What is a BMW X1 F48 airbag control unit?
The BMW X1 F48 airbag control unit is the central safety unit for your vehicle, activating all occupant restraint systems in the event of an accident. It precisely monitors sensors, stores important crash data, and ensures the proper, lightning-fast operation of all airbag modules and seatbelt pretensioners to ensure passenger safety.
This essential module, also known as the SRS Control Unit or ACSM, is responsible for analyzing impact severity. It is the brain of the passive safety system in your BMW X1 F48.
Its precise functionality ensures that airbags and belt tensioners are triggered at exactly the right moment to provide optimal protection for the occupants.
Why is your BMW X1 F48 airbag control unit defective?
Your BMW X1 F48 airbag control unit may be defective because, after an accident, it stores crash data that prevents continued operation without a reset. This signals to the system that a safety-related check or repair of the airbag control unit is necessary before it can be fully functional again and error messages can be resolved.
Common causes of failure include internal memory errors, communication problems with other vehicle systems, or a missing or incorrect vehicle identification number (VIN) in the module.
Aging or electrical overvoltages can also damage the control unit, which requires professional diagnosis and, if necessary, a BMW X1 F48 airbag control unit repair.
Common error codes for BMW X1 F48 airbag control unit repair
Specific B-codes indicate that your BMW X1 F48 airbag control unit is malfunctioning and requires repair. These codes directly indicate problems with the control unit itself, such as communication errors, internal malfunctions, or non-erasable crash data, and require targeted diagnostics.
- B1000 → Control unit communication error → The control unit does not communicate correctly with the diagnostic software.
- B1012 → Airbag control unit memory error → Internal storage of data is faulty.
- B1070 → Internal error in the airbag control unit → A general internal malfunction exists.
- B1201 → Airbag control module error → A specific internal malfunction of the module.
- B1265 → Crash data cannot be deleted → The control unit is in a locked state after an accident.
- B1280 → Chassis number missing or incorrect → The VIN in the control unit is illegible or missing.
These error codes are crucial for the accurate diagnosis and execution of the BMW X1 F48 airbag control unit repair.
Workshops with professional diagnostic tools such as BMW ISTA+ or Bosch ESI[tronic] can precisely identify and resolve these problems.
Which part numbers are relevant for the BMW X1 F48 airbag control unit repair?
For a precise and successful BMW X1 F48 airbag control unit repair, only specific, verified BMW OEM part numbers are relevant, ensuring 100% compatibility with your vehicle. These numbers are crucial for selecting the correct module for replacement or reset.
- 6998487 (BMW original, SRS control unit)
- 6818814 (BMW Original, including OEM reference numbers 335499103, 13044110)
- 9495911 (BMW Original, including OEM reference numbers 65779495911, 9484303)
These part numbers are direct from BMW and are specific to the airbag control unit (SRS Control Unit) of the BMW X1 F48.
Separate OEM part numbers from suppliers such as Bosch or Continental could not be verified, as BMW typically lists these modules under their own numbers.
Technical specifications and compatibility of the BMW X1 F48 airbag control unit
The airbag control unit for the BMW X1 F48 is the central control unit used in all variants of the model, including PHEV versions, from model year 2015 onwards. It is designed to monitor and trigger the safety systems and typically weighs approximately 1 kg.
It is primarily compatible with the BMW X1 (F48) from model year 2015 and works in various equipment lines.
The module is typically located in the center console or under the passenger seat and has multi-pin, usually yellow connectors for signal transmission to airbags and belt tensioners.
How does the BMW X1 F48 airbag control unit repair and reset service work?
BMW X1 F48 airbag control unit repair typically involves a specialized reset of the module, which erases stored crash data and error codes. This restores the control unit to full functionality, in most cases making it immediately plug-and-play capable, and is a cost-effective alternative to purchasing a new one.
This service resets the control unit to its factory settings, which removes the error messages.
After the reset, the module is almost always ready for use in the vehicle; calibration or programming is rarely necessary.
Such a repair avoids the expensive purchase of a new part and the possible waiting time for a replacement part if your control unit is only defective and not completely broken.