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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-42critical severityChassis

Brake and Driving Control Failure

on 2021 BMW i3 Range Extender · RWD

What this code means

A combined failure affecting braking and driving stability controls has been detected. Raised by the DSC/brake control system.

Symptoms

  • Brake warning light on
  • DSC failure indicator
  • Reduced braking assistance

Common causes

  • DSC hydraulic unit fault
  • Wheel speed sensor failure
  • Brake pressure sensor fault
  • Wiring or connector fault

Diagnostic steps

  1. Read DSC and brake fault codes
  2. Check wheel speed sensors
  3. Inspect brake pressure sensors
  4. Verify hydraulic unit operation
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