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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-40low severityBody

Press Brake to Start

on 2021 BMW i3 Range Extender · RWD

What this code means

The brake pedal must be pressed to start the engine via the start button. Raised by the CAS/start-stop system.

Symptoms

  • Engine won't start on button press
  • Start prompt displayed
  • No cranking without brake

Common causes

  • Brake pedal not depressed
  • Brake light switch fault
  • Start button fault
  • CAS module fault

Diagnostic steps

  1. Press brake pedal fully and start
  2. Check brake light switch operation
  3. Read CAS fault codes
  4. Inspect start button wiring
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