Airbag control unit with part number 285581384R

What does the airbag control unit 285581384R do?

The airbag control unit 285581384R controls the restraint technology in Renault: it evaluates the crash sensors, triggers the appropriate airbags and seatbelt pretensioners in a crash, and monitors the system continuously. Faults appear on the airbag warning light. After a crash, it stores crash data and locks itself.

Without this continuous evaluation, it would remain unclear whether the system is ready in an actual crash.

The unit stores detected faults in the fault memory, where they can be read out during a diagnosis.

Why does the control unit 285581384R fail?

Causes with the 285581384R: stored crash data is regarded as the most common cause, even if no airbag has deployed. Aged components, moisture at plug connectors and voltage spikes are also involved.

Stored crash data causes the control unit to report faults, even though the electronics themselves may be in order. As long as the data stays in memory, the diagnosis remains difficult.

Cold solder joints, corrosion in the connectors and voltage fluctuations add to the causes. A weak battery or a jump start can produce voltage spikes that damage the unit.

How can you tell that the 285581384R is defective?

Signs at the 285581384R: the airbag warning light in the instrument cluster reports a fault as soon as it stays on permanently or intermittently. An error message in the instrument cluster may appear in addition. In an actual crash, it is then possible that the airbags and seatbelt pretensioners do not deploy.

The warning light is the clearest sign. Have the system checked promptly.

A missing connection to the diagnostic tool is also a warning sign, as is a fault memory that cannot be cleared.

Which vehicles is the 285581384R fitted in?

The 285581384R is fitted in these vehicles: Renault Mégane III (2008-2016). The assignment is shown in the list below.

The vehicles assigned to this part number can be found in the list.

• Renault Mégane III (2008-2016)

Compare the part number on the label of the unit with this page. This only ensures that you have the correct unit. It is better to have the fault memory read out before removal, as it 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 285581365R, 8200962388, 985105478R.

How does the repair of the 285581384R work?

Procedure for repairing the 285581384R: have the fault memory read out first, include the log in the parcel, then disconnect the battery and only then remove the control unit. Next, create a repair order online before sending the unit in; processing at Airbag24 usually takes 3–4 working days.

At Airbag24, the unit is checked on the test bench, defective components are replaced, stored crash data is erased and a functional test is carried out. Afterwards it returns to you.

The order matters, especially during removal. 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 285581384R get to Airbag24?

Transport of the 285581384R: the shipment is made as a parcel or via a UPS collection, which you book for an extra charge. Airbag24 sends the repaired unit back by UPS.

Enclose the printed repair order in the parcel. Pack the unit shockproof.