Airbag control unit with part number 5QF959655AG

What does the airbag control unit 5QF959655AG do?

The airbag control unit 5QF959655AG controls the SRS restraint system of Seat. It queries the crash sensors, decides in an emergency within fractions of a second on the triggering of airbags and seatbelt pretensioners, and monitors the system during operation.

If the unit detects a fault, it switches on the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself.

Because it helps decide on triggering, it must work reliably, and that is exactly what it checks continuously.

Why does the control unit 5QF959655AG fail?

For the control unit 5QF959655AG, the most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump start.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

Electronic components can age over time. Moisture and corrosion act on plug connections, and a weak battery or jump start can cause voltage spikes that load the electronics.

How can you tell that the 5QF959655AG is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as the system detects a fault on the 5QF959655AG. In addition, a fault message appears, and the diagnostic tool gets no connection to the control unit.

A fault memory that cannot be cleared is also one of the signs of a defect. In that case airbags and seatbelt pretensioners may not trigger in an emergency. Therefore have the cause clarified promptly rather than ignoring the light.

Which vehicles is the 5QF959655AG fitted in?

The 5QF959655AG is fitted in these vehicles: Seat Ibiza 5 [6F] (2017-2021) and 5 [6F] Facelift (from 2021).

Specifically, these vehicles are concerned:

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

The easiest first step is to compare the part number on the label of your unit with this page. It only confirms that it is the correct unit. Have the fault memory read out, because only the result shows whether the control unit is defective or whether a plug or cable is the cause.

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

How does the repair of the 5QF959655AG work?

For the 5QF959655AG, first enclose the log of the read-out fault memory. Afterwards: disconnect the battery, and only then is the control unit removed. Then you create a repair order online and send the unit in; processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, renews defective components, erases stored crash data and carries out a function test. Afterwards your own unit goes 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 5QF959655AG get to Airbag24?

You send the control unit 5QF959655AG as a parcel; alternatively, you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof.