Airbag control unit with part number 8200682390

What does the airbag control unit 8200682390 do?

The airbag control unit 8200682390 is the control unit of the restraint system (SRS) of Renault. It evaluates the signals from the crash sensors and decides in a crash which airbags and seatbelt pretensioners trigger. It monitors the system permanently and displays faults via the airbag warning light.

The decision has only milliseconds, so the evaluation runs quickly and automatically.

After an accident the unit creates crash data and locks itself.

Why does the control unit 8200682390 fail?

Stored crash data from an accident are the most common cause, even if no airbag has been triggered. An ordinary diagnostic tool cannot erase them. Other causes are ageing electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data in the unit are not visible to the keeper, which is why their role in fault finding is often underestimated. They remain in the memory even when the vehicle is used normally again.

Ageing components and solder joints that have gone cold can cause faults. Moisture and corrosion on plug connections add to this.

Voltage spikes occur, for example, with a weak battery or when jump-starting. An unstable on-board electrical system throws the evaluation off balance.

How can you tell that the 8200682390 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message may appear in the instrument cluster. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may not be able to trigger in an emergency.

The light is the visible sign that something is wrong in the system. Do not accept it as normal.

Which vehicles is the 8200682390 fitted in?

The 8200682390 works in these vehicles: Renault Mégane II (2002-2009).

The list below names the vehicles:

• Renault Mégane II (2002-2009)

Compare the part number on the label of the removed unit with this page, so that you have the correct control unit. The fault memory must be read out beforehand, because only it shows whether the control unit is defective or 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 8200682390 work?

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

Airbag24 inspects the unit on the test bench, repairs defective components and erases the stored crash data. A function test follows before the unit is sent back. Processing usually takes 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 8200682390 get to Airbag24?

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

Enclose the printed repair order in the parcel and pack the control unit shockproof.