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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-328high severityChassis

Brake Pad Wear Sensor

on 2021 BMW i3 Range Extender · RWD

What this code means

The brake pad wear sensor has detected that pad thickness has reached the service limit. Raised by the brake system electronics via the instrument cluster.

Symptoms

  • Brake wear warning on dashboard
  • Reduced braking performance over time
  • Squealing or grinding noises

Common causes

  • Worn brake pads at replacement limit
  • Damaged or open wear sensor circuit
  • Disconnected pad wear sensor
  • Faulty brake wear sensor

Diagnostic steps

  1. Inspect brake pad thickness
  2. Check wear sensor wiring and connectors
  3. Replace worn brake pads and sensors
  4. Reset brake service indicator
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