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Home › Lexus › 2007 › RX 400h AWD › Repair and Diagnosis › External Pages › Different car › Section 175 (Door Lock) › Key Reminder Warning System › System Description

System Description

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. KEY REMINDER WARNING SYSTEM DESCRIPTION 
    1. When the driver side door is opened with the key in the ignition key cylinder and ignition switch in the ACC or OFF position, this system causes the key reminder warning buzzer to sound in order to warn the driver that the ignition key has not been removed.
  2. FUNCTION OF COMPONENT 
    COMPONENTS FUNCTION

    Component Function
    Front Door Courtesy Light Switch Assembly LH Detects front door status (open or closed) and outputs signal to instrument panel junction block (main body ECU)
    Unlock Warning Switch Assembly Detects if key is inserted into ignition key cylinder or not and outputs signal to instrument panel junction block (main body ECU)
    Combination Meter Assembly Receives buzzer request signal from main body ECU after main body ECU receives ignition switch signal and front door courtesy light switch signal, and actuates inner circuit to sound built-in buzzer intermittently
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