Airbag control unit with part number 6C0 959 655 AM

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

In the Volkswagen, the airbag control unit 6C0 959 655 AM controls the restraint system (SRS). It reads the messages from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners fire in an accident.

In day-to-day operation, it constantly checks whether all components of the system are working. If it detects a fault, it reports this via the airbag warning light.

After an accident it records crash data and then stays locked. The lock is only lifted by a repair.

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

The most common trigger is crash data that remained in the memory after an accident, even if no airbag has fired. This data cannot be removed with a usual diagnostic tool. Other causes can be aged electronic components, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

After a collision, the control unit writes the event data to memory, and the entry stays until it is removed from the memory. During the repair at Airbag24, this crash data is erased.

The other causes can lie in the electronics. Components age, solder joints on the circuit board can go cold, and moisture causes corrosion at the plug connections. A weak battery or a jump start also brings voltage spikes into the vehicle electrics.

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

The airbag warning light in the instrument cluster stays on permanently or flickers intermittently. The instrument cluster shows an error message, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared. In a collision, airbags and seatbelt pretensioners may then not deploy.

Typical signs at a glance:

• The airbag warning light stays on or keeps coming on
• The instrument cluster shows an error message on the airbag system
• The diagnostic tool cannot establish a connection to the control unit
• Stored faults do not disappear after clearing

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

The unit with the number 6C0 959 655 AM is fitted in these vehicles: Volkswagen Polo 5 (6C) (2014-2017). All details refer to the brand Volkswagen.

The following overview shows which vehicles belong to this part number.

• Volkswagen Polo 5 (6C) (2014-2017)

Compare the part number on the label of the removed unit with this page, so you can see whether the unit matches the description. Whether the control unit itself is the cause is clarified by the fault memory read out beforehand, which also checks plugs and cables.

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 AM work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Processing at Airbag24 usually takes 3–4 working days.

Afterwards create a repair order online and pack the unit well. The order of these steps protects you during removal.

Airbag24 examines the unit on the test bench, repairs defective components, removes the crash data and carries out a function test. The own unit is then returned 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 6C0 959 655 AM get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, UPS brings your own unit back to you.

Pack the control unit shock-proof so that it is not damaged in transit, and include the printed repair order.