Airbag control unit with part number 285583394R

What does the airbag control unit 285583394R do?

For Renault, the airbag control unit 285583394R forms the central control of the restraint system (SRS). In a crash, it analyses the sensor signals and determines within milliseconds which airbags and seatbelt pretensioners to trigger.

It also monitors the system continuously and shows faults via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself.

Why does the control unit 285583394R fail?

The most common cause for 285583394R is crash data stored after an accident, even if no airbag was triggered. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool; Airbag24 takes care of this during the repair.

The other causes in detail:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 285583394R is defective?

A fault in the 285583394R shows up as signs in the instrument cluster and on the diagnostic tool. The airbag warning light may stay on constantly or only intermittently.

The following signs point to this:

• airbag warning light is on
• display in the instrument cluster with a fault notice
• diagnostic tool cannot find the control unit
• fault memory entry remains

In an emergency, airbags and seatbelt pretensioners may fail to deploy. If you find any of these, a check is advisable.

Which vehicles is the 285583394R fitted in?

The control unit 285583394R is fitted in this vehicle from Renault: Renault Mégane III (2008-2016). This assignment applies to exactly this part number.

The vehicles covered by this assignment are listed here:

• Renault Mégane III (2008-2016)

Comparing the part number on the label of the removed unit with this page confirms that you have the right unit. It does not, however, answer the question of the cause. Therefore, have the fault memory read out beforehand; only this result shows whether the control unit is defective or whether 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 285583394R work?

At Airbag24, checking, repairing and testing the 285583394R usually take 3–4 working days. First you read out the fault memory, then disconnect the battery and only then remove the control unit. Next, create a repair order online and pack the unit well for sending.

Airbag24 checks the control unit on the test bench, replaces defective components, erases stored crash data and carries out a functional test. You then receive your own unit back.

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 285583394R get to Airbag24?

You can send in the control unit 285583394R as a parcel or book a UPS collection for an extra charge. The return after the repair is made by UPS.

Pack the unit securely against impact and put the printed repair order in the parcel.