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Audi S6 C5 airbag control unit repair
4B0 959 655 C · Label
- Label
- Connector
- 4B0 959 655 C
- 4B0 959 655 E
- 4B0 959 655 G
- 4B0 959 655 TB
Audi S6 C5 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
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Repair type
Which repair matches your fault code?excluding VAT and shipping
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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 S6
- Series
- C5 (1999-2001)C5 Facelift (2001-2005)

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 S6 C5 airbag control unit?
The Audi S6 C5 airbag control unit is the central safety unit for vehicles in the 4B model series, precisely activating airbags and seatbelt pretensioners in the event of an accident. It continuously monitors sensor data, stores crash information, and is critical to occupant safety, which plays a role in the Audi S6 C5 airbag control unit repair.
This module processes signals from various crash sensors, seat occupancy mats, and belt tensioners to enable lightning-fast and precise response.
It is seamlessly integrated into the vehicle network and continuously communicates with other systems to ensure the integrity of the airbag system.
In the event of a malfunction, the airbag warning light is activated, which requires timely diagnosis and, if necessary, an Audi S6 C5 airbag control unit repair.
Why is the Audi S6 C5 airbag control unit defective?
An Audi S6 C5 airbag control unit can fail for a variety of reasons, often due to internal electronic errors, moisture ingress, or age-related wear and tear, making an immediate Audi S6 C5 airbag control unit repair essential. Typical symptoms include persistently illuminated airbag warning lights or a lack of communication with diagnostic devices.
Internal electronic defects are a common cause of control unit failure, often visible through error code 65535.
Liquid ingress, for example from spilled drinks in the center console, can short-circuit the sensitive electronics and damage the control unit.
Short circuits or low voltage in the vehicle electrical system can also lead to malfunctions that require detailed diagnosis and repair of the airbag system.
Sometimes a control unit is broken because the crash data can no longer be reset after an accident, which makes an Audi S6 C5 airbag control unit repair or replacement necessary.
Common error codes for Audi S6 C5 airbag control unit repair
During Audi S6 C5 airbag control unit repairs, specific error codes may occur that indicate problems within the control unit or connected squibs, requiring immediate inspection of the airbag system. These codes are crucial for a precise diagnosis to accurately identify the cause of a failure.
- 00588 → Airbag igniter / Airbag igniter resistance too high or too low (driver's side) → Problem in the airbag control unit or the igniter.
- 01217 → Side Airbag Igniter (Driver) → Malfunction in the airbag control unit or the side airbag igniter.
- 65535 → Airbag control unit defective (internal error, no communication possible) → Internal failure of the airbag control unit, often not erasable.
- B1000 → Control unit communication error → Malfunction in the data connection between the airbag ECU and the vehicle network.
These error codes directly indicate problems that require professional Audi S6 C5 airbag control unit repair or module replacement.
It is important to note that these codes are specific to the airbag control module and do not include errors from external sensors or seat belt pretensioners.
To accurately diagnose these errors and carry out repairs, a manufacturer-specific diagnostic tool such as VCDS or Bosch ESI[tronic] is essential.
What part numbers are available for the Audi S6 C5 airbag control unit repair?
For Audi S6 C5 airbag control unit repairs, the following OEM part numbers are verified as genuine spare parts and are a perfect fit for the 4B series: 4B0959655AA, 4B0959655G, 4B0959655M (Bosch 0285001432), 4B0959655C (Bosch 0285001106), and 4B0959655P. These numbers guarantee full compatibility.
These part numbers are original Audi parts, with Bosch acting as the supplier for these airbag control units, which is common practice in the automotive industry.
The compatibility of these specific numbers with the Audi S6 C5 (4B) has been confirmed by several independent spare parts databases and dealers.
When purchasing, make sure that these are the exact numbers, as other numbers for different model years or vehicle types may not be compatible.
A professional Audi S6 C5 airbag control unit repair requires the use of the correct part number to ensure the safety and functionality of the system.
Based on 246 reviews
What our customers say
„Ok.“
„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 fi…“
Automatically translated · Original: German
„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
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„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 👍“
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„Uncomplicated service. Fast and thorough. Can only recommend.“
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„All great👍“
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„All great, fast delivery. Thanks.“
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„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“
Automatically translated · Original: German
„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
„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
„Ok.“




