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Home >> Toyota >> 2012 >> Matrix Base, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 343 (Smart Key System (Keyless Entry) (Diagnostics & Symptom Tests)) >> SMART KEY SYSTEM (For Entry Function) >> Symptom Tests >> Entry Interior Alarm does not Sound >> Description

Entry Interior Alarm does not Sound: Description

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

The smart key system uses the combination meter buzzer to perform various vehicle interior warnings. When each warning's conditions are met, the certification ECU (smart key ECU assembly) sends a buzzer signal to the meter ECU, and the combination meter buzzer sounds.

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