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Audi S4 B5 8D airbag control unit repair
8D0 959 655 F · Label
- Label
- Connector
- Back
- 8D0 959 655 F
- 8D0 959 655 J
- 8D0 959 655 TD
Audi S4 B5 8D 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
Replacement unit available
Not sure? Just send us an enquiry or give us a call — we're happy to advise you.
4.8Google reviews of our shop(246)
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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.
Repair time
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 S4
- Series
- B5 8D (1997-2001)
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
4.8Based on 246 reviewsView all reviews →
Works like a charm!
Everything went perfectly, I can only recommend it.
Automatically translated · Original: German
From the first phone call, the order processing, to the shipping everything was done very quickly and professionally. Now I still have to send the repaired unit to the Swedish workshop and then hopefully the Honda can finally pass the HU there again (failed because of the red light for the airbag). Today the message came from SWE, the car is running again, the red light is off and the HU was also passed. Once again many thanks for the help in need. Keep it up and maybe word will also spread in SWE that Airbag 24 does great work. Regards Gerd
Automatically translated · Original: German
Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!
Automatically translated · Original: German
Everything worked out great! Read out fault memory, sent it in, received offer and sent in the defective control unit. Got it back repaired after 3 days, price exactly as in the offer. It can't get any better 👍
Automatically translated · Original: German
What is an Audi S4 B5 8D airbag control unit?
The Audi S4 B5 8D airbag control unit is your vehicle's central safety unit, precisely activating all passive occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of a collision. It continuously monitors sensors, stores relevant crash data, and ensures the correct functioning of the entire airbag system. A timely repair of the Audi S4 B5 8D airbag control unit is crucial for safety.
This electronic module processes signals from acceleration and pressure sensors to determine potential airbag deployment within milliseconds. It contains integrated crash and error logs and an interface for diagnostic systems that enable detailed error analysis.
Why is the Audi S4 B5 8D airbag control unit defective?
The Audi S4 B5 8D airbag control unit can fail due to internal memory errors (often following a crash), overvoltage damage, or age-related component failure, leading to communication problems with diagnostic tools or a permanently illuminated airbag warning light; which is why a professional Audi S4 B5 8D airbag control unit repair is often the most cost-effective solution.
Typical signs of a defective or broken control unit include a permanently lit airbag warning light (SRS lamp) in the instrument cluster or the inability to establish a diagnostic connection. A failure of the control unit compromises the entire passive safety of the vehicle, as it no longer functions properly.
Common causes include internal circuit failures, corrosion caused by moisture, or software problems that manifest after an accident. A defective device stores crash data that can only be erased by specialized services to restore full functionality.
Common error codes for Audi S4 B5 8D airbag control unit repair
Audi S4 B5 8D airbag control unit repair requires knowledge of these specific error codes, as they indicate internal defects in the control unit that impair the functionality of the airbag system, making professional diagnosis essential. Timely troubleshooting is crucial for the vehicle's occupants.
These error codes are primary indicators of problems directly within the control unit and are distinct from sensor or belt tensioner faults. Reading them with suitable workshop diagnostic tools is the first step in troubleshooting.
- 65535 → Internal control unit memory error → This critical error code indicates a defect in the internal memory, which often prevents communication with the control unit and keeps the airbag warning light permanently active.
- B1000 → Control unit communication error → Indicates problems with the data transmission between the airbag control unit and the diagnostic tool, which often indicates internal control unit damage or a complete failure.
- 93F9 → Internal error in the airbag control unit → This code signals internal defects in the control unit, which can be caused, for example, by overvoltage and significantly affect the function of the airbag system.
What part numbers are available for the Audi S4 B5 8D airbag control unit repair?
For Audi S4 B5 8D airbag control unit repairs, the exact OEM part numbers are crucial, as compatibility and functionality are vehicle-specific, and only identical or compatible modules ensure safe operation. These primarily include 8D0959655L, 8D0959655C, and 8D0959655J. Correct identification of the part number is essential.
The Audi S4 B5 8D airbag control unit, often manufactured by suppliers such as Bosch or Continental, is specifically designed for model years from approximately 1997 to 2002. Confusion with part numbers of other Audi models or airbag components can lead to malfunctions.
The following OEM part numbers are verified for the Audi S4 B5 8D airbag control unit:
- 8D0959655L → Audi (Bosch/Continental supplier) → Original OEM part number, widely used.
- 8D0959655C → Audi (Bosch/Continental supplier) → Another common original OEM part number for this model series.
- 8D0959655J → Audi (Bosch/Continental supplier) → Also a confirmed genuine OEM part number for the Audi S4 B5 8D airbag system.
- 8D0959655F → Audi (Bosch/Continental supplier) → This number exists, but according to technical information, it is not repairable; the replacement part is number 8D0959655TB.
To ensure a successful and safe Audi S4 B5 8D airbag control unit repair, it is essential to compare the defective unit with one of these confirmed OEM numbers.
4.8
Based on 246 reviews
What our customers say
„Ok.“
Zsolt Szabólast week„Works like a charm!“
Leoly4 weeks ago„Everything went perfectly, I can only recommend it.“
Automatically translated · Original: German
ka irgendwas2 days ago„From the first phone call, the order processing, to the shipping everything was done very quickly and professionally. Now I still have to send the repaired unit to the Swedish workshop and then hopefully the Honda can fi…“
Automatically translated · Original: German
Gerd Goldammer2 days ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerlein4 days ago„Everything worked out great! Read out fault memory, sent it in, received offer and sent in the defective control unit. Got it back repaired after 3 days, price exactly as in the offer. It can't get any better 👍“
Automatically translated · Original: German
Toni Buien5 days ago„Uncomplicated service. Fast and thorough. Can only recommend.“
Automatically translated · Original: German
Abdul KS5 days ago„All great👍“
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Edin Avdic6 days ago„All great, fast delivery. Thanks.“
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Andrej Ivanovlast week„100% satisfied. Everything handled very professionally and transparently. Only the return shipping took too long. This was however due to UPS and less to Aairbag24. Thank you very much“
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Dennis Welast week„VAG airbag control unit with error B2000 00 reliably repaired. Price very high in comparison, but everything worked out. No exact protocol of what was carried out, probably just newly flashed“
Automatically translated · Original: German
Tokeh Tokehlast week„A great shop, even when there are sometimes problems. There are quick responses and very good help. I can only recommend the shop. Thank you very much“
Automatically translated · Original: German
Sven Wegenerlast week„Ok.“
Zsolt Szabólast week
