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Mercedes-Benz R-Class W251 airbag control unit repair
Mercedes-Benz R-Class W251 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?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
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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 R-Class
- Series
- W251 (2005-2017)
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 R-Class W251 airbag control unit?
The Mercedes-Benz R-Class W251 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.
This essential component is part of your vehicle's SRS (Supplemental Restraint System). It receives signals from acceleration sensors and seat occupancy sensors.
Within milliseconds, the control unit decides whether to deploy the airbags and seatbelt pretensioners. It is crucial for the safety of the occupants in the event of a collision.
Why is the Mercedes-Benz R-Class W251 airbag control unit defective?
The Mercedes-Benz R-Class W251 airbag control unit often fails because it reacts sensitively to overvoltage, internal software errors, or, in the event of an accident, to stored crash data. This can lead to malfunctions, failure of the airbag warning light, or communication problems with the vehicle system, necessitating a Mercedes-Benz R-Class W251 airbag control unit repair.
Common causes include internal control unit errors or damage after an accident, which results in crash data being stored. Disrupted communication via the CAN bus can also paralyze the control unit.
In some cases, the control unit stops responding altogether or sends erroneous signals, requiring immediate diagnosis. A professional workshop can identify these problems and perform repairs to restore full functionality.
Common error codes for Mercedes-Benz R-Class W251 airbag control unit repair
During a Mercedes-Benz R-Class W251 airbag control unit repair, specific error codes such as B2D92 or B1000 directly indicate problems within the airbag control unit itself. These codes often signal internal defects, communication failures, or crash data stored after an accident that impair the functionality of the restraint system and require professional diagnosis.
These error codes are typically read using manufacturer-specific diagnostic tools. They help pinpoint the exact cause of the problem with the airbag control unit.
- B2D92 → Control unit defective → Internal defect or damage to the airbag control unit.
- B1000 → Control unit communication error → Interruption or fault in data transmission between the airbag control unit and the vehicle.
- S68/2 → Faulty CAN message from control unit N2/7 (restraint system) → The airbag control unit (N2/7) sends faulty information via the CAN bus.
- 8 → Side airbag firing circuit error (related to control unit) → A malfunction in the side airbag firing circuit, which is reported directly by the control unit.
What part numbers are available for the Mercedes-Benz R-Class W251 airbag control unit repair?
For a Mercedes-Benz R-Class W251 airbag control unit repair, several specific OEM part numbers are relevant that exclusively concern the central airbag control unit. These include A1648204426, 1648209826, and A2518204026. They identify genuine Mercedes-Benz parts for the R-Class W251 and are crucial for correctly identifying the module to be repaired.
These numbers are verified original OEM part numbers for the airbag control unit in the Mercedes-Benz R-Class W251. They fit models from 2006 to 2013.
- A1648204426 → Mercedes-Benz → Original airbag control unit for R-Class W251.
- 1648209826 → Mercedes-Benz → Original airbag control unit for R-Class W251.
- A2518204026 → Mercedes-Benz → Original airbag control unit for R-Class W251.
These part numbers ensure that the replacement or repair module fits the vehicle exactly. This information can simplify the search for a suitable Mercedes-Benz R-Class W251 airbag control unit repair.
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“
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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“
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Sven Wegenerlast week„Ok.“
Zsolt Szabólast week
