Airbag control unit with part number 6RD959655L

What does the airbag control unit 6RD959655L do?

The control unit 6RD959655L controls the restraint system (SRS) of Volkswagen as the airbag control unit. From the signals of the crash sensors it calculates within milliseconds which airbags and seatbelt pretensioners are triggered in an accident.

At the same time it checks the system continuously. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself.

Why does the control unit 6RD959655L fail?

Crash data is considered the most common cause: data stored after an accident remains in the unit even if no airbag was triggered, and a normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Electronic components wear out over time, and solder joints can have gone cold without this being visible from outside.

Moisture and corrosion at plug connections impair the contact. Voltage spikes arise, for example, with a weak battery or a jump start.

How can you tell that the 6RD959655L is defective?

You recognise a defect by the airbag warning light in the instrument cluster, which is lit permanently or intermittently, by fault messages, or by a missing connection to the diagnostic tool.

Typical signs also include:

• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. Therefore have the fault checked promptly.

Which vehicles is the 6RD959655L fitted in?

The 6RD959655L is fitted in these vehicles: Volkswagen Polo 5 (6C) (2014-2017) and 5 (6R) (2009-2014).

Here are the known vehicles for this part number:

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

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Having the fault memory read out beforehand, on the other hand, shows whether the control unit is defective or whether a plug 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 6RD959655L work?

First you read out the fault memory and enclose the log, then you disconnect the battery and remove the control unit. Last, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on the test bench, replaces damaged components, deletes stored crash data and checks the function. Afterwards your own unit comes back to you.

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 6RD959655L get to Airbag24?

Either you send the unit in as a parcel or you book a UPS collection for an extra charge. After the repair Airbag24 returns it to you by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-proof.