BMW SME Repair Reset Service

BMW SME REPAIR RESET & CRASH RESET SERVICE

Specialist reset service for BMW SME (Battery Energy Control Unit) modules from i3, i4, i7, iX, and iX3 models.

Our service restores your SME to pre-accident condition — ideal after crash data storage or module replacement. With Pelican Diagnostics, you get a trusted partner for fast turnaround, OEM-quality repair, and reliable reset services.

Why Choose Pelican Diagnostics for Your BMW SME Reset?

• Fast 24-Hour Turnaround – Send it today; we repair, reset, and return it the next working day.

• Crash Data Unlock – Clears crash/impact lockouts to restore full battery management control.

• Full Compatibility – From i3 to iX, your SME returns plug & play or ready for programming.

• Risk-Free Service – If your module isn’t repairable, we return it free of charge.

BMW SME 21F37E Fault Repair Service

Common fault codes we repair include:

• 21F37E – Impact detection: Crash detected due to ACSM signal

• 21F44F – High-voltage battery unit, SME: Pyrofuse ignited or faulty actuation

• 3B001A – High-voltage battery unit: Multiple faults, high-voltage system cannot be activated

• 3B0044 – SME: Internal control unit fault

Our reset service unlocks your SME after an accident or crash event, making it plug & play ready with no programming required.

Crash Data Reset Service Includes:

• Hardware repair with replacement of all pyrofuses

• Crash data cleared from control module

• Module tested and returned by next-day courier

Virgin Reset Service

For cases where a full factory reset is required, we offer a virgin reset service:

• Hardware repair with new pyrofuses

• Module reset to factory state, ready for coding/programming with Esys/Ista

• Next-day service turnaround

⚠️ Note: Virgin reset is not plug & play and requires programming before reuse.

Some Supported Part Numbers

Some of the BMW SME modules we’ve repaired include (not limited to):

• 61278845283 (BMU4H)

• 61278873464 (BMU4H)

Additional Services & Availability

• Every SME is hardware repaired, reset, and tested before dispatch.

• If your SME is unrepairable, we return it at no cost.

• We also stock refurbished BMW SME modules — please contact us to confirm availability.

Frequently Asked Question

Q1: What is a BMW SME module and why does it need resetting?

A1: The BMW SME (Battery Energy Control Unit) manages your car’s high-voltage battery. After a crash or fault, it locks to protect the system. Resetting clears crash data and restores full function.

Q2: My BMW shows fault code 21F37E. What does it mean?

A2: Fault code 21F37E means the SME detected a crash via the ACSM signal. It locks the system until the module is repaired or reset.

Q3: Can I drive my BMW with a faulty SME module?

A3: No, a faulty or locked SME prevents proper battery management. Your BMW may not start or may show HV (high-voltage) system errors until repaired.

Q4: What’s the difference between crash reset and virgin reset for BMW SME?

A4: Crash reset clears accident data so the SME is plug & play ready. Virgin reset restores the module to factory state but requires coding/programming.

Q5: How long does BMW SME repair take?

A5: At Pelican Diagnostics, we complete SME repair/reset within 24 hours of receiving your module.

Q6: How much does BMW SME repair cost compared to replacement?

A6: Repair is usually far cheaper. Replacement from BMW can be thousands, but repair often saves 50% or more.

Q7: Which BMW models use SME modules that you can repair?

A7: We service SME modules from BMW i3, i4, i7, iX, and iX3 models, covering multiple part numbers.

Q8: Do you offer a warranty on SME repair?

A8: Yes, every SME repair and reset comes with testing and quality assurance. If the module is not repairable, we return it free of charge.

Q9: Can I send my SME from outside the UK?

A9: Yes, we accept worldwide shipping and return modules using secure courier services.

Q10: Is BMW SME repair better than buying a refurbished module?

A10: Repair keeps your original module matched to your car and avoids compatibility issues. Refurbished modules can work, but they may require programming.

Ready to Order?

📦 Packaging & Shipping Instructions:

Please package and post your SME battery module to:

• Pelican Diagnostics
  Padley Farm
  Drove Lane
  Sleaford
  NG34 8JQ