Airbag control unit with part number 5QF959655AF

What does the airbag control unit 5QF959655AF do?

The airbag control unit 5QF959655AF forms the central control unit of the restraint system for Seat. It processes the signals from the crash sensors, decides in a crash within milliseconds which airbags and seatbelt pretensioners trigger, and monitors the system permanently during operation.

If the unit detects a fault, it reports it via the airbag warning light. After an accident it stores crash data and locks itself.

Monitoring takes place in the background while the vehicle is driven or stationary.

Why does the control unit 5QF959655AF fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Other causes considered are aged electronic components, dry solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair of control unit 5QF959655AF.

Aged electronics and dry solder joints impair the connections between components. Moisture, corrosion and voltage spikes, for example from a weak battery or a jump start, work in a similar direction.

How can you tell that the 5QF959655AF is defective?

A defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently, when an error message appears, when the diagnostic tool cannot make a connection, or when the fault memory cannot be cleared.

The airbag warning light in the instrument cluster is the first sign you notice. In an emergency, airbags and seatbelt pretensioners may fail to trigger with such a finding.

Which vehicles is the 5QF959655AF fitted in?

The control unit 5QF959655AF is fitted in these vehicles: Seat Ibiza 5 [6F] (2017-2021) and 5 [6F] Facelift (from 2021).

The overview below lists the vehicles that Airbag24 has on record for this part number.

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

First compare the part number on the label of the removed unit with this page, so you can establish that it is the correct unit. Second, have the fault memory read out beforehand, because only this 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, 5QF959655AE, 5QF959655AG, 5QF959655AM, 5QF959655M.

How does the repair of the 5QF959655AF work?

First read out the fault memory and enclose the record, then disconnect the battery and remove the unit. Then create a repair order online and pack the unit securely for sending.

Airbag24 checks control unit 5QF959655AF on the test bench, replaces defective components, clears stored crash data and carries out a function test. Processing 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 5QF959655AF get to Airbag24?

You send control unit 5QF959655AF as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

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