Airbag control unit with part number 285583795R

What does the airbag control unit 285583795R do?

The airbag control unit 285583795R is the central hub of the SRS for Renault: it evaluates the crash sensors, decides in an accident within milliseconds on deployment, and displays faults via the airbag warning light. After an accident, it stores crash data and locks itself.

The evaluation runs without pause, so that the reaction in an emergency is not delayed.

The control unit records detected faults in its memory, where they appear during diagnosis.

Why does the control unit 285583795R fail?

Causes of the 285583795R failing: crash data from an accident that remains in the memory is the most common cause of a failure, even if no airbag has deployed. Other possible causes are aged components, moisture and voltage spikes.

Crash data stays in the unit after an accident, and a normal diagnostic tool cannot erase it. The result is fault messages, even though the electronics themselves may be undamaged.

Aged electronics, cold solder joints and moisture at the plugs also play a role. Voltage spikes, for example from a weak battery or a jump start, stress the unit. Which cause applies only becomes clear on testing.

How can you tell that the 285583795R is defective?

Signs on the 285583795R: the airbag warning light on the instrument cluster lights up permanently or intermittently and thereby indicates a defect. A fault message may also appear on the instrument cluster, or the diagnostic tool may fail to connect. In an emergency, airbags and seatbelt pretensioners might then not deploy.

The warning light is the system's direct feedback and calls for a prompt inspection. Do not leave the vehicle unchecked for long.

A memory whose entries cannot be erased also indicates a fault that should not be ignored.

Which vehicles is the 285583795R fitted in?

The 285583795R is fitted in these vehicles: Renault Mégane III (2008-2016). The list below shows the allocation.

This overview lists the vehicles:

• Renault Mégane III (2008-2016)

Comparing the part number on the label of the control unit with the number on this page confirms that it is the right unit. Whether the control unit itself is defective, or a plug or cable is the cause, is shown only by the fault memory read-out.

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

How does the repair of the 285583795R work?

Repair sequence for the 285583795R: first read out the fault memory and attach the log, then disconnect the battery and remove the control unit. Create the repair order online and send in the carefully packed unit; processing at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on a test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, the unit is returned to you.

Please pay attention to the order of the first steps, as it serves 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 285583795R get to Airbag24?

Shipping the 285583795R: you either send the control unit in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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