Airbag control unit with part number 8200411009

What does the airbag control unit 8200411009 do?

The airbag control unit 8200411009 controls the restraint system of Renault as the SRS control unit. In an accident, it decides within milliseconds which airbags and seatbelt pretensioners to trigger, after evaluating the signals from the crash sensors. It also monitors the system continuously.

A fault is indicated via the airbag warning light. After an accident, it stores crash data and locks itself.

Why does the control unit 8200411009 fail?

The most common cause in the 8200411009 is crash data stored after an accident, even if no airbag has deployed. This data cannot be removed with a standard diagnostic tool. Other causes include ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

A standard diagnostic tool cannot remove the data, so the fault remains until the repair is carried out.

Other causes lie more in the component itself:

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 8200411009 is defective?

A defect in the 8200411009 can be recognised by the airbag warning light, which stays on permanently or intermittently, by a fault message in the instrument cluster, and by a diagnostic tool that cannot establish a connection with the control unit. In addition, the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may fail to deploy in an emergency.

The warning light runs a self-test at start-up. If it does not go out afterwards or comes back later, this is a signal that requires an inspection.

Without an inspection, it is not possible to say whether the control unit itself or its connections are affected.

Which vehicles is the 8200411009 fitted in?

The 8200411009 is fitted in these vehicles: Renault Mégane II (2002-2009). Whether the unit is defective is determined by the fault memory, not by the part number alone.

These vehicles are meant:

• Renault Mégane II (2002-2009)

A glance at the label on the removed unit is enough to compare it with this page, and then you know it is the right unit. However, have the fault memory read out beforehand, because the result shows 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 8200257044E, 8200337245, 8200337247, 8200412026, 8200412026B, 8200682381.

How does the repair of the 8200411009 work?

First have the fault memory read out and add the log to the parcel. Then disconnect the battery and remove the control unit. Then create the repair order online and send the unit in, well packed.

This sequence is mandatory for safety reasons, so removal only takes place after the battery has been disconnected.

At Airbag24, the unit goes on the test bench. Defective components are replaced, stored crash data is deleted and a functional test is carried out. Processing at Airbag24 usually takes 3–4 working days. 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 8200411009 get to Airbag24?

Either you send the control unit 8200411009 as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Put the printed repair order into the parcel, and pack the unit shock-proof.