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Mercedes-Benz SL-Class R129 Convertible airbag control unit repair
004 820 17 10 [09] · Label
- Label
- 004 820 17 10 [09]
- A 000 820 80 26 (00)
- A 004 820 17 10
- A0048201810
Mercedes-Benz SL-Class R129 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
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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
- R129 Convertible (1989-2001)
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 R129 Convertible airbag control unit?
The Mercedes-Benz SL-Class R129 Convertible airbag control unit is the central electronic module for vehicle safety. It continuously monitors sensor data, detects accident situations in real time, and deploys the airbags and seat belt pretensioners as needed. This safety-relevant component also stores important crash information and signals system errors via the SRS warning light.
This microprocessor-based electronic control unit is responsible for the complete coordination of the occupant restraint systems. It ensures the protection of vehicle occupants in the event of a collision.
It is responsible for the precise evaluation of acceleration and crash sensors. The collected data is essential for the correct and timely activation of safety systems.
After an accident, specific crash data is permanently stored in the control unit. This information is used for diagnostic purposes, but must be professionally erased before the system can be restarted.
Why is the Mercedes-Benz SL-Class R129 Convertible airbag control unit defective?
A Mercedes-Benz SL-Class R129 Convertible airbag control unit is often defective because it stores crash data after an accident, preventing it from being restarted. Internal electronic errors, moisture damage, or communication problems with the vehicle's network can also lead to failure and require a Mercedes-Benz SL-Class R129 Convertible airbag control unit repair.
The most common cause of a defect is the storage of crash data after an accident. This data inhibits the control unit from normal operation and causes the SRS warning light to illuminate continuously.
Often, a failure occurs without any obvious cause, such as aging components or internal short circuits. Communication with the device is then no longer possible.
Missing or damaged VINs in the control unit can also indicate a defect. Such problems require a comprehensive diagnosis and subsequent repair.
Common error codes for Mercedes-Benz SL-Class R129 Convertible airbag control unit repair
When repairing the Mercedes-Benz SL-Class R129 Convertible airbag control unit, error codes like B1000 typically occur, indicating communication problems. Other common symptoms include a permanently illuminated SRS warning light, crash data that cannot be erased, or a complete loss of communication within the control unit itself.
- B1000: Communication error → The airbag ECU cannot communicate with other systems or the diagnostic tool → The cause is often an internal defect or failure of the control unit.
- SRS lamp is permanently lit: System error in the airbag control unit → The warning light does not go out after ignition or start → Indicates a deeper problem within the control unit, often due to stored crash data or internal defects.
- Non-erasable crash data: Control unit stores accident data permanently → Normal function of the airbag system is no longer possible → Requires a professional Mercedes-Benz SL-Class R129 Convertible airbag control unit repair for deletion.
- No communication with ECU: Diagnostic devices cannot establish a connection to the airbag control unit → The control unit is inoperative or has completely failed → This requires a comprehensive Mercedes-Benz SL-Class R129 Convertible airbag control unit diagnosis in a specialist workshop.
What part numbers are available for the Mercedes-Benz SL-Class R129 Convertible airbag control unit repair?
For the Mercedes-Benz SL-Class R129 Convertible airbag control unit repair, there are various verified OEM part numbers from Mercedes-Benz and Bosch. These include 004 820 18 10, A001 820 00 26, A000 820 72 26, 000 820 79 26, and the Bosch alternative 028 500 10 83. These are specifically validated for the R129 Convertible airbag control unit.
The compatibility of the Mercedes-Benz SL-Class R129 Convertible airbag control unit part numbers has been thoroughly tested. These units are designed exclusively for airbag control, not for sensors or other modules.
Both Mercedes-Benz and Bosch supplied original part numbers that performed identical functions in the SL R129 Convertible. Bosch often acted as a direct supplier for these safety-relevant components.
Here is an overview of the most common and verified OEM part numbers relevant for a Mercedes-Benz SL-Class R129 Convertible airbag control unit repair:
- Original Mercedes-Benz numbers: 004 820 18 10, A001 820 00 26, 000 820 79 26, 000 820 79 26 04.
- Bosch / Mercedes-Benz OEM numbers: A000 820 72 26 (Bosch), 000 820 79 26 (Bosch).
- Bosch Alternative / Direct Bosch Number: 028 500 10 83 (often linked with 000 820 79 26).
These numbers have been verified on multiple specialist platforms and confirm their fitment for the Mercedes-Benz SL-Class R129 Convertible. These are exclusively airbag control units, which are essential for safety.
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“
Automatically translated · Original: German
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
