Product Title

BMW 1 Series F20 (Pre-LCI 2011–2014) Airbag SRS Control Module ECU 6857701 – OEM

Product Description

Genuine OEM BMW SRS Airbag Control Module (ACSM/ECU) for BMW 1 Series F20 Pre-LCI models (2011–2014).

Part number 6857701, responsible for managing the vehicle’s restraint system including airbag deployment, crash detection, seatbelt pretensioners, and SRS diagnostics.

This unit is designed for pre-facelift (Pre-LCI) vehicles and may not be compatible with LCI (facelift) models.

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

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

Compatibility

Vehicle Model

• BMW 1 Series F20 (Hatchback – Pre-LCI)

Model Years

• 2011–2014

Additional Compatible Models (depending on configuration)

• BMW 1 Series F21 (3-door hatchback Pre-LCI)
• Select early BMW 2 Series F22 models (with matching SRS system)

⚠️ Important:

• This module is for Pre-LCI models only
• Not compatible with facelift (LCI 2015+) vehicles unless part number matches exactly

OEM Part Numbers / Cross References

• 6857701
• 34526857701
• 6855995
• 6855993
• 6855994
• 6854638
• 34526855995

Function

This SRS control module manages:

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

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

Important Notes

• Module may require VIN coding/programming after installation
• 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: 6857701
• 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 pays return shipping
• 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.