Airbag control unit with part number 2Q0 959 655

What does the airbag control unit 2Q0 959 655 do?

The airbag control unit 2Q0 959 655 acts as the central unit controlling the restraint system (SRS) in Audi. When an impact is detected, it evaluates the crash sensors and decides within milliseconds which airbags and seatbelt pretensioners to trigger.

In addition, the housing carries the manufacturer number Bosch 0285012971. The unit monitors the system continuously and shows faults via the airbag warning light.

After an accident, it stores crash data and locks itself.

Why does the control unit 2Q0 959 655 fail?

The most common cause is stored crash data, even if no airbag was triggered. Other causes are aged components, cold solder joints, moisture and corrosion at plugs, as well as 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

A standard diagnostic tool does not erase crash data. They therefore remain in the memory until they are removed during a repair.

How can you tell that the 2Q0 959 655 is defective?

A defect shows up as the airbag warning light staying on permanently or intermittently, as an error message in the instrument cluster, as a diagnostic tool with no connection, and as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The light reports the fault itself. Therefore take every illumination seriously.

If there is no connection to the diagnostic tool, that may be due to the control unit, but equally to its wiring.

Which vehicles is the 2Q0 959 655 fitted in?

The 2Q0 959 655 is fitted in these vehicles: Audi A1 GB (from 2018).

Here you will find the vehicles that are on record for this part number:

• Audi A1 GB (from 2018)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the right unit. Also have the fault memory read out beforehand, because only this result shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 2Q0 959 655 AK, 2Q0959655AC.

How does the repair of the 2Q0 959 655 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. 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 crash data and carries out a function test. Afterwards, your control unit comes back to you.

Processing at Airbag24 usually takes 3–4 working days, counted for checking, repairing and testing alone.

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 2Q0 959 655 get to Airbag24?

You send the control unit as a parcel or book UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order in the parcel and pack the unit shockproof.