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Audi A4 B8 8KH Allroad airbag control unit repair
Audi A4 B8 8KH 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.
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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.
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
- B8 8KH Allroad (2009-2011)B8 8KH Allroad Facelift (2011-2015)
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 A4 B8 8KH Allroad airbag control unit?
In the Audi A4 B8 8KH Allroad, the airbag control unit is the central unit of the restraint system (SRS). It evaluates the signals from the crash sensors and, in an accident, determines within milliseconds which airbags and seatbelt pretensioners fire. If it has registered an accident, it stores crash data and locks itself.
The unit is fitted in the model series 2009 to 2015. It works without a break. It continuously checks sensors, squib circuits and wiring by itself.
If the unit finds a fault, it switches on the airbag warning light in the instrument cluster. At the same time it records the cause in the fault memory. Without a fault, the light goes out again after the ignition is switched on.
Whether airbags and seatbelt pretensioners deploy in time in an emergency depends on this unit. A lit warning light should therefore be checked promptly.
Why is the Audi A4 B8 8KH Allroad airbag control unit defective?
Usually the cause is crash data left in the unit by an accident, even if no airbag fired. Other possible causes are aged electronic components, cold solder joints, moisture with corrosion on connectors and voltage spikes, for example from a weak battery or a jump start.
An ordinary diagnostic tool does not erase stored crash data. The control unit keeps reporting the fault, even though the vehicle has long been in order again.
Three things in particular point to a defect. The airbag warning light stays on permanently. The fault memory cannot be cleared. The diagnostic tool finds no connection to the control unit. If you notice any of these on your Audi A4 B8 8KH Allroad, have the unit checked.
Common error codes for Audi A4 B8 8KH Allroad airbag control unit repair
The codes on the Audi A4 B8 8KH Allroad reveal where in the restraint system something is wrong: in the power supply, in a squib circuit or in the control unit itself. They are read out from the fault memory with a diagnostic tool.
Here are codes that occur on this model. They concern internal faults, the power supply and squib circuits.
- 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 single code does not yet prove a defect of the control unit. The cause can equally be connectors, wiring or an airbag module. The inspection shows where the fault lies. Please enclose the diagnostic report with your unit.
What part numbers are available for the Audi A4 B8 8KH Allroad airbag control unit repair?
You will find the part number on the label of the control unit. It determines the exact version, because depending on equipment and year of manufacture, units of the same model series of the Audi A4 B8 8KH Allroad carry different numbers.
You will find known numbers for this model here. The list is not complete.
- 8K0959655G
- 8K0959655J
- 8K0959655K
- 8K0959655L
- 8K0959655M
- 8K0959655N
Compare the number on your unit with the list. This only clarifies whether it is the matching unit. Whether it is defective only becomes clear from reading out the fault memory or from the inspection.
The route to repair: read out the fault memory, disconnect the battery and remove the control unit. Then create a repair order online and send in the unit. Checking, repairing and testing usually take 3–4 working days at Airbag24. 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.
Based on 233 reviews
What our customers say
„Works like a charm!“
„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 f…“
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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!“
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„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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„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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„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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„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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„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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„Super fast service and repair Fast processing“
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„Works like a charm!“



