Airbag control unit with part number 6RD959655G

What does the airbag control unit 6RD959655G do?

The airbag control unit 6RD959655G coordinates the restraint system (SRS) in vehicles from Volkswagen. It continuously evaluates the signals from the crash sensors and decides in a crash which airbags and seatbelt pretensioners fire. After an accident it stores crash data and locks itself.

Monitoring continues even when there is no accident. If the control unit detects a fault, it records it and shows it via the airbag warning light.

Why does the control unit 6RD959655G fail?

Most common cause: crash data stored in the 6RD959655G after an accident, which cannot be erased with a normal diagnostic tool. Aged electronics, moisture at plug connections and voltage spikes are also possible.

Crash data are also created when no airbag has deployed in the accident. Other causes are general:

• ageing of the components
• corrosion and moisture at plug connections
• cold solder joints on the circuit board
• voltage spikes, for example when starting with a weak battery

How can you tell that the 6RD959655G is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears there. In addition, the diagnostic tool cannot establish a connection to the 6RD959655G, and the fault memory remains. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The warning light coming on when the ignition is switched on is a short self-check. If the light stays on afterwards, this indicates a fault that is recorded in the fault memory.

Which vehicles is the 6RD959655G fitted in?

The 6RD959655G is fitted in these vehicles: Volkswagen Polo 5 (6C) (2014-2017) and 5 (6R) (2009-2014).

Assignment by part number produces the following list:

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

First check with this page whether the part number on the label of the removed unit matches, so that you have the correct unit in front of you. The fault memory then answers the real question: is the control unit defective, or is a plug or cable to blame? Have it read out beforehand.

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 6RD959655G work?

First have the fault memory read out, and the log goes into the parcel. Then disconnect the battery, remove the 6RD959655G, create the repair order online and pack the unit well. At Airbag24, inspection, repair and functional testing usually take 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a functional test. Only then is your own unit returned to you. The order of the first steps is mandatory for safety reasons.

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 6RD959655G get to Airbag24?

You send the unit as a parcel to Airbag24, or book a UPS collection for an extra charge. After the repair, Airbag24 returns the control unit 6RD959655G by UPS.

Enclose the printed repair order and pack the unit shock-proof; this packaging protects it from impacts.