Airbag control unit with part number 5QF959655AE

What does the airbag control unit 5QF959655AE do?

The airbag control unit 5QF959655AE coordinates the restraint system (SRS) in Seat. It evaluates the crash sensors, decides on airbags and seatbelt pretensioners within milliseconds in an accident, and checks the system continuously. If it detects a fault, it indicates this via the airbag warning light. After an accident it stores crash data and locks itself.

The crash sensors transmit their measurements without interruption. The control unit processes them so quickly that the decision is made in time in an emergency.

The monitoring is continuous operation in the background, which you do not have to operate.

Why does the control unit 5QF959655AE fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; a standard diagnostic tool does not erase it. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plugs, and voltage spikes from a weak battery or a jump start.

Crash data arises from the accident and remains in the unit. The fault therefore persists until the control unit is repaired. At Airbag24 stored crash data is deleted.

The other causes act over a long period. Electronics age, solder joints can go cold, and moisture or corrosion weakens the contact at the plugs. Voltage spikes also strain the electronics.

How can you tell that the 5QF959655AE is defective?

The airbag warning light in the instrument cluster, which stays on permanently or intermittently, indicates a defect on the 5QF959655AE. In addition there is an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light is the most important indicator and sits directly in your field of view. It shows the defect as soon as it occurs.

If you notice any of these signs, have the system checked promptly.

Which vehicles is the 5QF959655AE fitted in?

The control unit 5QF959655AE is fitted in these vehicles: Seat Arona 1 Facelift (from 2021) and 1 (2017-2021); Seat Ibiza 5 [6F] (2017-2021) and 5 [6F] Facelift (from 2021).

The list shows the vehicles that Airbag24 has on record for this part number.

• Seat Arona 1 Facelift (from 2021)
• Seat Arona 1 (2017-2021)
• Seat Ibiza 5 [6F] (2017-2021)
• Seat Ibiza 5 [6F] Facelift (from 2021)

Both checks make sense. Compare the part number on the label of the removed unit with this page; this only confirms that it is the right unit. Have the fault memory read out beforehand, because only that 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 5QF959655AE work?

First have the fault memory read out and enclose the log, then disconnect the battery and remove the control unit. Create the repair order online and send the unit in well packed. Processing at Airbag24 takes 3–4 working days as a rule.

The sequence is prescribed for safety reasons. The control unit is removed only after the battery has been disconnected.

Airbag24 checks the unit, replaces defective components, deletes stored crash data and carries out a function test. The processing time applies only to this work.

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 5QF959655AE get to Airbag24?

You send the control unit 5QF959655AE as a parcel or 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 so that it withstands knocks.