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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-238low severityChassis

Active Cruise Control Disabled, Hill Descent

on 2021 BMW i3 Range Extender · RWD

What this code means

This message indicates Active Cruise Control has been temporarily disabled during hill descent conditions. It is raised by the cruise control/radar system.

Symptoms

  • ACC not available message
  • Cruise control disengages on descent
  • Warning shown on cluster

Common causes

  • Steep gradient exceeding ACC limits
  • Brake temperature/limitation
  • Radar sensor limitation
  • System temporarily inhibited

Diagnostic steps

  1. Verify road gradient conditions
  2. Check ACC radar sensor status
  3. Scan cruise control module for faults
  4. Confirm brake system readiness
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