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Home >> Toyota >> 2017 >> Highlander LE Plus, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 249 (Smart Key System (Entry Function) - Symptom Tests - (Hybrid)) >> SMART KEY SYSTEM (for Entry Function) >> Symptom Tests >> Entry Interior Alarm does not Sound [02/2014 - ] >> Description
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Entry Interior Alarm does not Sound [02/2014 - ]: Description

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The smart key system (for Entry Function) uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the combination meter assembly via CAN communication and the buzzer sounds.