Airbag control unit with part number 8 382 217

What is the function of the airbag control unit 8 382 217?

The airbag control unit with part number 8 382 217 is the central control module for the occupant protection system in the BMW i8 I15 Roadster. It continuously analyzes data from crash sensors and is responsible for precisely deploying airbags and seatbelt pretensioners at the right moment in the event of a collision, thereby protecting occupants.

This control unit, also known as the ACSM4I module (Advanced Crash Safety Module), serves as the brain of the entire passive safety system. It communicates with numerous sensors that measure acceleration and yaw rates within the vehicle.

Upon detecting a collision, the control unit’s electronics determine within milliseconds which restraint systems need to be activated. After deployment, it stores relevant crash data, triggering a subsequent immobilization of the system.

The manufacturer is BMW, though production often occurs in collaboration with specialized suppliers such as Bosch, Siemens, or Continental. This close cooperation ensures adherence to the highest quality and safety standards for critical components like this one.

Why does the control unit 8 382 217 fail?

The most common cause of failure for control unit 8 382 217 is the storage of crash data after an accident, which triggers a safety‑related immobilization. Other reasons include internal electronic malfunctions, hardware defects in components, or specific error codes such as 930BE8, indicating a safety‑related shutdown of the high-voltage system.

Following a collision—even a minor one—the device writes irreversible crash data into its internal memory. This lockout prevents further use without professional reset and ensures the system can be fully functional again after inspection.

A specific and critical error code associated with this control unit is 930BE8. This code signals a safety‑related shutdown of the high-voltage system by the ACSM4I module, typically triggered by excessive voltage. Such an issue is a typical electronic fault requiring repair.

In addition to software‑based locks, purely hardware defects may also be responsible. These include faulty components on the circuit board, problems with connectors, or internal cable breaks that lead to total failure or communication issues.

It’s important to note that similar control units are installed in the BMW i8 series. Alternative part numbers such as 65776837163 (for the i8 I12) or A2C59514447 may exhibit comparable fault patterns, simplifying diagnostics at the workshop.

How do you recognize a defect in 8 382 217?

A defect in control unit 8 382 217 primarily manifests as a permanently illuminated airbag or SRS warning light on the instrument cluster. Often, the control unit can no longer be accessed via a diagnostic tool, preventing precise fault analysis at the workshop and pointing to an internal malfunction.

The most noticeable sign is the activated SRS warning light (Supplemental Restraint System). It remains lit after starting the vehicle, signaling to the driver that the airbag system is not operational and occupant safety cannot be guaranteed.

Another clear symptom is the lack of communication. When a specialist workshop attempts to read the fault memory through the OBD2 interface, the control unit fails to respond. This clearly isolates the fault to the control unit itself, ruling out peripheral issues.

The fault memory may contain specific entries, such as the previously mentioned code 930BE8, directly indicating an internal fault in the ACSM4I module and necessitating targeted repairs.

In which models is 8 382 217 installed?

The airbag control unit with part number 8 382 217 is specifically designed for an exclusive vehicle model. It is used in the BMW i8 I15 Roadster, produced between 2018 and 2020. Airbag24 specializes in repairing this particular unit.

At Airbag24, we repair the 8 382 217 control unit for the following specific model:

BMW: i8 I15 Roadster (model years 2018–2020)

The exact association of this part number with this specific model is crucial, as both the software and hardware are precisely tailored to the vehicle architecture and the safety components installed in the i8 Roadster.

How is the 8 382 217 control unit professionally repaired?

Professional repair of the 8 382 217 control unit at Airbag24 involves systematic analysis, deletion of stored crash data, and correction of electronic faults. After removal and shipment, the unit undergoes testing, the software is restored to factory settings, and defective components are replaced as needed.

The first step is a professional diagnosis performed on the vehicle to confirm that the control unit is indeed the source of the fault. The unit is then removed and sent to Airbag24 for repair.

Upon receipt at Airbag24, technicians conduct a thorough incoming inspection. Using specialized diagnostic software, all fault codes and stored crash data are read out.

The core repair involves what’s known as a crash-data reset, during which the software‑based lock triggered by the accident is lifted. In cases of hardware defects—such as those indicated by error code 930BE8—the affected electronic components on the circuit board are professionally replaced.

Finally, a comprehensive functional test ensures that the control unit operates flawlessly once again, performing like new. We provide a 12‑month warranty on every repair.

What shipping options are available?

To send your defective control unit to Airbag24, you can either ship it yourself free of charge or arrange a convenient UPS pickup at your preferred location. For the return shipment, we offer various free and express options, including cash-on-delivery, to ensure maximum flexibility.

Shipping to Airbag24: You have two simple choices. Pack the control unit securely and send it to us yourself—this option is free of charge. Alternatively, you can use our portal to schedule a UPS pickup at a location of your choice.

Free return shipping: After successful repair, we’ll ship your control unit back to you free of charge via standard UPS delivery (1–3 business days).

Express and cash-on-delivery options: If you need faster service, UPS Express delivery (1–2 business days) is available. Both standard and express shipping can be combined with cash-on-delivery.

Self‑pickup: You can also collect your repaired unit directly from our premises. Simply select the option that best suits you when placing your order.