Airbag control unit with part number 285585428R

What does the airbag control unit 285585428R do?

The airbag control unit 285585428R controls the restraint system (SRS) of Renault and evaluates the signals from the crash sensors. In an accident, it decides within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident, it stores crash data and locks itself.

The electronics check their function continuously. If they detect a fault, they indicate it via the airbag warning light in the instrument cluster.

Why does the control unit 285585428R fail?

After an accident, stored crash data are regarded as the most common cause with 285585428R, even if no airbag has triggered. A normal diagnostic tool cannot delete them, whereas Airbag24 deletes them during repair. Other possible causes include aged components, cold solder joints, moisture and corrosion, as well as voltage spikes.

The other causes concern the electronics themselves and their connections: aged components, cold solder joints, and moisture and corrosion on plug connections.

Voltage spikes, for example from a weak battery or a jump start, can also cause faults. Which cause applies is only shown by the examination.

How can you tell that the 285585428R is defective?

A defect in the 285585428R shows up as an airbag warning light in the instrument cluster that stays on permanently or intermittently. In addition, there are a fault message in the instrument cluster, a missing connection of the diagnostic tool and a fault memory that cannot be cleared.

Look out for these signs:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without a connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly not deploy. Have the indication checked promptly.

Which vehicles is the 285585428R fitted in?

The airbag control unit 285585428R is fitted in these vehicles: Renault Mégane III (2008-2016). You can check whether your car is included by comparing it with the part number on the removed unit.

The following vehicles are on record for this control unit:

• Renault Mégane III (2008-2016)

Compare the part number on the label of the removed unit with this page; this only confirms that you have the correct unit. Have the fault memory read out beforehand, as only then does it become clear whether the control unit itself is defective or a cable or plug 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 285585428R work?

When repairing the 285585428R, you first read out the fault memory, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the unit, packed well.

You enclose the log of the fault memory with the unit. If you want the crash data deleted, get in touch with Airbag24 briefly before sending the unit in.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and runs a functional test. Processing usually takes 3–4 working days. Afterwards, you receive your own, repaired unit back.

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 285585428R get to Airbag24?

You send the control unit 285585428R as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

You place the printed repair order in the parcel and pack the unit shock-resistant.