01800

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01800 - Light Switch (E1)

01800 - Light Switch (E1): Implausible Signal

Possible Symptoms

  • Parking Light Status Lamp (in Instrument Cluster) stuck ON
  • Self Dimming Rear View Mirror not working

Possible Causes

  • Light Switch (E1) faulty (or switched to an intermediate position)
  • Wiring/Connectors from/to Light Switch (E1) faulty

Possible Solutions

  • Check Light Switch (E1)
    • See Measuring Value Blocks (MVB)
  • Check Wiring/Connectors from/to Light Switch (E1)

Special Notes

  • When found in Audi A3/S3 (8P): Central Electronics, check Light Switch Status in Measuring Value Block (MVB) 017 and 018.
  • When found in Audi A4/S4/RS4/Cabriolet (8E/8H): Central Electronics, check Light Switch Status in Measuring Value Block (MVB) 006.1.
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