Airbag control unit with part number 5Q0959655BG

What is the function of the airbag control unit 5Q0959655BG?

The airbag control unit 5Q0959655BG is the central control module for the entire restraint system, particularly in the Volkswagen Multivan T6. It acts as a control unit that processes all relevant data from sensors and coordinates the deployment of airbags and seatbelt pretensioners in the event of a crash, ensuring occupant safety.

As the brain of the passive safety system, this control unit continuously monitors all connected components, including crash sensors, airbag modules, seatbelt pretensioners, and the warning light in the instrument cluster. It ensures that the system remains fully operational at all times and responds accurately and reliably in an emergency.

Why does the control unit 5Q0959655BG fail?

The most common causes of failure for the control unit 5Q0959655BG are airbag deployment following a crash, which results in the unit being locked, as well as physical issues in the peripheral components. These include defective or broken wiring, incorrect connections to the SRS system, or damaged and loose connectors that disrupt communication.

After a traffic accident involving airbag deployment, so‑called crash data is stored in the control unit. This lockout is a safety measure designed to prevent further use. In such cases, according to manufacturer guidelines, replacing the control unit with a new part is mandatory to ensure full functionality for future crash scenarios.

Another source of failure is defects or breaks in the wiring that connects the control unit to individual system components. Incorrect wiring between the control unit and the SRS components (Supplemental Restraint System) can also lead to malfunctions and trigger the warning light.

Often, damaged or vibration‑loosened connectors compromise proper operation, causing contact problems that may result in intermittent or persistent error messages.

When purchasing a replacement part, it is crucial to order the control unit using the vehicle identification number (VIN). Only then can you ensure that it is correctly pre‑programmed for your specific vehicle configuration and functions flawlessly.

How do you recognize a defect in the control unit 5Q0959655BG?

A defect in the airbag control unit 5Q0959655BG primarily manifests as a permanently illuminated airbag warning light on the instrument panel. This warning remains active even after restarting the vehicle, indicating a serious malfunction in the safety system that requires immediate diagnosis.

Diagnosis of a suspected defect is performed in a workshop using a specialized diagnostic tool. This device is connected to the vehicle’s OBD interface to read out the airbag system’s fault memory.

Based on the retrieved error codes, a technician can pinpoint the exact issue—whether the problem lies directly within the control unit itself or in peripheral components such as sensors or wiring. This analysis is critical to determine whether repair is feasible or if replacement is necessary.

In which models is the control unit 5Q0959655BG installed?

The airbag control unit with part number 5Q0959655BG is mainly found in models from the Volkswagen Group. Specifically, it serves as the central control unit in the Volkswagen Multivan of the T6 generation (model years 2015–2019). Airbag24 offers professional repair services for this and other affected models.

At Airbag24, we repair the part number 5Q0959655BG for the following models:

Volkswagen: Multivan T6 (2015–2019)

How is the control unit 5Q0959655BG professionally repaired?

Professional repair of the control unit 5Q0959655BG at Airbag24 includes a precise diagnosis of the submitted unit. Based on the fault memory read out, specific defects—such as stored crash data from a previous accident—are expertly resolved. Following restoration, comprehensive functional tests are conducted.

Upon receipt at Airbag24, the control unit undergoes an initial inspection. Using specialized diagnostic and testing equipment, the defect recorded in the fault memory is verified, and a thorough hardware analysis is performed.

If repair is not possible due to irreparable damage, the control unit is replaced with a new spare part. In this case, the technician carefully installs the new unit and conducts a re‑inspection of all associated components, including wiring and connectors.

We provide a 12-month warranty on all repairs performed and installed parts, ensuring the highest quality and reliability.

What shipping options does Airbag24 offer?

You can send your defective control unit to Airbag24 free of charge by mail, bring it in personally, or arrange a convenient UPS pickup from your preferred location. For returns, you have access to free options such as UPS Standard, as well as faster Express services—optionally available with cash-on-delivery. Self-collection is also possible.

For sending your unit to us, you can choose: drop off the package yourself, bring it in person, or use our convenient UPS pickup service directly at your location.

After successful repair, we offer several return shipping options: free UPS Standard delivery, faster UPS Express shipping, and both options optionally with cash-on-delivery. Of course, you can also pick up your repaired control unit in person.