What is a Mercedes-Benz C-Class W205 airbag control unit?
The Mercedes-Benz C-Class W205 airbag control unit is your vehicle's central safety unit, essential for occupant protection in the event of an accident. It continuously monitors sensors, stores relevant crash data, and controls the precise deployment of all airbag modules and seat belt pretensioners to ensure maximum safety.
This high-performance component is responsible for automatically activating the passive safety systems. It collects information from acceleration sensors and decides in milliseconds on the necessary safety measures for occupants.
Why is the Mercedes-Benz C-Class W205 airbag control unit defective?
A Mercedes-Benz C-Class W205 airbag control unit often fails after an accident because crash data is irretrievably stored in the internal memory, causing the system to deactivate. Furthermore, internal electronic errors or surges in the vehicle electrical system can cause a failure, necessitating a professional Mercedes-Benz C-Class W205 airbag control unit repair.
Because crash data is permanently stored in the control unit after an impact, reprogramming is required to restore functionality. This storage causes the airbag warning light to remain permanently illuminated and the system to be disabled.
Failure can also be caused by internal electronic errors that occur independently of an accident. Moisture ingress or age-related material fatigue can also lead to a defective control unit. A timely diagnosis at the workshop is crucial.
Common error codes for Mercedes-Benz C-Class W205 airbag control unit repair
If the Mercedes-Benz C-Class W205 airbag control unit is defective, specific error codes will appear that directly indicate internal problems within the control unit. These codes, such as B1003 or B1600, indicate a malfunction in the central unit and require targeted diagnostics for a successful Mercedes-Benz C-Class W205 airbag control unit repair.
- B1003 → Airbag control unit internal error → Indicates a faulty internal function of the control unit that requires repair.
- B119C → Control Unit Communication Error → Indicates problems with the airbag control unit communicating with other vehicle systems.
- B1600 → Internal control unit error (SRS lamp on) → Indicates a critical error in the control unit, which causes the SRS warning lamp to illuminate.
- B2D92 → Control unit defective → A general diagnosis indicating irreparable damage to the control unit.
- AE69 → Control unit lowline internal error → A specific internal software or hardware error that affects functionality.
- AD67 → SRS control unit defective, error 9004 (voltage too high) → A defect, often caused by overvoltage in the system, which damages the control unit.
- B1BC7-49 → Internal Electronic Failure → A deep electronic failure within the control unit that requires repair.
What part numbers are available for the Mercedes-Benz C-Class W205 airbag control unit repair?
For Mercedes-Benz C-Class W205 airbag control unit repairs, there are several verified Mercedes-Benz OEM part numbers that ensure compatibility and original quality. These numbers, such as A2059002141 or A2059002512, are crucial for correctly identifying the correct replacement part and ensuring a successful repair.
- A2059002141 → Mercedes-Benz AG → Genuine part number, commonly used for Mercedes-Benz C-Class W205 airbag control unit repair.
- A2059014420 → Mercedes-Benz AG → An official replacement number for the original airbag control unit of the W205 series.
- A2059020223 → Mercedes-Benz AG → Another replacement or OE/OEM reference number suitable for the W205 C-Class.
- A2059002512 → Mercedes-Benz AG → A genuine OEM part number used in the Mercedes-Benz C-Class W205.
- A2059001814 → Mercedes-Benz AG → Original part number, suitable for various models of the C-Class W205.
- A2059008618 → Mercedes-Benz AG → Another verified genuine part number for the W205 series airbag control unit.
- A2059009427 → Mercedes-Benz AG → A confirmed genuine part number ensuring compatibility with the Mercedes-Benz C-Class W205.