Airbag control unit with part number 5QF959655BK

What does the airbag control unit 5QF959655BK do?

The airbag control unit 5QF959655BK is the central control unit of the restraint system (SRS) for Seat. It checks the crash sensors, calculates in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system throughout. Detected faults are shown via the airbag warning light.

After an accident it stores crash data and locks itself.

For this purpose, the control unit processes the measured values of the sensors, which record deceleration.

Why does the control unit 5QF959655BK fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. With this control unit, deleting the crash data is often not possible; if you want it deleted, contact Airbag24 briefly before sending the unit in.

Aged electronic components, cold solder joints and moisture at plug connections are also among the causes.

Voltage spikes, for example from a weak battery or a jump-start, can additionally stress the unit.

Airbag24 then checks the part number before you send the unit in.

How can you tell that the 5QF959655BK is defective?

The airbag warning light lights up permanently or at times, and an error message appears in the instrument cluster. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

• Airbag warning light on permanently or at times
• Error message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

In this case, airbags and seatbelt pretensioners may not fire in an emergency.

Which vehicles is the 5QF959655BK fitted in?

With Seat, the part number 5QF959655BK is fitted in these vehicles: Seat Ibiza 5 [6F] (2017-2021) and 5 [6F] Facelift (from 2021). The information refers to the assignment of the part number.

The list of assigned models is as follows:

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

Compare the part number on the label of the removed unit with this page; that way you can be sure you have the right unit. Have the fault memory read out beforehand, because 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 5QF959655BK work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the well-packed unit in. Airbag24 checks it on the test bench, replaces defective components and carries out a function test; processing takes 3–4 working days as a rule.

If you want the crash data deleted, contact Airbag24 briefly before sending the unit in.

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 5QF959655BK get to Airbag24?

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

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