >> Description

Back Door Entry Lock and Unlock Functions do not Operate [08/2015 - 08/2019]: Description

When the back door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) the power door lock control system, 2) the electrical key antenna (outside luggage) or 3) the certification ECU.