Airbag control unit with part number 1C0909601F

What does the airbag control unit 1C0909601F do?

Within the restraint system (SRS) of Skoda, the airbag control unit 1C0909601F evaluates the sensor signals. In a crash it decides within a few milliseconds which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. It reports faults via the airbag warning light. After a crash it stores crash data and locks itself.

The manufacturer's part number Continental 5WK44438 is additionally marked on the housing. The monitoring runs in the background as long as there is a power supply, and every deviation is recorded in the fault memory.

The unit is thus both trigger and event store in one.

Why does the control unit 1C0909601F fail?

The most common cause is crash data stored after an accident, even if no airbag has been triggered; these cannot be erased with a normal diagnostic tool. Further causes are aged electronics, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or a jump start.

A registered event does not yet say whether the unit is broken. The fault memory evaluation is needed for that.

The other causes develop over time in operation. Solder joints become brittle, and moisture at plug connections leads to corrosion.

How can you tell that the 1C0909601F is defective?

A defect first shows up at the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Added to this are a fault message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

These warning signs can occur individually or together:

• Airbag warning light that lights up or intermittently comes on
• Fault message in the instrument cluster
• Diagnostic tool cannot establish a connection to the control unit
• Fault memory remains

In an emergency, airbags and seatbelt pretensioners may then possibly fail to deploy. Please check the condition promptly.

Which vehicles is the 1C0909601F fitted in?

The 1C0909601F is fitted in these vehicles: Skoda Fabia 1 [6Y] Facelift (2004-2007) and 1 [6Y] (1999-2004).

The following list shows the models at a glance.

• Skoda Fabia 1 [6Y] Facelift (2004-2007)
• Skoda Fabia 1 [6Y] (1999-2004)

Compare the part number on the label of the unit with this page so that you have the right unit in front of you. That alone does not establish whether a defect exists. So have the fault memory read out beforehand, because only this shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1C0 909 601, 1C0 909 601 A, 1C0 909 605 H, 1C0 909 605 K, 1C0909601C, 5WK43120.

How does the repair of the 1C0909601F work?

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

Airbag24 examines the unit on the test bench, repairs defective components and erases the stored crash data. The team then runs a function test, after which your own unit goes back 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 1C0909601F get to Airbag24?

The control unit goes to Airbag24 as a parcel, optionally with a UPS collection for an extra charge. After the repair, UPS brings the unit back to you.

Enclose the printed repair order with the parcel, and pack the unit shock-resistant.