Quick delivery and it works perfect in my Mercedes W203! 👌👌
Audi RS4 B9 8W airbag control unit repair
Audi RS4 B9 8W airbag control unit repair at Airbag24
Airbag24 repairs defective airbag control units professionally and affordably. Both private customers and workshops can order without registration and benefit from fast processing, 2 years' statutory liability for defects and plug&play installation.
Airbag24 works with state-of-the-art diagnostic technology and specialised repair processes. Because defective control units often involve only individual components, a professional overhaul can be considerably cheaper than buying new.
Our advantages: no registration required, a direct online ordering process for B2B and B2C customers, express shipping and comprehensive quality testing. The repaired control unit works like a new part.
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Choose the service that fits your unit.
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Possible airbag error codes for a defective airbag control unit:
Our estimated repair time for this product is about: 3–4 business days
Specifications
- Make
- Audi
- Model
- Audi RS4
- Series
- B9 8W (2017-2024)

Shipping & repair from Germany
Airbag24 repairs your component in Berlin — usually within 3–4 working days.
Standard shipping within Germany is free; we normally return your part by UPS.
You pay for and insure the inbound shipment to us. On explicit request we ship by express — the extra cost is borne by the customer.
If you withdraw from the contract, you bear the cost of returning the item.
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4.8What is an Audi RS4 B9 8W airbag control unit?
The Audi RS4 B9 8W airbag control unit is the central safety unit in the vehicle, precisely activating all occupant restraint systems such as airbags and seatbelt pretensioners in the event of an accident. It continuously monitors a multitude of sensors, stores relevant crash data, and ensures the proper functioning of all passive safety elements in the vehicle.
This safety-relevant component is responsible for recording accident events.
It communicates with other vehicle systems via the CAN bus.
Why is the Audi RS4 B9 8W airbag control unit defective?
An Audi RS4 B9 8W airbag control unit is often defective because crash data is irretrievably stored in the unit after an accident, resulting in the system being locked. Internal component defects or communication errors in the vehicle data bus can also lead to failure or error messages that require repair.
After an airbag is deployed, the stored crash data block further function.
Internal electronic damage can also cause the control unit to fail.
Faults in the wiring or CAN bus can cause communication problems.
Common error codes for Audi RS4 B9 8W airbag control unit repair
During an Audi RS4 B9 8W airbag control unit repair, specific error codes may occur that indicate problems with the unit itself or its communication. These codes often signal a defect in the internal components, difficulties with data transmission, or problems with the connected ignition systems that require a detailed diagnosis.
- B1000 → Control unit communication error → No connection to the airbag ECU possible.
- 00588 → Driver side airbag squib (N95) resistance too high/low → Defective control unit or wiring problem to the squib.
- B200000 → Control unit component defective → Internal hardware error in the airbag control unit.
- U1123 00 → Error message received in the data bus → Faulty communication in the vehicle network with the airbag control unit.
- B13BC → Intermittent fault in the airbag control unit → Sporadic databus problems or internal failures.
These error codes are typical for defects in the airbag control unit of the Audi RS4 B9 8W.
A precise diagnosis with a suitable tool is essential for repair.
What part numbers are available for the Audi RS4 B9 8W airbag control unit repair?
For Audi RS4 B9 8W airbag control unit repairs, only specific and verified OEM part numbers are used to ensure full compatibility and safety. These part numbers ensure that the replacement or repaired control unit is precisely tailored to the vehicle model and interacts correctly with all safety systems of the Audi RS4 B9 8W.
The primary OEM part number for the Audi RS4 B9 8W airbag control unit is 8W0 959 655.
A commonly compatible alternative OEM part number is 8W0959655A, which is used within the same model range.
These numbers come from original equipment manufacturers such as Bosch, a typical supplier of Audi airbag systems.
Only these part numbers guarantee a safe and effective Audi RS4 B9 8W airbag control unit repair or replacement.
Based on 200 reviews
What our customers say
„Quick delivery and it works perfect in my Mercedes W203! 👌👌“
„Very professional handling. Everything worked super fast, the information about the status of the processing was very good.“
Automatically translated · Original: German
„Had the error SRS Airbag Service urgent on my Volvo C30. At Volvo they could only determine that the error with code CFFF cannot be reset. Proposed solution 865 € for a new module, plus removal and installation and codin…“
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„Fast repair, top, friendly quick contact also for Luxembourg. Gladly again Greetings Serge“
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„At first sight I had no confidence. But I don't regret it. Repair ordered, calculator sent, within a few days I had the diagnosis and the payment order. As soon as the payment was made my calculator came back in perfect…“
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„Everything worked out“
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„All great, removed it myself, brought it in and picked it up 4 days later and installed it.Works again thanks“
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„Everything Top“
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„Fast, simple and uncomplicated“
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„This company is top. They answer questions immediately. Despite holidays everything went really fast. Simply a great company.“
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„What should I say normally, 5 stars are too few TOP I am MEGA satisfied. Can only recommend it. Greetings Thomas Umlauf“
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„Was easy and worked great!!!“
Automatically translated · Original: German
„Quick delivery and it works perfect in my Mercedes W203! 👌👌“



