Airbag control unit with part number 8200344250

What does the airbag control unit 8200344250 do?

The airbag control unit 8200344250 is the central control unit of the restraint system (SRS) for Renault. It reads the signals from the crash sensors, selects in a crash within milliseconds the airbags and seatbelt pretensioners that are to fire, and monitors the system permanently. After a crash it stores crash data and locks itself.

The unit indicates fault states via the airbag warning light in the instrument cluster.

The control works without interruption in the background. That is part of its task, because every decision has to be right in an emergency.

Why does the control unit 8200344250 fail?

The most common cause is crash data after an accident, even if no airbag fired; a normal diagnostic tool cannot erase it. Further causes are ageing components, cold solder joints, moisture at plug connectors and voltage spikes.

The unit records crash data itself at the time of the incident. Whether an airbag fired makes no difference to the entry.

Electronic components age, and solder joints can go cold. Moisture penetrates plug connectors and leads to corrosion, which disturbs the contact.

Voltage spikes, for example from a weak battery or jump-starting, stress the circuitry. Which cause applies is shown only by the examination of the unit.

How can you tell that the 8200344250 is defective?

The airbag warning light in the instrument cluster stays on constantly or intermittently, an error message appears, the diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then possibly not deploy in an emergency.

Anyone who keeps an eye on the light notices faults early. If it stays on, have the fault memory read out promptly.

If no connection to the diagnostic tool can be made, the communication with the control unit is affected. That can be due to the unit itself or to the wiring between them.

Which vehicles is the 8200344250 fitted in?

This list answers the question about the vehicle. For Renault, the control unit 8200344250 is fitted in these vehicles: Renault Scénic II (2003-2009); Renault Mégane II (2002-2009); Renault Grand Scénic II (2003-2009).

The vehicles are listed here as an overview:

• Renault Scénic II (2003-2009)
• Renault Mégane II (2002-2009)
• Renault Grand Scénic II (2003-2009)

Two tips in advance: First, compare the part number on the unit with this page. That only confirms that it is the right unit. Second, have the fault memory read out, because only that shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 603989700, 607993600, 8200257044E, 8200321999, 8200337245, 8200337247.

How does the repair of the 8200344250 work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit 8200344250. Then create the repair order online and send in the packed unit.

Airbag24 examines the unit on the test bench, replaces defective components, erases stored crash data and performs a function test. For checking, repairing and testing, Airbag24 usually allows 3–4 working days.

Your own unit then comes back to you. The order of the steps 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 8200344250 get to Airbag24?

Either you send the control unit 8200344250 in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after repair.

Enclose the printed repair order and pack the unit shock-proof.