Airbag control unit with part number 34D 959 655

What does the airbag control unit 34D 959 655 do?

The airbag control unit 34D 959 655 coordinates the restraint system (SRS) of Skoda. From the signals of the crash sensors, it determines in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

It also checks the system continuously for faults. It indicates a fault via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself. This lock refers to the unit itself.

Why does the control unit 34D 959 655 fail?

Stored crash data is the most common cause after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes come on top of this.

The crash data cannot be erased with a common diagnostic tool. It remains in the control unit, even if the vehicle came through the accident outwardly undamaged.

The other causes stem from ageing and the environment. Solder joints become susceptible over time, moisture and salt attack contacts, and voltage spikes occur, for example, with a weak battery or jump-starting.

How can you tell that the 34D 959 655 is defective?

A defect shows itself through the airbag warning light, which lights up permanently or intermittently, and through an error message in the instrument cluster. In addition, there is no connection to the diagnostic tool, and the fault memory cannot be cleared.

With these signs, airbags and seatbelt pretensioners may fail to deploy in an emergency. The light should therefore be checked promptly.

Which cause lies behind it only becomes clear when the fault memory is read out.

Which vehicles is the 34D 959 655 fitted in?

The control unit 34D 959 655 is fitted by Skoda in these vehicles: Skoda Rapid NH (2012-2017) and NH Facelift (2017-2019).

Below you will see the vehicles for which this part number is registered.

• Skoda Rapid NH (2012-2017)
• Skoda Rapid NH Facelift (2017-2019)

A comparison of the label with this page only shows that you have the correct unit. Having the fault memory read out before removal is the decisive step, because it shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 34D959655B, 6C0 959 655 K.

How does the repair of the 34D 959 655 work?

You have the fault memory read out first and enclose the log. Only then disconnect the battery and remove the control unit 34D 959 655. Next, create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards, your own unit is returned to you. Processing at Airbag24 usually takes 3–4 working days.

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 34D 959 655 get to Airbag24?

You send the control unit 34D 959 655 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel. Pack the unit shock-proof before you send it.