A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
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Ultrasonic Sensor: Testing and Inspection
Interior Monitoring, Diagnosis
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After deactivating interior monitoring system with "B" pillar mounted switch the LED will light and stay on for approximately 3 seconds.
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During the first 30 seconds after locking and closing all doors/lids, the system conducts a self test and an interior/adaptation.
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Diagnose as follows:
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All vehicle doors and trunk lid are closed.
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Lock vehicle to restore (activate) anti-theft and interior monitoring systems.
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Check LED indicator in rear fog light switch.
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Check LED Blink Codes according to diagnostic table, see below.
Diagnosis Tables
