Airbag control unit with part number 6R0959655J

What does the airbag control unit 6R0959655J do?

The airbag control unit 6R0959655J controls the restraint system (SRS) in Volkswagen vehicles. It reads the signals from the crash sensors, selects the appropriate airbags and seatbelt pretensioners in an emergency, and continuously monitors the entire sequence. After an accident it stores crash data and locks itself.

Reported faults appear via the airbag warning light in the instrument cluster. This makes the control unit a central component of vehicle safety.

Why does the control unit 6R0959655J fail?

Stored crash data most often leads to a fault, even if no airbag has been triggered. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase crash data; Airbag24 erases it during the repair. The other causes at a glance:

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or a jump start

How can you tell that the 6R0959655J is defective?

The airbag warning light may stay on permanently or intermittently, and a fault message appears in the instrument cluster. If the fault memory cannot be cleared or the diagnostic tool does not find the control unit, this likewise points to a fault. In an emergency, airbags and seatbelt pretensioners may then not trigger.

This is how you recognise the defect:

• An airbag warning light that stays on permanently or intermittently
• A fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• A fault memory that cannot be cleared

Which vehicles is the 6R0959655J fitted in?

In these vehicles the 6R0959655J is fitted: Volkswagen Polo 5 (6C) (2014-2017) and 5 (6R) (2009-2014). Before removal, check your vehicle against these details.

The list of vehicles:

• Volkswagen Polo 5 (6C) (2014-2017)
• Volkswagen Polo 5 (6R) (2009-2014)

Compare the part number on the label of the removed unit with this page. This shows that it is the correct unit, but the comparison says no more than that. The fault memory is read out beforehand: it shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285010527, 6C0 959 655 A, 6C0 959 655 AE, 6C0 959 655 AF, 6C0 959 655 AJ, 6C0 959 655 AK.

How does the repair of the 6R0959655J work?

First have the fault memory read out and the log enclosed. Then disconnect the battery, and only then remove the control unit. Next create the repair order online and send the unit off well packed.

Airbag24 checks the unit on the test bench and repairs defective components. Airbag24 erases stored crash data during this process, before a function test follows. Processing at Airbag24 normally takes 3–4 working days.

The unit then returns to you as your own. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 6R0959655J get to Airbag24?

You send in the control unit as a parcel, or you use UPS collection for an extra charge. The repaired unit is also returned by UPS.

The printed repair order goes into the parcel. Pack the control unit shock-proof so that it arrives undamaged.