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Mercedes-Benz SL-Class R231 Convertible airbag control unit repair
A231 820 05 26 · Label
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Mercedes-Benz SL-Class R231 Convertible 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.
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Repair type
Which repair matches your fault code?excluding VAT and 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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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 SL-Class
- Series
- R231 Convertible (2012-2020)
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 SL-Class R231 Convertible airbag control unit?
The Mercedes-Benz SL-Class R231 Convertible airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors in the vehicle, stores critical crash data, and ensures the proper functioning of all airbag modules and belt pretensioners to provide maximum occupant protection.
As an integral component of the SRS (Supplemental Restraint System), it is responsible for the reliable control and monitoring of the entire airbag system, including front, side, and curtain airbags. It communicates via the vehicle bus system to transmit diagnostic data and execute control commands.
This safety-critical electronic control unit performs automatic self-diagnosis. If errors are detected, it triggers warning lights in the instrument cluster to alert the driver to potential system malfunctions and ensure safety.
Why is the Mercedes-Benz SL-Class R231 Convertible airbag control unit defective?
A Mercedes-Benz SL-Class R231 Convertible airbag control unit can be defective due to internal hardware failure, unstable power supply, or the crash data memory being full and unable to be erased. This leads to airbag system failure and requires professional diagnosis and repair of the Mercedes-Benz SL-Class R231 Convertible airbag control unit.
Common causes are internal software errors or hardware-related malfunctions that impair the correct functioning of the control unit. Such errors can be caused by aging components or external influences.
Power supply issues, such as overvoltage or undervoltage, can also lead to failure and severely impair the control unit's functionality. A missing VIN entry can also signal a malfunction that requires immediate diagnosis.
After an accident, crash data remains stored in the control unit's memory. If this data cannot be professionally erased, the unit remains locked and requires specialized repair of the Mercedes-Benz SL-Class R231 Convertible airbag control unit.
Common error codes for Mercedes-Benz SL-Class R231 Convertible airbag control unit repair
When diagnosing and repairing the Mercedes-Benz SL-Class R231 Convertible airbag control unit, specific error codes may occur, indicating internal malfunctions, communication problems, or memory errors within the module. These codes are crucial for precisely identifying the cause of a failure and initiating the necessary steps to resolve it.
- B1000 → Control unit communication error → Indicates that the airbag control unit is not communicating properly with other vehicle systems.
- B1001 → Internal diagnostic error in the airbag control unit → Indicates a fault in the internal diagnostic processes of the control unit itself.
- B1005 → Memory error / malfunction in the memory of the airbag module → Indicates a problem with the internal data memory of the airbag control unit.
- B1010 → Airbag control unit error – internal hardware malfunction → Confirms a defect in the physical hardware of the airbag control unit.
- B1100 → Airbag control unit power supply error → Indicates insufficient or faulty power supply to the control unit.
- B1102 → Voltage out of tolerance in the airbag control unit → Indicates that the operating voltage of the control unit is too high or too low.
- B1200 → Internal software error in the airbag control unit → Indicates a fault within the programmed software of the control unit.
- B1300 → Error deleting crash data (crash data memory cannot be deleted) → The control unit cannot be reset after an accident because the crash data memory is full.
- B1400 → Missing chassis number in the control unit (VIN missing) → The vehicle identification number is not stored correctly in the control unit or has disappeared.
- B1500 → Control unit does not respond or no communication is possible → The airbag control unit is not reachable or does not send a response to diagnostic requests.
What part numbers are available for the Mercedes-Benz SL-Class R231 Convertible airbag control unit repair?
For the repair and replacement of the Mercedes-Benz SL-Class R231 Convertible airbag control unit, the original OEM part numbers A2318200526 and 2318200526 are primarily relevant and 100% verified. These specific numbers identify the exact component for the occupant protection system of this series.
Part number A2318200526 is the official Mercedes-Benz OEM number for the R231 Convertible airbag control unit. It is widely listed at authorized dealers and specialized workshops for the repair of the Mercedes-Benz SL-Class R231 Convertible airbag control unit.
The abbreviation 2318200526 is also commonly used and refers to the same original part, but without the "A" prefix. There are currently no other alternative or replacement OEM part numbers known for this specific SL R231 Convertible airbag control unit that would cover repair or replacement.
To ensure compatibility when repairing the Mercedes-Benz SL-Class R231 Convertible airbag control unit, it is always recommended to read the exact part number directly from the existing component or check it in official Mercedes-Benz parts catalogs. This avoids errors during ordering or installation.
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“
Automatically translated · Original: German
Sven Wegenerlast week„Ok.“
Zsolt Szabólast week
