Airbag control unit with part number 6Q0909605R

What does the airbag control unit 6Q0909605R do?

The airbag control unit 6Q0909605R is the control unit of the restraint system (SRS) at Seat. It processes the measured values from the crash sensors, determines in a collision which airbags and seatbelt pretensioners are triggered, and monitors the entire system.

While driving, it checks the system in the background. Any deviations found are stored in the fault memory, and the airbag warning light informs the driver.

After an accident the unit writes crash data and locks itself.

Why does the control unit 6Q0909605R fail?

Most often the cause lies in crash data stored after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, as well as voltage peaks, are also possible causes.

A normal diagnostic tool does not remove the crash data. Airbag24 erases it as part of the repair.

The other causes develop over a longer period when moisture and temperature changes act on circuit boards and contacts. Voltage peaks, for example with a weak battery or a jump start, stress the electronics briefly instead.

How can you tell that the 6Q0909605R is defective?

A warning sign is the airbag warning light, which stays on in the instrument cluster permanently or intermittently. At the same time the instrument cluster reports a fault, the diagnostic tool cannot find the control unit, and the fault memory cannot be erased. In an emergency, airbags and seatbelt pretensioners may then not be able to deploy.

The warning light is one of the indications the system gives as soon as it detects a fault. If you see it, have the fault memory read out and decide on the next steps afterwards.

A communication fault during read-out can be caused by a plug or a cable. That is why only checking the fault memory will provide clarity.

Which vehicles is the 6Q0909605R fitted in?

The control unit 6Q0909605R is fitted in these vehicles: Seat Ibiza 3 [6L] (2002-2006) and 3 [6L] Facelift (2006-2008); Seat Cordoba 2 [6L] (2002-2008).

The vehicles are listed individually here:

• Seat Ibiza 3 [6L] (2002-2006)
• Seat Ibiza 3 [6L] Facelift (2006-2008)
• Seat Cordoba 2 [6L] (2002-2008)

Compare the part number on the label of the unit with this page; this only confirms that it is the correct unit. Have the fault memory read out beforehand, so that it becomes clear 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 5WK42800, 6Q0 909 605S, 6Q0909605AE.

How does the repair of the 6Q0909605R work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Afterwards you create a repair order online and send the unit in, well packed. At Airbag24, processing usually takes 3–4 working days.

At Airbag24 the unit is examined on the test bench, defective components are repaired and the crash data is deleted. A function test follows, and the unit is returned 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 6Q0909605R get to Airbag24?

A parcel is sufficient, or you can arrange for UPS to collect it for an extra charge. Airbag24 sends the unit back by UPS after the repair.

The printed repair order goes into the parcel, along with the control unit packed shock-proof.