Sme fault code 21F21F.
BMW technical service bulletin B612416 for 2016-2017 BMW X5, 2016 BMW 750LI and 2016-2017 BMW 330E and others.
- Bulletin number
- B612416
- Component
- Electrical system
- Summary
- "SME FAULT CODE 21F21F. The fault code (FC) ""21F21F - High-voltage system: Monitoring of insulation resistance deactivated due to fault of the safety box"" is stored in the battery management electronics (SME). The fault does not set any CCM's, is not perceivable to the customer and has no effect on the complete vehicle operation. Safety box malfunction"
Owners of these vehicles have filed 48 complaints in the electrical category.
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