Product Title

BMW 5 Series 523i SRS Airbag Control Module ECU 6854638 – OEM Safety Unit

Product Description

Genuine OEM BMW SRS Airbag Control Module (ACSM/ECU) for BMW 5 Series vehicles, including 523i models.

Part number 6854638, responsible for managing the vehicle’s restraint system including airbag deployment, crash detection, seatbelt pretensioners, and full SRS diagnostics.

This is a critical safety ECU used in BMW airbag systems and must be correctly matched and coded to the vehicle after installation.

This item is used OEM and removed from a working vehicle unless otherwise stated. It may show normal signs of wear consistent with age and use.

Please carefully review all photos before purchase to confirm condition and compatibility.

Compatibility

Vehicle Models

• BMW 5 Series F10 (Sedan)
• BMW 5 Series F11 (Touring)

Engine Variant

• 523i (as listed)
• May also be compatible with other F10/F11 petrol variants depending on SRS configuration

Model Years

• Approximately 2009–2013 (varies by production date and specification)

OEM Part Numbers / Cross References

• 6854638
• 34526854638
• 6854637
• 6854639
• 6855995
• 6856875
• 6866990
• 6878191

Function

This SRS control module manages:

• Airbag deployment (front, side, curtain airbags)
• Seatbelt pretensioners
• Crash signal processing
• SRS system diagnostics and fault memory

It is a core safety ECU for BMW occupant protection systems.

Important Notes

• Coding or VIN programming may be required after installation
• Some units may contain stored crash data depending on donor vehicle history
• Must match exact part number for correct operation
• Professional installation and BMW diagnostic tools (ISTA/Autel) strongly recommended

Item Details

• Brand: BMW (OEM)
• Part Number: 6854638
• Type: Airbag Control Module (SRS ECU)
• Condition: Used

Return & Shipping Policy

• Returns accepted within 14 days of delivery
• Item must be returned in original condition and packaging
• Buyer is responsible for return shipping costs
• Import duties and taxes are buyer’s responsibility

Important Notice

• Used electronic safety component
• We are not responsible for coding, programming, or installation issues
• Always verify compatibility using VIN or part number before purchase

Contact

For VIN compatibility confirmation or technical questions, please message before purchase.