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Mercedes-Benz S-Class W126 Saloon airbag control unit repair
A 004 820 17 10 · Label
- Label
- Connector
- Back
- A 004 820 17 10
- A0038207410
- A0048201810
Mercedes-Benz S-Class W126 Saloon 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(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
- Mercedes-Benz
- Model
- Mercedes-Benz S-Class
- Series
- W126 Saloon (1979-1991)
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 a Mercedes-Benz S-Class W126 Saloon airbag control unit?
The Mercedes-Benz S-Class W126 Saloon airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, playing a crucial role in ensuring safe driving.
This safety-critical electronic control unit is responsible for the precise deployment of airbags and seatbelt pretensioners in emergency situations. It continuously analyzes vehicle data and acceleration values to ensure optimal response in the event of a collision.
The control unit also manages the error log and signals malfunctions via the airbag warning light. A professional Mercedes-Benz S-Class W126 Saloon airbag control unit repair is often the most cost-effective solution for defects.
Why is the Mercedes-Benz S-Class W126 Saloon airbag control unit defective?
The Mercedes-Benz S-Class W126 Saloon airbag control unit may be defective due to internal electronic errors, voltage problems, or stored crash data that impair its functionality. Failures often occur after an accident or due to aging, requiring immediate repair to ensure vehicle safety.
Common causes include internal memory problems or corruption of the vehicle-specific software. This can lead to malfunctions and cause the airbag warning light to remain permanently illuminated.
An insufficient power supply to the control unit can also cause a failure. This often manifests itself in intermittent or persistent error messages in the system.
Another critical issue is crash data stored after an accident, which prevents re-operation without a professional Mercedes-Benz S-Class W126 Saloon airbag control unit repair. In such cases, the error log must be erased.
Common error codes for Mercedes-Benz S-Class W126 Saloon airbag control unit repair
During a Mercedes-Benz S-Class W126 Saloon airbag control unit repair, specific error codes may occur that indicate internal defects, communication issues, or stored crash data. These codes are crucial for a precise diagnosis of the control unit itself before further troubleshooting steps can be initiated.
- B1000 → Control unit communication error → Problems with data transmission to other vehicle modules.
- B0003 → Airbag control unit internal error → Defect in the internal electronics or circuits of the control unit.
- B0020 → Internal memory error → Damage or corruption of the internal memory in the control unit.
- B1260 → Airbag control unit voltage supply insufficient → Problems with the power supply to the control unit, often caused by the battery or wiring.
- B1280 → EEPROM error - Memory problem in the control unit → Defect in the non-volatile memory (EEPROM) of the control unit.
- B1400 → Crash data stored - error memory cannot be erased → Permanently stored accident information that causes the system to be blocked.
What part numbers are available for the Mercedes-Benz S-Class W126 Saloon airbag control unit repair?
There are several original Mercedes-Benz (OEM) part numbers for the Mercedes-Benz S-Class W126 Saloon airbag control unit repair, which may vary depending on the year of manufacture and specific vehicle equipment. These numbers are crucial for identifying the correct control unit for your vehicle and completing a successful replacement or repair.
The exact part number is important to ensure compatibility with your vehicle model. A mix-up could impair or even prevent the airbag system from functioning.
A frequently verified OEM part number is 0038207410 , which has been confirmed many times as the airbag control unit for the W126 Saloon. It is a common original part for this model.
The number A0038200610 is also listed as an OEM airbag control unit in professional spare parts databases for the S-Class W126 Saloon. It represents another original variant.
Part number 1268201410 is another original part number for the W126 Saloon airbag control unit, sometimes mentioned in conjunction with the Bosch part number 0285001001. This indicates Bosch as the primary supplier.
Additionally, 0038207310 is a confirmed genuine used part number for the W126 Saloon airbag control unit. It is found in the context of spare parts advertisements for genuine parts.
4.8
Based on 246 reviews
What our customers say
„Ok.“
Zsolt Szabólast week„Works like a charm!“
Leolylast month„Everything went perfectly, I can only recommend it.“
Automatically translated · Original: German
ka irgendwas3 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 Goldammer3 days ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerlein5 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 Buien6 days ago„Uncomplicated service. Fast and thorough. Can only recommend.“
Automatically translated · Original: German
Abdul KS6 days ago„All great👍“
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Edin Avdiclast week„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“
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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
