Airbag control unit with part number 285580053R

What does the airbag control unit 285580053R do?

The airbag control unit 285580053R is the central control unit of the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors, and in an accident it decides within milliseconds which airbags and seatbelt pretensioners are triggered. It monitors the system continuously and reports faults via the airbag warning light; after an accident, it stores crash data and locks itself.

The control unit keeps watch over the sensors, airbags, seatbelt pretensioners and the wiring. If it detects a deviation, it creates an entry in the fault memory.

Because it has to react in fractions of a second in an emergency, it checks itself continuously.

Why does the control unit 285580053R fail?

With the 285580053R, the most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase them. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or a jump start.

The other causes concern components and connections: electronics age, cold solder joints disrupt the contact, and moisture with corrosion attacks plug connectors.

Which of these causes is present only becomes clear when the fault memory is checked.

How can you tell that the 285580053R is defective?

On the 285580053R, a defect shows up as the airbag warning light on the instrument cluster lighting up permanently or intermittently. A fault message also appears on the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

If the control unit is affected, airbags and seatbelt pretensioners may not deploy in an emergency. If the warning light is on, have the system checked for that reason.

The warning light therefore shows a defect directly in the vehicle.

Which vehicles is the 285580053R fitted in?

A control unit is only fitted in certain vehicles. The 285580053R is fitted in these vehicles: Renault Scénic III (2009-2016); Renault Grand Scénic III (2009-2016).

Here are the vehicles in detail:

• Renault Scénic III (2009-2016)
• Renault Grand Scénic III (2009-2016)

To compare, proceed as follows: first compare the part number on the label of the removed unit with this page; this only ensures that it is the correct unit. Also have the fault memory read out beforehand, because only that 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 284100-22023, 285582617R, 285589605R, 285589834R, 285906352R, 44292445.

How does the repair of the 285580053R work?

For safety reasons, first have the fault memory read out and attach the log, before you disconnect the battery and only then remove control unit 285580053R. Then create a repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, repairs the faults in the affected components, erases the stored crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. Afterwards, your own, repaired 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 285580053R get to Airbag24?

You send control unit 285580053R in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns your unit by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof.