Airbag control unit with part number 285586263R

What does the airbag control unit 285586263R do?

The airbag control unit 285586263R takes over control of the restraint system (SRS) in Renault. It analyses the crash sensors, determines in an accident which airbags and seatbelt pretensioners fire, and monitors the system continuously. Faults are reported to the airbag warning light; after an accident, it stores crash data and locks itself.

The system is a combination of sensors, control unit, seatbelt pretensioners and airbags. The control unit holds this combination together and checks it continuously.

A fault in this unit should therefore be taken seriously, because the vehicle's protective effect depends on it.

Why does the control unit 285586263R fail?

With 285586263R, the most common cause is that crash data was stored after an accident, even if no airbag was triggered; a standard diagnostic tool does not erase it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes. Airbag24 erases the crash data during the repair.

The crash data is only an indication of the event, not necessarily of damage inside the unit. The other causes include:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 285586263R is defective?

A defect in the 285586263R shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, and also as a fault message in the instrument cluster. A diagnostic tool with no connection to the control unit, or a fault memory whose entries cannot be erased, is a further sign. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The signs at a glance:

• airbag warning light showing, permanently or intermittently
• message in the instrument cluster
• the diagnostic tool fails to establish a connection
• fault memory whose entries cannot be erased

Only reading out the fault memory shows whether the fault lies in the unit or in the wiring. If you notice any of these signs, have the vehicle checked promptly.

Which vehicles is the 285586263R fitted in?

The airbag control unit 285586263R is fitted in these vehicles: Renault Mégane III (2008-2016). If your car is one of them, the unit is intended for that vehicle.

The list of vehicles:

• Renault Mégane III (2008-2016)

Compare the number on the label of the removed unit with this page. This only shows whether it is the right unit. Have the fault memory read out beforehand, because only it reveals whether the control unit itself is defective or a plug 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 285586263R work?

First have the fault memory read out and enclose the log, then disconnect the battery and afterwards remove the control unit 285586263R. Then create the repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, replaces defective components and carries out a function test.

Afterwards, the unit is returned 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 285586263R get to Airbag24?

You can either send the control unit 285586263R in as a parcel or book a UPS collection for an extra charge. After the repair, it is returned via UPS.

The printed repair order goes into the parcel; secure the unit so that it is shockproof.