Airbag control unit with part number 8200481142

What does the airbag control unit 8200481142 do?

The unit 8200481142 coordinates the restraint system (SRS) of Renault. It reads the crash sensors, calculates in an emergency within milliseconds which airbags and seatbelt pretensioners fire, and keeps the entire system in view.

Monitoring runs without interruption. If the control unit detects a fault, it creates an entry in the fault memory and shows the problem via the airbag warning light.

After an accident, it secures the crash data and remains locked afterwards.

Why does the control unit 8200481142 fail?

The most common cause is crash data stored after an accident, even without a triggered airbag; a normal diagnostic tool cannot erase it. Aged components, contact problems and voltage spikes also play a role.

Apart from the crash data, the following further causes generally come into consideration:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or jump-starting

Which of these causes applies in an individual case only becomes clear when the unit is examined. From the outside, a fault in the connector or cable can look just like a defect in the control unit.

How can you tell that the 8200481142 is defective?

The airbag warning light in the instrument cluster lights up constantly or only intermittently, and an error message may also appear in the instrument cluster. In addition, the diagnostic tool gets no connection to the control unit or the fault memory cannot be cleared; then airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light is the first sign you must watch for. It shows that something is wrong in the system, but it does not say what is affected.

A diagnostic tool that cannot establish a connection points to a disturbance in the control unit or its wiring. Only a read-out clarifies this.

Which vehicles is the 8200481142 fitted in?

This assignment applies to the part number 8200481142. The control unit 8200481142 is fitted in these vehicles: Renault Mégane II (2002-2009).

The list in detail:

• Renault Mégane II (2002-2009)

Before you send the unit in, follow this procedure. First compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Also have the fault memory read out, because only the result shows 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 8200481142 work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Next, create a repair order online and send in the carefully packed unit. Airbag24 checks it on the test bench, replaces defective components, erases stored crash data and carries out a function test, after which the unit goes back to you.

Removal follows a fixed order for safety reasons: the control unit is removed only after the fault memory has been read out and the battery disconnected.

Processing at Airbag24 usually takes 3–4 working days. This period covers only checking, repairing and testing.

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 8200481142 get to Airbag24?

Either you send the unit 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.

Include the printed repair order in the parcel. Pack the unit shockproof so that it survives transport.