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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-90moderate severityBody

Trailer Reverse Light Failure

on 2021 BMW i3 Range Extender · RWD

What this code means

A failure has been detected in the trailer reverse light circuit. This message is raised by the trailer or lighting control module.

Symptoms

  • Trailer reverse light not working
  • Warning message when reversing
  • Intermittent trailer light operation

Common causes

  • Blown trailer reverse bulb
  • Corroded trailer socket contacts
  • Trailer wiring fault
  • Trailer module circuit fault

Diagnostic steps

  1. Inspect trailer reverse bulb
  2. Check trailer socket contacts
  3. Test reverse light circuit
  4. Scan trailer module for faults
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