Airbag control unit with part number 6Q0909605AC

What does the airbag control unit 6Q0909605AC do?

The control unit is the central hub of the restraint system (SRS) in the Volkswagen. It processes the signals from the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system as a whole continuously. If it detects a fault, it indicates this via the airbag warning light.

The electronics keep working in the background, even when the vehicle is not being moved.

If an accident occurs, the control unit secures crash data and then locks itself.

Why does the control unit 6Q0909605AC fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. Ordinary diagnostic tools cannot erase it; Airbag24 takes care of that during the repair. Other causes include ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes from a weak battery or jump-starting.

An impact leaves this data even when no deployment takes place. It describes the event, but gives no information about the condition of each component.

The other triggers act over time: ageing and damp wear down contacts, and unstable voltage puts strain on the electronics.

How can you tell that the 6Q0909605AC is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently as soon as the control unit has stored a fault. An error message in the instrument cluster, a diagnostic tool without a connection, and a fault memory that cannot be cleared are further signs.

These signs are a clear signal. In an emergency, airbags and seatbelt pretensioners may fail to deploy, so have the cause investigated.

Which vehicles is the 6Q0909605AC fitted in?

Which vehicles belong to this number is recorded in our overview; equipment can cause differences. The 6Q0909605AC is fitted in these vehicles: Volkswagen Beetle New Beetle (2005-2010) and New Beetle (1997-2005).

You will find the overview here as a list:

• Volkswagen Beetle New Beetle (2005-2010)
• Volkswagen Beetle New Beetle (1997-2005)

Comparing the part number on the label with this page ensures that it is the right unit; it does nothing more. Having the fault memory read out, on the other hand, shows whether the control unit itself or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1C0 909 605 A, 6Q0 909 605 A, 6Q0909605AF, 6Q0909605AG.

How does the repair of the 6Q0909605AC work?

First the fault memory is read out with the enclosed log, then the battery is disconnected and finally the removal takes place. At Airbag24, processing usually takes 3–4 working days.

Online, you create the repair order and send the unit in well packed.

At Airbag24 the unit is checked, defective components are repaired if necessary, stored crash data is erased and a function test is run. Afterwards, your own unit is returned.

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 6Q0909605AC get to Airbag24?

Your unit reaches Airbag24 as a parcel or by UPS collection, which you book for an extra charge. UPS handles the return.

Enclose the printed repair order with the parcel; the control unit must be packed shockproof.