Airbag control unit with part number 8200682412

What does the airbag control unit 8200682412 do?

The airbag control unit 8200682412 is the central control unit of the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

In everyday use the unit remains unobtrusive, because it does its work in the background. The constant self-check ensures that no delay occurs at the moment of an impact.

After an accident the unit stores crash data and then locks itself. This lock only ends with a repair.

Why does the control unit 8200682412 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot delete it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or jump-starting.

Stored crash data keeps the fault state in place. This also applies when the electronics themselves show no recognisable defect, which is exactly why the warning light can stay on after an incident.

The other causes can develop over a longer period. Moisture and corrosion attack plug contacts, and a voltage spike can load components without causing an immediate failure.

• Aged 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 8200682412 is defective?

A defect shows itself through the airbag warning light, which lights up permanently or intermittently, an error message in the instrument cluster, a missing connection to the diagnostic tool, and a fault memory that cannot be cleared.

With these signs, airbags and seatbelt pretensioners may not deploy in an emergency. The warning light should therefore not be ignored, but checked promptly.

The warning light reports the fault immediately. A separate search is not necessary.

Which vehicles is the 8200682412 fitted in?

The control unit 8200682412 is fitted in these vehicles: Renault Scénic II (2003-2009); Renault Grand Scénic II (2003-2009).

The vehicles assigned to the unit are listed here:

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

Compare the part number on the label of the removed unit with this page. This establishes that you have the right unit. Also have the fault memory read out before removal, because only the log shows whether the control unit itself is defective or whether a plug 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 8200682412 work?

First read out the fault memory and enclose the log. Then disconnect the battery and only then remove the control unit. Next create a repair order online and send the unit in well packed. Airbag24 processes it usually within 3–4 working days.

The order is mandatory for safety reasons, because the system must be de-energised during removal.

At Airbag24 the unit is checked on the test bench, defective components are repaired, stored crash data is removed and a function test is carried out. Afterwards your own unit goes back to you. The 3–4 working days refer to this check and repair.

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 8200682412 get to Airbag24?

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

Pack the unit shockproof and enclose the printed repair order.