Top!
Audi S8 D4 airbag control unit repair
4H0 959 655 C · Label
- Label
- Connector
- Back
Audi S8 D4 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.
Notes
Mounting position
Repair type
Which repair matches your fault code?incl. VAT plus shipping
Not sure? Just send us an enquiry or give us a call — we're happy to advise you.
Secure payment with
Matching part numbers
Your part number isn't listed? The list isn't complete – we can usually repair it anyway. Simply create a repair order, or ask us first.
Our estimated repair time for this product is about: 3–4 business days
Which repair matches your fault code?
Below your code you can see what needs to be done.
Your error code isn't listed? The list isn't complete – we can usually repair it anyway. Simply create a repair order, or ask us first.
Specifications
- Make
- Audi
- Model
- Audi S8
- Series
- D4 (2012-2013)D4 Facelift (2013-2017)

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.
Google reviews
4.8What is an Audi S8 D4 airbag control unit?
The Audi S8 D4 airbag control unit is the central safety unit that precisely activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensor data, stores important crash information, and ensures the proper functioning of all components of your vehicle's passive safety system.
This electronic control unit processes signals from acceleration and crash sensors in milliseconds to determine the impact intensity and direction.
Based on this information, it specifically triggers the necessary airbags and belt tensioners to effectively minimize injuries to the vehicle occupants.
Why is the Audi S8 D4 airbag control unit defective?
An Audi S8 D4 airbag control unit can be defective because crash data was stored after an accident, internal electronic components fail due to age, or moisture causes short circuits. These defects often prevent the airbag warning light from resetting or the system from functioning correctly, requiring specialized repair.
The most common cause of a defect is the storage of crash data after an accident, which blocks the control unit and activates the airbag light.
Water damage or corrosion can also lead to malfunctions and internal short circuits that render the control unit unusable.
Software errors or defective solder joints inside the module are further reasons why an Audi S8 D4 airbag control unit repair is necessary.
Common error codes for Audi S8 D4 airbag control unit repair
When diagnosing a faulty Audi S8 D4 airbag control unit, specific error codes will appear that directly indicate problems with the control unit itself or its ability to communicate. These codes are crucial for precise repair and system reset.
- B1000 → Control unit communication error → There is a fault in the data transmission between the airbag control unit and the vehicle electrical system.
- 00588 → Airbag igniter resistance error (e.g. driver's side) → The resistance in the airbag igniter circuit deviates from the specified value, which indicates a problem with the control unit or the wiring.
- 01217 → Side airbag igniter error → The airbag control unit detects an error in the ignition circuit of a side airbag, which can be triggered by the control unit.
- U1112 → Communication error / function limitation (implausible messages) → The control unit receives implausible or no messages from other components, which limits its function.
- U1113 → Communication error with other control units → The communication between the airbag control unit and other relevant control units in the vehicle is disrupted.
What part numbers are available for the Audi S8 D4 airbag control unit repair?
For the Audi S8 D4, this repair product has the manufacturer part numbers 4H0 959 655 C, 4H0959655, 4H0959655B and 4H0959655G stored. They belong to airbag control units of this model. To see whether your unit belongs, check the part number on the label of the airbag control unit.
The Bosch supplier part number 285010856 is also stored and belongs to airbag control units of this model. The part number from the label can be stated on the repair order.
Guide
How to create a repair order
Based on 258 reviews
What our customers say
„Top!“
„Ok.“
„Works like a charm!“
„Impeccable service worthy of German organization Perfect repair“
Automatically translated · Original: French
„Everything went well, I will gladly recommend them.“
Automatically translated · Original: German
„Everything went great, nothing better than the cloning of our old control unit could have happened to us“
Automatically translated · Original: German
„The website of Airbag24 Airbagsysteme is very well structured and simply explained. I sent my airbag control unit from my Renault Trafic there for repair. I am very satisfied with the telephone contact as well as by mail…“
Automatically translated · Original: German
„Super great! Very fast repair of an airbag control unit of a Fiat Bravo 198. Sent it off on Monday, got it back already repaired by Friday and installed it. Everything works perfectly again. Old reliable car saved again…“
Automatically translated · Original: German
„Well structured website with clear instructions, processing on schedule, punctual delivery. Worked immediately after reinstallation.“
Automatically translated · Original: German
„Apart from the price which remains a bit high, but compared to the only replacement solution and the service provided, it's PERFECT. Very good sending and return procedure, and customer contact SUPER, not to mention the…“
Automatically translated · Original: French
„Very satisfied great work“
Automatically translated · Original: German
„Airbag control unit was defective..Sent it in and got it back faster than expected.Worked great.Great performance from the Airbag24 Team.Thanks and I will recommend you further.“
Automatically translated · Original: German
„Top!“




