Airbag control unit with part number 5K0 959 655 F

What does the airbag control unit 5K0 959 655 F do?

The airbag control unit 5K0 959 655 F is the central control unit of the restraint system (SRS) for Volkswagen. It evaluates the crash sensors, decides in an accident within milliseconds on airbags and seatbelt pretensioners, and monitors the system continuously. Faults are shown via the airbag warning light.

The monitoring runs in the background, so that trigger circuits and connections are checked continuously. After an accident the control unit stores crash data and locks itself.

Why does the control unit 5K0 959 655 F fail?

On the 5K0 959 655 F, the most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data remains in memory until it is removed deliberately. Airbag24 erases it during the repair.

The other causes develop over time. Moisture and corrosion impair contacts, ageing weakens components, and voltage spikes, for example from a weak battery or jump-starting, stress the electronics further.

How can you tell that the 5K0 959 655 F is defective?

On the 5K0 959 655 F, the airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears, and the diagnostic tool finds no control unit. If the fault memory cannot be cleared, a check is necessary.

The warning light is the most important sign of a defect. In an emergency, airbags and seatbelt pretensioners may then possibly not trigger.

A missing connection to the diagnostic tool is also an indication of a problem.

Which vehicles is the 5K0 959 655 F fitted in?

The comparison with the list shows whether your model is affected. The airbag control unit 5K0 959 655 F is fitted in these vehicles: Volkswagen Golf 6 (5K1); Volkswagen Golf Variant 6; Volkswagen Golf Plus 5 (2004-2008).

The vehicles in detail:

• Volkswagen Golf 6 (5K1)
• Volkswagen Golf Variant 6
• Volkswagen Golf Plus 5 (2004-2008)

(a) Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. (b) Have the fault memory read out beforehand. Only that shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1K0 909 605 T, 1K0909605C, 5C0 959 655 A, 5C0 959 655C, 5C0959655B, 5C0959655D.

How does the repair of the 5K0 959 655 F work?

First read out the fault memory of the 5K0 959 655 F and enclose the log. Then disconnect the battery, remove the control unit afterwards, and create a repair order online. Send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. After that, 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 5K0 959 655 F get to Airbag24?

You send the control unit 5K0 959 655 F as a parcel or 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.