Mercedes-Benz SLC R172 airbag control unit repair

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    Possible airbag error codes for this car:

    Mercedes-Benz SLC R172 airbag control unit repair bei Airbag24

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    Part number of the control units in this car

    Possible error codes

    Notes

    If it is determined that the control unit is not defective, only a flat-rate test fee will be charged

    What is a Mercedes-Benz SLC R172 airbag control unit?

    The Mercedes-Benz SLC 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 R172 airbag control unit defective?

    A Mercedes-Benz SLC 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 R172 airbag control unit repair

    When repairing the Mercedes-Benz SLC 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 R172 airbag control unit repair?

    For Mercedes-Benz SLC 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.

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    How do I recognize a defective airbag system?

    The most obvious sign is the illuminated airbag warning light on your dashboard. Even after an accident with deployed airbags, the system components must be checked and usually replaced.

    How long does an airbag repair take

    Depending on the defect and component, a repair typically takes 1-3 business days. In urgent cases, we can often offer faster solutions.

    Is a repair cheaper than buying a new one?

    Definitely! A professional repair often costs only 30-50% of the new price. Especially with expensive control units from Mercedes, BMW, or Audi, you can save several hundred euros.

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