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Home >> Toyota >> 2012 >> Prius Two >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 119 (Smart Key System (For Entry Function) (Plug-In) (Diagnostic Codes & Symptom Tests)) >> SMART KEY SYSTEM (for Entry Function) >> Symptom Tests >> Entry Exterior Alarm does not Sound >> Description
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Entry Exterior Alarm does not Sound: Description

WARNING: This page is about a different variant/trim than selected.

The smart key system uses the wireless door lock buzzer to perform various vehicle exterior warnings. When the conditions for each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer request signal to the main body ECU (multiplex network body ECU) via CAN communication. The wireless door lock assembly sounds the buzzer according to the signal from the main body ECU (multiplex network body ECU).