Airbag control unit with part number 6C0 959 655 AK

What does the airbag control unit 6C0 959 655 AK do?

The airbag control unit 6C0 959 655 AK is the central control unit of the SRS for Volkswagen. It evaluates the crash sensors, determines in a crash within milliseconds the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

If it detects a fault, it stores it and shows it via the airbag warning light in the instrument cluster.

After a crash, the unit stores crash data and locks itself. Only the repair lifts the lock.

Why does the control unit 6C0 959 655 AK fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

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

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair. Which of the other causes applies to your unit is only shown by the check.

How can you tell that the 6C0 959 655 AK is defective?

A defect in the 6C0 959 655 AK shows up in the airbag warning light, in fault messages in the instrument cluster, in a missing connection to the diagnostic tool, and in a fault memory that cannot be cleared.

The warning light lights up permanently or intermittently, and the message in the instrument cluster shows the fault. Please have these findings checked.

As long as these signs persist, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. Therefore, take the indications seriously.

Which vehicles is the 6C0 959 655 AK fitted in?

The 6C0 959 655 AK is fitted in these vehicles: Volkswagen Polo 5 (6C) (2014-2017).

The vehicles for which this part number is recorded are listed in the following overview:

• Volkswagen Polo 5 (6C) (2014-2017)

Comparing the part number on the label with this page only confirms that you have 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 J, 6R0 959 655 K, 6R0959655C.

How does the repair of the 6C0 959 655 AK work?

For your 6C0 959 655 AK, first have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the well-packed unit in. At Airbag24, testing, repairing and checking 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 function test. Afterwards, you receive your own unit back.

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 6C0 959 655 AK get to Airbag24?

You send the 6C0 959 655 AK in as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Enclose the printed repair order in the parcel, and pack the control unit shock-proof.