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Range ExtenderRWDAUTOMATIChybrid
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CC-ID-129low severityBody

Rear Fog Light Failure

on 2021 BMW i3 Range Extender · RWD

What this code means

The rear fog light has failed or reports an abnormal circuit. Detected by the lighting control module monitoring the rear fog lamp.

Symptoms

  • Rear fog light inoperative
  • Fog light warning message
  • Reduced rear visibility in fog

Common causes

  • Burned-out rear fog bulb
  • Corroded connector or socket
  • Blown fuse
  • Lighting module fault

Diagnostic steps

  1. Inspect rear fog bulb
  2. Check connector and wiring
  3. Test fuse and voltage
  4. Read module fault codes

Other Body codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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