Works like a charm!
Audi A4 B9 8WH Allroad airbag control unit repair
Audi A4 B9 8WH Allroad 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.
4.8Google reviews of our shop(233)
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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 A4
- Series
- B9 8WH Allroad (2016-2019)B9 8WH Allroad Facelift (2019-2024)
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.
Google reviews
4.8Based on 233 reviewsView all reviews →
Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!
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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 airbag light). Thanks to Airbag 24 in Berlin 👍👏. Gerd
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Fast repair and fast shipping Simply top
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Everything works great
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Ultra fast delivery, fit really well in the end. There was even a pen and gummy bears included. :D Definitely again, thank you very much!
Automatically translated · Original: German
What is an Audi A4 B9 8WH Allroad airbag control unit?
The airbag control unit is the central control unit of the restraint system (SRS) in the Audi A4 B9 8WH Allroad. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners deploy. After an accident it stores crash data and locks itself.
Modern vehicles report faults in the restraint system on their own. The control unit keeps the message in the fault memory, even if the warning light goes out in the meantime.
The control unit is installed in the Audi A4 B9 8WH Allroad (2016 to 2024). It monitors the entire system continuously, that is sensors, squib circuits and wiring. If it detects a fault, it reports it via the airbag warning light in the instrument cluster and stores an entry in the fault memory.
Because the unit decides whether airbags and seatbelt pretensioners deploy, its correct function is essential for safety in the vehicle. You should therefore not ignore a lit warning light.
Why is the Audi A4 B9 8WH Allroad airbag control unit defective?
The most common cause is crash data stored in the control unit after an accident, even if no airbag deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion on connectors, and voltage spikes, for example from a weak battery or jump-starting.
Which cause applies to your unit is only established by the inspection.
Stored crash data cannot be erased with an ordinary diagnostic tool. The control unit then stays locked, although the damage to the vehicle may long since have been repaired.
Typical signs of a defective control unit are an airbag warning light that stays on permanently, a fault memory that cannot be cleared, and a diagnostic tool that cannot connect to the control unit. If one or more of these signs apply to your Audi A4 B9 8WH Allroad, it is worth having the unit inspected.
Common error codes for Audi A4 B9 8WH Allroad airbag control unit repair
You read out error codes from the fault memory of the Audi A4 B9 8WH Allroad with a diagnostic tool. They then show in which area of the restraint system a fault is present: in the power supply, in a squib circuit or in the control unit itself.
First you read out the fault memory with a diagnostic tool, then you assign the codes. The following list names common codes and their meaning.
- 65535 → Control unit internally defective
- 00532 → Supply voltage too low, sporadic
- 00588 → Driver airbag squib circuit, resistance fault
- 00590 → Passenger airbag squib circuit, fault
- 01217 → Driver-side side airbag squib circuit, resistance fault
- 01218 → Passenger-side side airbag squib circuit, resistance fault
A code alone does not show with certainty that the control unit is defective. Connectors, wiring or an airbag module can also be the cause. Only the inspection clarifies where the fault actually lies. It helps if you enclose the diagnostic report with your unit.
What part numbers are available for the Audi A4 B9 8WH Allroad airbag control unit repair?
The part number is on the label of the control unit and determines the exact version. Within the Audi A4 B9 8WH Allroad model series there are different numbers depending on equipment and year of manufacture.
The following list names known part numbers for this vehicle. It is not exhaustive.
- 8W0959655B
- 8W0959655F
- 8W0959655G
- 8W0959655K
- 8W0959655M
- 8W0959655Q
Compare the number on your own unit with this list. This only ensures that it is the right unit. Whether it is defective is only shown by reading out the fault memory or by the inspection.
Here is how to get your repair: have the fault memory read out, disconnect the battery and remove the control unit. Create a repair order online and send in the unit. Processing at Airbag24, with checking, repairing and testing, usually takes 3–4 working days. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.
4.8
Based on 233 reviews
What our customers say
„Works like a charm!“
Leoly3 weeks ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerleinlast week„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 f…“
Automatically translated · Original: German
Gerd Goldammerlast week„Fast repair and fast shipping Simply top“
Automatically translated · Original: German
Andreas Foxlast week„Everything works great“
Automatically translated · Original: German
Wolfgang Katenzlast week„Ultra fast delivery, fit really well in the end. There was even a pen and gummy bears included. :D Definitely again, thank you very much!“
Automatically translated · Original: German
Tim Hammer2 weeks ago„I drive a W210 estate. My control unit was broken and because of that I couldn't go to TÜV. I was recommended Airbag24 from a forum. I sent in my control unit. Unfortunately everything was a bit under time pressure and I…“
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Franz Dampf2 weeks ago„Motorhome Fiat Ducato. Fault airbag lamp lit permanently, could also not be reset after reading it out. Fault was permanently present. Quick friendly contact with Airbag24, described the fault, known problem was the stat…“
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Rene Larisch2 weeks ago„Professionals are at work here, any additional repairs that may arise are carried out without complaint and without discussion...always happy to come back.“
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Manfred Gunia3 weeks ago„From the order to the repair everything worked well, airbag control unit installed, the light goes off again as it should, good service, fast repair and return shipping. Thanks 👍👍👍“
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Petra3 weeks ago„Got the second airbag control unit from you for another car. Fits, no more error message. Great service Can only recommend. Super fast delivery, and they keep what they promise. A big thank you to this company.“
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Mama 43 weeks ago„Super fast service and repair Fast processing“
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Dennis Baron4 weeks ago„Works like a charm!“
Leoly3 weeks ago
