Airbag control unit with part number 8200412043

What does the airbag control unit 8200412043 do?

The airbag control unit 8200412043 acts as the central control unit of the restraint system (SRS) of Renault. It checks the crash sensors, decides on triggering airbags and seatbelt pretensioners within milliseconds in an accident, and secures crash data after an accident, after which it locks itself.

During operation the unit monitors the system continuously. Faults are shown via the airbag warning light in the instrument cluster.

The lock is lifted only by the repair.

Why does the control unit 8200412043 fail?

For the 8200412043, stored crash data after an accident is the most common cause, even if no airbag has triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase this crash data. They therefore remain in the memory until Airbag24 removes them during the repair.

Electronic components age, and moisture attacks plug connections. Cold solder joints are a further weak point.

Voltage spikes arise, for example, from a weak battery or jump-starting. Only the inspection shows which cause is present.

How can you tell that the 8200412043 is defective?

The airbag warning light in the instrument cluster lights up at the 8200412043 permanently or intermittently. Also conspicuous are an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

The airbag warning light is the clearest signal for the driver. It stays on or keeps coming back on as soon as the system registers a fault.

If the diagnostic tool cannot connect to the control unit, the cause remains open for the time being. In an emergency, airbags and seatbelt pretensioners may not trigger.

Which vehicles is the 8200412043 fitted in?

The airbag control unit 8200412043 is fitted in these vehicles: Renault Scénic II (2003-2009); Renault Grand Scénic II (2003-2009). Whether your vehicle is among them can be checked in advance. A part number alone does not prove it.

The models are listed below:

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

Comparing the part number on the label of the removed unit with this page only ensures that you have the correct unit. Have the fault memory read out in addition. Only the log shows whether the control unit itself is affected or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285583229R, 603989700, 607993600, 8200340431, 8200411013, 8200412042A.

How does the repair of the 8200412043 work?

Have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 8200412043. Create a repair order online and send the unit in well packed. Work at Airbag24 usually takes 3–4 working days.

Before sending, the steps are therefore: reading out with log, disconnecting the battery and then removing the unit.

Airbag24 examines the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. The unit then comes back to you. 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 8200412043 get to Airbag24?

You send the control unit 8200412043 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel, and you pack the unit shock-proof.