Airbag control unit with part number 285581371R

What does the airbag control unit 285581371R do?

The airbag control unit 285581371R is the central control unit of the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors and decides within milliseconds in an accident on the triggering of airbags and seatbelt pretensioners. After an accident, it stores crash data and locks itself.

Monitoring runs constantly. If the unit detects a malfunction, it reports it via the airbag warning light in the instrument cluster.

Why does the control unit 285581371R fail?

After an accident, stored crash data are considered the most common cause with 285581371R, even if no airbag has triggered; other possible causes include ageing, moisture and voltage spikes. Airbag24, by contrast, deletes the crash data during repair.

A normal diagnostic tool cannot delete the crash data. The other causes lie in the electronics and their connections, for example in aged components, cold solder joints or corrosion on plug connections. Moisture can also attack plug connections.

Voltage spikes, for example from a weak battery or a jump start, can likewise cause faults. Which cause applies is only shown by the examination. In each individual case, it determines which trigger was responsible.

How can you tell that the 285581371R is defective?

A defect on the 285581371R shows up as an airbag warning light in the instrument cluster that stays on permanently or intermittently, accompanied by a fault message in the instrument cluster. Likewise, a missing connection of the diagnostic tool and a fault memory that cannot be cleared point to a malfunction.

The signs at a glance:

• 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 finding checked promptly.

Which vehicles is the 285581371R fitted in?

The airbag control unit 285581371R is fitted in these vehicles: Renault Mégane III (2008-2016). You carry out the comparison with your vehicle using the part number on the removed unit.

These vehicles are on record for the control unit:

• Renault Mégane III (2008-2016)

Comparing the part number on the label of the removed unit with this page only confirms that you have the correct unit. Have the fault memory read out beforehand, as only the result shows whether the control unit 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 285581371R work?

When repairing the 285581371R, you first read out the fault memory, disconnect the battery and only then remove the control unit. Processing at Airbag24 usually takes 3–4 working days.

Enclose the log of the fault memory with the unit, then create a repair order online and send it in well packed.

Airbag24 checks the unit on the test bench, replaces defective components and runs a functional test. 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 285581371R get to Airbag24?

You send the control unit 285581371R as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

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