Airbag control unit with part number 285581088R

What does the airbag control unit 285581088R do?

The airbag control unit 285581088R is the central control unit of the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors and decides within a fraction of a second in the event of an accident which airbags and seatbelt pretensioners are triggered. It monitors the system continuously and reports faults via the airbag warning light.

The control unit monitors the system continuously, not only at the moment of an accident. The monitoring runs throughout the entire operation. After an accident, it stores crash data and locks itself.

Why does the control unit 285581088R fail?

Most often the cause is crash data stored after an accident, even if no airbag has been triggered; other causes can be aged components, cold solder joints, moisture, corrosion and voltage spikes. A normal diagnostic tool cannot delete the crash data; Airbag24 deletes it during the repair.

The following further causes are possible; only the fault memory shows which one applies.

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

How can you tell that the 285581088R is defective?

The airbag warning light in the instrument cluster lights up continuously or intermittently as soon as a defect is present. Fault messages in the instrument cluster accompany it, along with a diagnostic tool without a connection to the control unit and a fault memory that cannot be deleted.

In an emergency, the airbags and seatbelt pretensioners may then not trigger. Take this seriously and have the system checked promptly.

Which vehicles is the 285581088R fitted in?

The control unit 285581088R is fitted in these vehicles: Renault Mégane III (2008-2016). Whether your own unit fits is shown by comparing the part number on the label.

The vehicles are listed individually here:

• Renault Mégane III (2008-2016)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Have the fault memory read out beforehand, as only that shows whether the control unit is defective or whether a plug or a 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 285581088R work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and pack the unit well for sending.

Airbag24 checks the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. Your own unit is then returned to you. Processing at Airbag24 usually takes 3–4 working days.

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 285581088R get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shockproof, so that it survives transport undamaged.