Airbag control unit with part number 1K0909605AD

What does the airbag control unit 1K0909605AD do?

The airbag control unit 1K0909605AD coordinates the SRS of Volkswagen. It receives the messages from the crash sensors, decides within milliseconds in a crash on the deployment of airbags and seatbelt pretensioners, and monitors the system continuously.

It indicates faults in the system via the airbag warning light. After an accident it stores crash data and locks itself; only the repair lifts the lock.

Why does the control unit 1K0909605AD fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool does not erase it. In addition there are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery.

Ageing and cold solder joints affect the contacts in the unit. Over time, connections can weaken, even without an accident having happened.

Moisture and corrosion at plugs disturb signal transmission, while a weak battery or jump-starting burdens the power supply. Airbag24 erases the crash data during the repair.

How can you tell that the 1K0909605AD is defective?

A defect first shows through the airbag warning light in the instrument cluster, which stays lit or lights up at times. A fault message may also appear, the diagnostic tool may find no contact with the control unit, or the fault memory cannot be cleared.

Then airbags and seatbelt pretensioners may fail to deploy in an emergency. The warning light is therefore a clear sign that the system must be checked.

Which vehicles is the 1K0909605AD fitted in?

The 1K0909605AD is fitted in these vehicles: Volkswagen Jetta 5 (2005-2010). Compare your car with this selection before you remove anything.

The list comes from our records for this number:

• Volkswagen Jetta 5 (2005-2010)

Comparing the part number with the label of the removed unit only makes sure you have the right unit in front of you. Whether the control unit is actually defective is shown only by a fault memory read out in advance; a plug or cable may turn out to be the cause.

For the same vehicles, we also repair control units with the part numbers 1K0 909 605 T, 1K0909605AB, 1K0909605H, 1K0909605P, 1K0909605R.

How does the repair of the 1K0909605AD work?

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

Airbag24 checks the control unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Afterwards Airbag24 sends you your own unit back.

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 1K0909605AD get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair UPS brings it back.

A shock-proof packaging protects the control unit, and you enclose the printed repair order with the parcel.