What is a Mercedes-Benz GLC C253 Coupé airbag control unit?
The Mercedes-Benz GLC C253 Coupé airbag control unit is the central safety unit of the Supplemental Restraint System (SRS). It continuously monitors sensors in the vehicle, such as crash sensors and seat belt pretensioners, to rapidly activate the airbags and other restraint systems in the event of a collision, thus providing optimal protection for the occupants.
This module is specifically tailored to the GLC Coupé (C253) series from 2016 to 2022. It receives information from the crash sensors within milliseconds to specifically trigger the required restraint systems.
Why is the Mercedes-Benz GLC C253 Coupé airbag control unit defective?
A Mercedes-Benz GLC C253 Coupé airbag control unit is often reported as defective because it stores irretrievable crash data after an accident and becomes blocked. Internal communication errors or system failures can also occur. This makes a professional repair of the Mercedes-Benz GLC C253 Coupé airbag control unit essential.
After a trigger, the control unit stores indelible crash data, which results in the module being locked.
Other reasons for failure may be internal electronic defects or power surges that affect the functionality of the system.
A defective module does not always need to be replaced; often a repair is the cost-effective and safe alternative to reprogramming or replacing the Mercedes-Benz GLC C253 Coupé airbag control unit.
Common error codes for Mercedes-Benz GLC C253 Coupé airbag control unit repair
When repairing the Mercedes-Benz GLC C253 Coupé airbag control unit, specific error codes occur that point directly to the control unit. The most common are B1000, which indicates communication error, and B1BC79A, which indicates indelible crash data after an impact and requires specialized repair.
- B1000 → Control unit communication error → The airbag control unit cannot communicate correctly with other vehicle systems.
- B1BC79A → Airbag control unit crash data cannot be deleted → After an accident, permanent crash data is stored, which locks the module and requires a reset.
These error codes refer explicitly to the control unit function and not to peripheral components such as sensors or belt tensioners.
Correctly diagnosing these codes is critical for a successful Mercedes-Benz GLC C253 Coupe airbag control unit repair and the restoration of the safety systems.
What part numbers are available for the Mercedes-Benz GLC C253 Coupé airbag control unit repair?
Several verified OEM part numbers are crucial for the Mercedes-Benz GLC C253 Coupé airbag control unit repair. The most important ones are A2059017513, A2059009627, and A2059027311 from Mercedes-Benz, as well as the supplier part number A2C33330519. These numbers ensure exact compatibility with your GLC C253 Coupé.
Part number A2059009627 is one of the most frequently referenced OEM numbers for the airbag control unit of the GLC C253 Coupé.
The number A2C33330519 is typically assigned to an original equipment manufacturer such as Bosch or Continental and is also directly compatible.
A precise part number match is essential for functionality and safety after a Mercedes-Benz GLC C253 Coupé airbag control unit repair.