Airbag control unit with part number 285585226R

What does the airbag control unit 285585226R do?

The airbag control unit 285585226R coordinates the restraint system (SRS) in Renault. It evaluates the crash sensors, decides in the event of an accident whether the airbags and seatbelt pretensioners fire, and monitors the system permanently. It shows detected faults on the airbag warning light; after an accident, it stores crash data and locks itself.

During driving, the unit checks whether the sensors supply signals and whether seatbelt pretensioners and airbags are connected and ready for use. It stores anomalies in the fault memory.

Because the protective effect depends on this control unit, take every suspicion of a defect seriously.

Why does the control unit 285585226R fail?

With 285585226R, the most common cause is stored crash data, even if no airbag has been triggered. A standard diagnostic tool cannot erase it, but Airbag24 erases it during the repair. Secondary causes that come into question are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Stored crash data proves that the unit has registered an event. It does not tell you whether there is additional damage inside.

Aged electronic components and cold solder joints are among the causes inside the unit. They can only be narrowed down by testing.

Moisture, corrosion and voltage spikes, by contrast, act on the system from outside, for example through a weak battery or a jump start. Which cause applies in the specific case is shown by the diagnosis.

How can you tell that the 285585226R is defective?

The airbag warning light in the instrument cluster indicates a fault by lighting up permanently or intermittently; a fault message in the instrument cluster appears alongside it. If the diagnostic tool has no connection to the control unit 285585226R, or the fault memory cannot be erased, this is a further indication. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light alone does not reveal which component is affected. However, it is the clearest sign that the system is no longer working properly, so have the vehicle checked promptly.

Which entries are in the fault memory is shown only by reading it out. Only then can it be reliably said whether plugs, wiring or the unit itself are the cause.

Which vehicles is the 285585226R fitted in?

The airbag control unit 285585226R is fitted in these vehicles: Renault Mégane III (2008-2016). Whether the unit matches your car is shown by comparing it with this information.

The following entry is on record:

• Renault Mégane III (2008-2016)

Compare the number on the unit with this page so that you can identify the right unit. Have the fault memory read out beforehand, because only this result decides 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 285585226R work?

You have the fault memory read out and enclose the log; only after that do you disconnect the battery. Then you remove the control unit 285585226R and create a repair order online before sending in the unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, erases the crash data, replaces defective components and carries out a function test. Afterwards your 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 285585226R get to Airbag24?

Sending it by parcel or a UPS collection booked for an extra charge brings the control unit 285585226R to Airbag24. The return after the repair is handled by UPS.

Put the printed repair order into the parcel, along with shockproof packaging.