Airbag control unit with part number 285589637R

What does the airbag control unit 285589637R do?

The airbag control unit 285589637R is the central control unit of the restraint system (SRS) for Renault. It reads the crash sensors and, in a crash, selects the airbags and seatbelt pretensioners to be triggered within fractions of a second, while continuously monitoring the system.

If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster.

A crash causes the unit to store crash data and lock itself.

Why does the control unit 285589637R fail?

The most common cause on the 285589637R is crash data stored after an accident, even if no airbag has triggered. Other causes include aged components, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

A standard diagnostic tool cannot delete the crash data. Airbag24 takes care of this during the repair.

The following causes are possible:

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

How can you tell that the 285589637R is defective?

The airbag warning light in the instrument cluster lights up constantly or only intermittently, indicating a defect in the 285589637R. Accompanying this, a fault message may appear in the instrument cluster, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared.

In this case, the airbags and seatbelt pretensioners may fail to trigger in an emergency. Have the warning light checked promptly.

Which vehicles is the 285589637R fitted in?

The control unit 285589637R is installed in this Renault vehicle: Renault Mégane III (2008-2016). This assignment shows in which car this exact unit was installed.

Here you can see the vehicles that belong to this number:

• Renault Mégane III (2008-2016)

Compare the part number on the removed unit with this page to make sure you have the right unit. Have the fault memory read beforehand, because only this 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 285589637R work?

At Airbag24, checking, repairing and testing usually take 3–4 working days. First you read out the fault memory and attach the log, then you disconnect the battery and remove the 285589637R. Afterwards you create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a functional test. Afterwards, your own 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 285589637R get to Airbag24?

You can send in the control unit 285589637R as a parcel. Alternatively, book a UPS collection for an extra charge, and Airbag24 returns it to you by UPS after the repair.

Put the printed repair order into the parcel and pack the unit shockproof.