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Mercedes-Benz C-Class C204 Coupé airbag control unit repair
A204 901 35 02 · Label
- Label
- Connector
- A204 901 35 02
- A2049012704
Mercedes-Benz C-Class C204 Coupé 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
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 C-Class
- Series
- C204 Coupé (2011-2015)
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 C-Class C204 Coupé airbag control unit?
The Mercedes-Benz C-Class C204 Coupé 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 precise control is crucial for occupant protection and vehicle safety.
This control unit continuously collects data from various crash and seat occupancy sensors. Processing these signals enables targeted and rapid deployment of the airbags in an emergency.
It is essential for the passive safety of the vehicle and a key element in ensuring the function of the entire airbag system.
Why is the Mercedes-Benz C-Class C204 Coupé airbag control unit defective?
The Mercedes-Benz C-Class C204 Coupé airbag control unit can fail for a variety of reasons, often after an accident due to stored crash data or internal memory corruption. Electronic failures, incorrect voltages, or software problems can also lead to failure, requiring professional repair.
A common reason is the storage of crash data after an impact, which can trigger an error message and block the control unit. In such cases, a special reset or "clear crash data" is required.
Internal defects such as EEPROM errors or memory corruption (e.g. error codes B1083, B1045, B1101) also occur and make professional diagnosis and repair unavoidable.
An incorrect vehicle identification number (VIN) in the control unit, as indicated by error code A206, can also lead to a failure, especially after replacing vehicle components.
Common error codes for Mercedes-Benz C-Class C204 Coupé airbag control unit repair
Specific error codes are crucial for Mercedes-Benz C-Class C204 Coupé airbag control unit repairs, as they indicate internal problems with the control unit and facilitate diagnosis. These codes often signal memory errors, communication malfunctions, or stored crash data, which allow for targeted repairs.
- A206: Vehicle Identification Number (VIN) in the airbag control unit is incorrect or missing. This code indicates incorrect programming or compatibility.
- B1000: Control unit communication error. A disrupted connection to the airbag ECU may be caused by broken wires or an internal defect in the control unit.
- B1083: EEPROM error in the airbag control unit. This indicates serious internal memory damage, which often requires EEPROM repair.
- B1045: Airbag control module memory error. This generic memory error can affect operation and requires detailed diagnosis.
- B1101: Memory corruption or control module malfunction. This code confirms extensive damage to the airbag control module's internal memory unit.
- B1160: Crash data reset error. Deleting crash data is critical after an accident; this error prevents the control unit from being restarted.
These error codes are primarily relevant to the airbag control unit itself and not to external sensors or components of the airbag system.
What part numbers are available for the Mercedes-Benz C-Class C204 Coupé airbag control unit repair?
There are several original OEM part numbers for the Mercedes-Benz C-Class C204 Coupé airbag control unit repair, which may vary depending on the year of manufacture and equipment. It is crucial to verify the exact part number of the defective unit to ensure correct compatibility and successful repair.
The verified original part numbers for the Mercedes-Benz C-Class C204 Coupé airbag control unit include A2048208285. This part number is widely used and can be found in many models of the series.
Another relevant part number is A2049013502, which is also listed as a genuine part by Mercedes-Benz. It is compatible with various trim levels of the C204 series.
Part number A2049012704 is an additional, validated OEM number for this specific airbag control unit. It also covers some C204 models.
The part number A2079011700 is also relevant for the airbag control unit of the C-Class C204 Coupé and is listed by specialist repair and spare parts companies.
Selecting the correct part number is crucial for a successful Mercedes-Benz C-Class C204 Coupé airbag control unit repair. Always ensure it matches your original part.
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 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 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“
Automatically translated · Original: German
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
