Airbag control unit with part number 8200411004

What does the airbag control unit 8200411004 do?

The airbag control unit 8200411004 evaluates the signals from the crash sensors in the restraint system of Renault. Within milliseconds it decides which airbags and seatbelt pretensioners fire, and it monitors the system continuously. It reports a fault via the airbag warning light.

The monitoring covers sensors, seatbelt pretensioners and airbag modules alike.

After an accident, the unit stores crash data and locks itself. For fault finding, this data in the memory is important.

Why does the control unit 8200411004 fail?

The most common cause is stored crash data left behind after an accident, even if no airbag fired; a normal diagnostic tool cannot delete it. Other causes are component ageing, dry solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a jump start.

Crash data is therefore the most obvious starting point when looking for the fault.

Electronics age, and dry solder joints create an unsteady contact. Moisture and corrosion on plug connections add to this and disturb the contact.

Voltage spikes from a weak battery or a jump start put additional strain on the electronics.

How can you tell that the 8200411004 is defective?

A defect is first noticed through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Fault messages accompany it, the diagnosis breaks off, and the fault memory remains. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The signs at a glance:

• Airbag warning light that stays on permanently or intermittently
• Fault message that appears in the instrument cluster
• Diagnostic tool that cannot establish contact with the control unit
• Fault memory that cannot be reset

Please have these signs checked promptly.

Which vehicles is the 8200411004 fitted in?

The control unit 8200411004 is fitted in these vehicles: Renault Mégane II (2002-2009). The assignment applies to the part number as a whole.

These vehicles are on record:

• Renault Mégane II (2002-2009)

A label comparison with this page ensures that you have the correct unit; it does nothing more. Have the fault memory read out before removal. Only this log answers the question of whether the control unit is defective or whether a connector 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 8200411004 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Afterwards create the repair order online and send the well-packed unit in. Airbag24 tests, repairs, clears crash data and checks the unit; this processing takes 3–4 working days as a rule.

This sequence is mandatory for safety reasons.

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 8200411004 get to Airbag24?

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

Include the printed repair order with the parcel, and the unit is packed shock-proof.