Volkswagen Golf Plus Mk5 Airbag Control Unit Repair

What is a Volkswagen Golf Plus Mk5 airbag control unit?

The Volkswagen Golf Plus Mk5 airbag control unit is the central safety unit that continuously evaluates signals from crash sensors. It activates airbags and seatbelt pretensioners in the event of an impact, stores important crash data, and ensures the proper functioning of the entire occupant protection system for your safety.

This essential module, often manufactured by suppliers such as Siemens or Bosch, monitors the vehicle's condition through precise sensor interfaces. It processes data from acceleration and pressure sensors to immediately detect critical impact events.

Communication with the seat occupancy mat ensures that the passenger airbag is only deployed when the seat is occupied. The system typically controls four to six firing circuits for all airbag and seatbelt pretensioner components in the vehicle.

Why is the Volkswagen Golf Plus Mk5 airbag control unit defective?

A Volkswagen Golf Plus Mk5 airbag control unit may be defective due to crash data being permanently stored after an accident or internal communication errors. This causes the airbag warning light to illuminate and disables the system, requiring professional repair or replacement.

Common causes are accidents in which the control unit fulfills its primary function and stores the impact information in an unalterable manner. Without professional deletion of this data, the control unit remains in a faulty state.

Malfunctions in the internal electronics or power supply problems can also cause the control unit to fail. This often manifests itself in the form of persistent error codes indicating an internal defect.

Common error codes for Volkswagen Golf Plus Mk5 airbag control unit repair

During a Volkswagen Golf Plus Mk5 airbag control unit repair, specific error codes occur that directly indicate problems with the airbag control unit. These codes, often referred to as VAG-specific B-codes or 012xx numbers, indicate communication problems or malfunctions within the ECU itself.

• B1000 → Control unit communication error → The airbag control unit cannot communicate correctly with other vehicle systems.
• 01217 → Driver side airbag error (control unit) → A fault in the driver side airbag ignition circuit, often caused by control unit or wiring problems.
• 01218 → Passenger side airbag error (control unit) → A fault in the ignition circuit of the passenger side airbag, similar to error 01217, often due to wiring or directly in the control unit.

What part numbers are available for the Volkswagen Golf Plus Mk5 airbag control unit repair?

For the Volkswagen Golf Plus Mk5 airbag control unit repair, several verified OEM part numbers are relevant, ensuring exact compatibility. Original numbers such as 1K0 909 605 T, 5K0 959 655 C, and 1K0 909 605 C come from Volkswagen or Siemens and are confirmed for your vehicle model.

Part number 1K0 909 605 T has been verified as a genuine OEM part by Volkswagen and Siemens (5WK43412). This control unit is specific to the VW Golf Plus Mk5 (1K series) and is listed in numerous repair offers.

Another suitable OEM number is 5K0 959 655 C, also from Volkswagen and Siemens (5WK44156). It's a confirmed alternative within the Golf family, with identical airbag functionality to support your airbag control unit repair.

In addition, 1K0 909 605 C is recognized as a genuine part for the Golf 5 series. This number has been recognized by independent car recyclers for the Golf 5 airbag control unit and is closely related to 1K0 909 605 T.

It's important to note that all part numbers listed refer to the airbag control unit itself and are not generic sensor or module numbers. Compatibility applies exclusively to the Volkswagen Golf Plus Mk5 (Type 1K, model years 2004-2014) if you want to have the airbag control unit repaired.