BMW · DTC LOOKUP

BMW MINI Cooper CAS module faultMINI Cooper R-series CAS/EWS immobilizer fault

BMW diagnostic code. Below: what it means, common causes, symptoms, and the exact bench-programming fix path.

Common causes

  • EWS/CAS module failure
  • Key-pairing data loss
  • Failed coding

Symptoms you'll see

  • Crank-no-start MINI
  • IMMO warning on cluster
  • Cluster sometimes blank

The fix path

Same path as full-size BMW. R50/R53 → EWS Delete. R55-R59 (CAS) → CAS Key Programming.

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