Airbag control unit with part number 5QF959655AQ

What does the airbag control unit 5QF959655AQ do?

The airbag control unit 5QF959655AQ coordinates the entire restraint system (SRS) in Seat. It detects an accident via sensors, calculates within fractions of a second which airbags and seatbelt pretensioners should be triggered, and checks the system continuously. If it finds a fault, the airbag warning light lights up.

After an accident, it stores crash data and locks itself. Because it controls triggering, its condition has an immediate significance for safety.

Why does the control unit 5QF959655AQ fail?

The most common cause: crash data stored after an accident, even without an airbag having deployed; a normal diagnostic tool cannot erase it. Other causes at the 5QF959655AQ include ageing electronics, cold solder joints, moisture or voltage spikes.

Airbag24 erases the crash data during the repair. The following further causes are possible:

• ageing of the electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery

How can you tell that the 5QF959655AQ is defective?

A defect on the 5QF959655AQ is shown by the airbag warning light in the instrument cluster, which lights up constantly or intermittently. Additionally there is a fault message, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared.

When the light is on, airbags and seatbelt pretensioners may not deploy in an emergency. Have it checked promptly.

Which vehicles is the 5QF959655AQ fitted in?

The 5QF959655AQ is fitted in these vehicles: Seat Ibiza 5 [6F] (2017-2021) and 5 [6F] Facelift (from 2021).

Here is which vehicles belong to the part number:

• Seat Ibiza 5 [6F] (2017-2021)
• Seat Ibiza 5 [6F] Facelift (from 2021)

Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Whether the control unit itself is defective or a connector or cable is the cause is shown only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 5QF 959 655 L, 5QF 959 655 N, 5QF959655AE, 5QF959655AG, 5QF959655AM, 5QF959655M.

How does the repair of the 5QF959655AQ work?

First have the fault memory read out and attach the log. Only after disconnecting the battery do you remove the control unit 5QF959655AQ. Then create a repair order online and send the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components and erases the stored crash data. Checking, repairing and testing at Airbag24 take 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 5QF959655AQ get to Airbag24?

You choose the route to Airbag24 yourself: you send the control unit 5QF959655AQ as a parcel or book a UPS collection for an extra charge. After the repair, it comes back to you by UPS.

Pack the unit shockproof and enclose the printed repair order in the parcel.