What is a Volkswagen T-Cross C1 airbag control unit?
The Volkswagen T-Cross C1 airbag control unit is the central safety unit that precisely activates occupant restraint systems such as airbags and seatbelt pretensioners after an accident. It receives and interprets signals from crash sensors, stores relevant accident and error data, and thus ensures the vehicle's functional safety.
This essential module continuously monitors acceleration and pressure data to ensure lightning-fast response in the event of an emergency. Its primary function is to protect occupants by triggering passive safety systems.
The device also communicates with other vehicle systems, for example, to trigger an automatic emergency call function or interrupt the fuel supply. It is a crucial component for the safety of the Volkswagen T-Cross.
Why is the Volkswagen T-Cross C1 airbag control unit defective?
A Volkswagen T-Cross C1 airbag control unit can be defective because it has stored crash data after an accident that requires a reset, or because of internal malfunctions such as a faulty memory. Voltage spikes or age-related wear can also lead to failure, making system repair unavoidable.
After a collision, even with minor impacts, the control unit stores irreversible crash data that disables an airbag system. This prevents it from being put back into operation without professional repair or replacement to ensure safety.
Internal component failure, corrosion on connectors, or short circuits can also cause failure. In such cases, the airbag warning light in the instrument cluster often illuminates, requiring immediate diagnosis.
Common error codes for Volkswagen T-Cross C1 airbag control unit repair
During Volkswagen T-Cross C1 airbag control unit repairs, specific error codes often occur that indicate internal module problems, communication failures, or a crash. These codes are crucial for a precise diagnosis to specifically correct the defect and restore full system functionality.
- B1000 → Control unit communication error → The airbag control unit cannot communicate with other vehicle modules.
- 00588 → Airbag igniter (driver's side) resistance too high/low → A faulty electrical connection or an internal defect in the control unit affects the ignition circuit.
- B1015 → Faulty Airbag Module → A generic internal defect or malfunction of the airbag control module has been detected.
- B1139 → Error within the SRS module → The SRS (Supplemental Restraint System) module has an internal error that affects the safety function.
- B1193 → Airbag module related error → A problem in the airbag module itself that requires repair of the control module.
- B1206 → Airbag RCM (Restraint Control Module) Error → The restraint system control module reports a malfunction, often due to an internal error.
- B1342 → SRS system error → A general error in the entire Supplemental Restraint System detected by the control module.
- B1620 → SRS Error → Another generic SRS system error that requires accurate diagnosis to resolve the problem.
- B1649 → Crash Detected (Crash detected, Airbag Control Unit) → The control unit has detected an accident and stored crash data, which requires a reset.
- 16712650 / B2000 → Internal memory checksum error in the control unit → An error in the flash memory of the airbag control unit, often repairable.
- 65535 → Control unit defective (generic error) → A comprehensive defect in the airbag control unit that requires repair or replacement.
What part numbers are available for the Volkswagen T-Cross C1 airbag control unit repair?
For the Volkswagen T-Cross C1 airbag control unit repair, the exact OEM part number 5Q0 959 655 CG is relevant, as it is the original Volkswagen part. Currently, no other official, alternative OEM part numbers or specific supplier original numbers are known for this model that would guarantee direct interchangeability.
Part number 5Q0 959 655 CG is the primary reference for airbag control units installed in the Volkswagen T-Cross C1 from model year 2019 onwards. It is a proven original part that ensures full compatibility and functional reliability.
When purchasing or repairing a part, vehicle owners and repair shops should always prioritize this OEM number. This ensures that the replacement part exactly matches the specifications of the original component and meets all safety requirements.