Airbag control unit with part number 285581676R

What does the airbag control unit 285581676R do?

The airbag control unit 285581676R manages the safety chain for airbags and seatbelt pretensioners in Renault; the crash sensors supply it with the data it needs. Faults appear on the airbag warning light. After a crash, it stores crash data and locks itself.

The checking runs continuously while the vehicle is being driven.

The unit stores detected faults in the fault memory, so that they become visible during a diagnosis.

Why does the control unit 285581676R fail?

Causes with the 285581676R: the most frequent trigger is a crash data record from an accident, even if no airbag has deployed. Aged components, moisture and voltage spikes are also possible causes.

Crash data remains in the unit after an accident. A normal diagnostic tool cannot erase it.

The control unit then reports faults, even if the electronics are in order. Corrosion at plug connectors and cold solder joints are further causes.

Voltage spikes, for example from a weak battery or a jump start, place a load on the unit. Which cause applies in an individual case is only determined by the inspection.

How can you tell that the 285581676R is defective?

Signs at the 285581676R: the airbag warning light in the instrument cluster stays on permanently or intermittently. An error message may also appear in the instrument cluster, or the diagnostic tool cannot reach the control unit. In an actual crash, the airbags and seatbelt pretensioners may then not deploy.

These signs indicate a fault:

• The airbag warning light stays on permanently or flickers
• An error message appears in the instrument cluster
• The diagnostic tool cannot reach the control unit
• The fault memory remains after being cleared

If you notice any of these signs, have the vehicle examined promptly.

Which vehicles is the 285581676R fitted in?

The 285581676R is fitted in these vehicles: Renault Mégane III (2008-2016). The assignment is shown in the list below.

The following vehicles are assigned to this part number:

• Renault Mégane III (2008-2016)

Compare the part number on the label of the unit with this page, and you will know that it is the correct unit. Whether the control unit itself is defective is only shown by the fault memory once it has been read out. A connector or a cable can also be the cause.

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

How does the repair of the 285581676R work?

Procedure for repairing the 285581676R: have the fault memory read out, include the log, then disconnect the battery; only after that remove the control unit. Create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24, the unit is checked on the test bench, defective components are replaced, stored crash data is erased and a functional test is carried out. Afterwards the unit is returned to you.

The order of the steps is there for your safety. 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 285581676R get to Airbag24?

Transport of the 285581676R: you choose either the parcel or a UPS collection, which you book for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order in the parcel. Pad the unit well.