Airbag control unit with part number 6Q0909605AL

What does the airbag control unit 6Q0909605AL do?

The airbag control unit 6Q0909605AL belongs to the restraint system (SRS) of Volkswagen and is its central control unit. It receives the signals from the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners to trigger, and monitors the entire system continuously. It reports faults via the airbag warning light.

In everyday use the unit works in the background and checks the connected components. It stores any irregularities in the fault memory.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 6Q0909605AL fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase this data. Other possible causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes from a weak battery or jump-starting.

The crash data therefore remains stored in the control unit until it is removed during the repair. A normal diagnostic tool is not a suitable means for this.

The other causes arise over time: electronics age, solder joints can stay cold, and moisture attacks plug connections. Voltage spikes, for example from jump-starting or a weak battery, also act on the unit.

How can you tell that the 6Q0909605AL is defective?

The airbag warning light in the instrument cluster stays on constantly or intermittently. In addition, an error message appears, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared. In this case, the airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

These signs suggest a fault in the restraint system, but they do not yet prove that the control unit itself is the cause. A plug or a cable can be behind them too.

Have the fault memory read out as soon as any of these signs appears.

Which vehicles is the 6Q0909605AL fitted in?

The assignment applies only to this part number, not to other control units from Volkswagen. The 6Q0909605AL is fitted in these vehicles: Volkswagen Beetle New Beetle (2005-2010) and New Beetle (1997-2005).

The vehicles in detail:

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

Compare the part number on the label of the removed unit with this page. This only tells you that you have the right unit. Also have the fault memory read out before removal, because only the log shows whether the control unit is defective or whether a plug or a 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 6Q0909605AL work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Only then create a repair order online and send the unit off, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, clears the stored crash data and carries out a function test. The repaired unit is then returned to you.

Checking, repairing and testing usually take 3–4 working days at Airbag24.

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 6Q0909605AL get to Airbag24?

You send the control unit as a parcel or, for an extra charge, book a UPS collection. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the unit securely against impact.