Airbag control unit with part number 285587373R

What does the airbag control unit 285587373R do?

The airbag control unit 285587373R controls the restraint system (SRS) for Renault. To do this, it evaluates the signals from the crash sensors and, in the event of an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the system continuously. If it detects a fault, it displays it via the airbag warning light in the instrument cluster. It is one of the safety-relevant control units in the vehicle, because it has to react without any loss of time in an emergency. Airbags and seatbelt pretensioners are only as effective as the control that triggers them.

After an accident, it stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 285587373R fail?

Stored crash data is the most common cause when the 285587373R fails, even if no airbag has deployed. Other causes include aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

A normal diagnostic tool cannot delete the crash data. Only the evaluation of the fault memory shows whether one of these causes is present.

How can you tell that the 285587373R is defective?

A defect in the 285587373R shows up as the airbag warning light, an error message in the instrument cluster, no connection to the diagnostic tool, or a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then not deploy in an emergency.

• The airbag warning light in the instrument cluster lights up permanently or intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot connect to the control unit.
• The fault memory cannot be cleared.

Even an intermittent light indicates a fault. The warning relates to the entire restraint system, not just a single airbag.

Which vehicles is the 285587373R fitted in?

The control unit 285587373R is used in vehicles of the Renault brand. It is fitted in these vehicles: Renault Mégane III (2008-2016).

The individual vehicles are shown in this list:

• 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. If the numbers do not match, clarify this before sending the unit in. Also have the fault memory read out before you remove the unit. Only this shows whether the control unit is defective or a connector or cable is the cause. A defect cannot be confirmed before the fault memory has been read.

For the same vehicles, we also repair control units with the part numbers 285581365R, 8200962388, 985105478R.

How does the repair of the 285587373R work?

For the repair of the 285587373R, first have the fault memory read out and include the report in the parcel. Then disconnect the battery, remove the control unit, create a repair order online and send in the securely packed unit. Processing at Airbag24 usually takes 3–4 working days.

This order is there for safety. Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. Then 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 285587373R get to Airbag24?

You send the 285587373R to Airbag24 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 so that it is shockproof.