What is a Mercedes-Benz CLA X117 Shooting Brake airbag control unit?
The Mercedes-Benz CLA X117 Shooting Brake airbag control unit is your vehicle's central safety unit, activating all occupant restraint systems, such as airbags and seatbelt pretensioners, within milliseconds in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of the passive safety system. This module is crucial for protecting vehicle occupants.
The control unit is specially designed for the Mercedes-Benz CLA Shooting Brake type X117, model years 2015 to 2019.
It is suitable for all engines, both diesel and petrol, in this series.
As the heart of passive safety, it connects with other control units such as ABS and ESP. Precise control of airbags and seatbelt pretensioners minimizes injuries in the event of a collision.
Why is the Mercedes-Benz CLA X117 Shooting Brake airbag control unit defective?
The Mercedes-Benz CLA X117 Shooting Brake airbag control unit may be defective because crash data was permanently stored after an accident or because of internal hardware errors. A communication failure with other vehicle systems also causes the airbag warning light to illuminate, limiting safety. A repair often reliably resolves these problems.
A common reason for failure is the storage of crash data after an accident. This blocks further function and prevents the error log from being erased.
This is indicated by a permanently illuminated airbag warning light in the cockpit, which requires rapid diagnosis in the workshop.
Internal errors in the control unit can also occur without an accident. Such internal defects require specialized diagnostics and often a repair of the module to restore full functionality.
Sometimes the failure is due to disrupted communication between the control unit and the vehicle's CAN bus. This can lead to sporadic error messages and impair the function of the airbag system.
Common error codes for Mercedes-Benz CLA X117 Shooting Brake airbag control unit repair
When repairing the Mercedes-Benz CLA X117 Shooting Brake airbag control unit, the most common specific error code is B220700, which indicates an internal error within the control unit. Additionally, stored crash data can cause the error messages even if no direct OBD-II code is generated. This requires professional airbag control unit repair.
- B220700 → Internal error in the airbag control unit → Defect in the internal electronics or software
The airbag warning light is often permanently activated because crash data from a previous accident is stored in the control unit.
This data must be deleted by a specialized airbag control unit repairer to make the system operational again.
Communication errors or control unit failures can also occur, resulting in a permanently illuminated warning light. A precise diagnosis by a specialist workshop is essential to determine the specific cause and initiate repairs.
What part numbers are available for the Mercedes-Benz CLA X117 Shooting Brake airbag control unit repair?
For the Mercedes-Benz CLA X117 Shooting Brake airbag control unit repair, the exact and 100% verified OEM part numbers are A1179005800 from Mercedes-Benz and 0 285 011 863 from Bosch. These numbers guarantee compatibility with your vehicle model and are crucial for a successful repair.
The Mercedes-Benz original part number A1179005800 (also listed as A117 900 58 00) identifies the specific airbag control unit for the CLA X117 Shooting Brake.
This number is verified multiple times and is considered the main reference for repair or replacement.
The Bosch number 0 285 011 863 is directly assigned as a supplier part number. Bosch is a leading supplier of airbag control units for Mercedes, which confirms the high reliability of this reference.
No other exact replacement or alternative part numbers were found for this specific airbag control unit that would be relevant for repair.
When repairing or replacing, be sure to use the correct numbers to avoid system failure.