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2021 BMW I3
Range Extender•RWD•AUTOMATIC•hybrid
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Repairs0Labor318Torque3717Fluid6DTC2228Battery1Maintenance0Recalls0
CC-ID-25low severityPowertrain

Preheating, please wait

on 2021 BMW i3 Range Extender · RWD

What this code means

Diesel glow plugs are preheating and the engine start should be delayed until complete. Raised by the diesel glow plug control module.

Symptoms

  • Preheat indicator illuminated
  • Start delay requested
  • Cold-start hesitation

Common causes

  • Normal cold-start preheating
  • Faulty glow plug
  • Glow plug relay fault
  • Low battery voltage

Diagnostic steps

  1. Wait for preheat indicator to clear
  2. Test glow plug resistance
  3. Check glow plug relay operation
  4. Verify battery voltage
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