Quick delivery and it works perfect in my Mercedes W203! 👌👌
Mercedes-Benz SLC-Class R172 airbag control unit repair
Mercedes-Benz SLC-Class R172 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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Choose the service that fits your unit.
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Possible airbag error codes for a defective airbag control unit:
Our estimated repair time for this product is about: 3–4 business days
Specifications
- Make
- Mercedes-Benz
- Model
- Mercedes-Benz SLC-Klasse
- Series
- R172 Cabrio (2016-2020)

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.
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4.8What is a Mercedes-Benz SLC-Class R172 airbag control unit?
The Mercedes-Benz SLC-Class R172 airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seat belt pretensioners, in the event of an accident. It precisely monitors sensors, stores important crash data, and ensures the proper functioning of the entire restraint system in the vehicle.
This component has been specially developed for the R172 series models from 2011 to 2020.
It is essential for occupant protection and forms the heart of the passive safety system in your vehicle.
Why is the Mercedes-Benz SLC-Class R172 airbag control unit defective?
A Mercedes-Benz SLC-Class R172 airbag control unit can be defective due to internal memory errors, communication problems, or non-erasable crash data that impair its functionality. After an accident, a reset or repair is often necessary, otherwise the airbag warning light will remain permanently illuminated and the system will be inoperative.
Common causes of failure are internal hardware or software errors that render the unit unusable.
Voltage fluctuations in the vehicle electrical system can also damage the sensitive control unit and require repair.
A professional diagnosis in a specialist workshop is essential to determine the exact cause and repair the defective control unit.
Common error codes for Mercedes-Benz SLC-Class R172 airbag control unit repair
When repairing the Mercedes-Benz SLC-Class R172 airbag control unit, specific B error codes indicate problems with the control unit itself, not with sensors or seatbelt pretensioners. These codes, such as B1210 or B1215, often signal internal defects or non-erasable accident information that require specialized workshop treatment.
- B1000 → Control unit communication error → Airbag ECU
- B1001 → Internal memory error in the control unit → Airbag ECU
- B1100 → Malfunction in the control unit (general) → Airbag ECU
- B1210 → Internal error, non-erasable crash data → Airbag ECU
- B1215 → Missing chassis number in the control unit → Airbag ECU
- B1300 → Control unit error in data communication (CAN bus) → Airbag ECU
These specific error codes cause the airbag warning light in the instrument cluster to illuminate permanently.
Professional diagnostics using special equipment are essential for troubleshooting the airbag control unit.
What part numbers are available for the Mercedes-Benz SLC-Class R172 airbag control unit repair?
For Mercedes-Benz SLC-Class R172 airbag control unit repairs, several specific original OEM part numbers are relevant to ensure exact compatibility. These numbers, such as A1729017601 or A1729019102, identify the appropriate control units for the R172 model, which come directly from Mercedes-Benz.
The following part numbers are verified as original Mercedes-Benz airbag control units for the R172:
- A1729017601 (Original OEM Mercedes-Benz)
- A1729019102 (Original OEM Mercedes-Benz)
- A1729015805 (Original OEM Mercedes-Benz)
- A1729015704 (original OEM Mercedes-Benz)
These numbers only cover airbag control units and do not include sensors or other modules.
The correct part number is crucial to ensure compatibility and safety after repair.
Based on 200 reviews
What our customers say
„Quick delivery and it works perfect in my Mercedes W203! 👌👌“
„Very professional handling. Everything worked super fast, the information about the status of the processing was very good.“
Automatically translated · Original: German
„Had the error SRS Airbag Service urgent on my Volvo C30. At Volvo they could only determine that the error with code CFFF cannot be reset. Proposed solution 865 € for a new module, plus removal and installation and codin…“
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„Fast repair, top, friendly quick contact also for Luxembourg. Gladly again Greetings Serge“
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„At first sight I had no confidence. But I don't regret it. Repair ordered, calculator sent, within a few days I had the diagnosis and the payment order. As soon as the payment was made my calculator came back in perfect…“
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„Everything worked out“
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„All great, removed it myself, brought it in and picked it up 4 days later and installed it.Works again thanks“
Automatically translated · Original: German
„Everything Top“
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„Fast, simple and uncomplicated“
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„This company is top. They answer questions immediately. Despite holidays everything went really fast. Simply a great company.“
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„What should I say normally, 5 stars are too few TOP I am MEGA satisfied. Can only recommend it. Greetings Thomas Umlauf“
Automatically translated · Original: German
„Was easy and worked great!!!“
Automatically translated · Original: German
„Quick delivery and it works perfect in my Mercedes W203! 👌👌“



