Airbag control unit with part number 285583344R

What does the airbag control unit 285583344R do?

The airbag control unit 285583344R manages the SRS system for Renault, checks the crash sensors and decides in an accident within milliseconds on airbags and seatbelt pretensioners. It reports anomalies via the airbag warning light. After an accident, it stores crash data and locks itself.

The test routine runs continuously while the ignition is switched on.

The unit saves detected faults in its memory, so they can be traced later.

Why does the control unit 285583344R fail?

Causes of the 285583344R: stored crash data after an accident is the most common cause, even if no airbag has been triggered. Aged components, moisture at plug connectors and voltage spikes are also possible triggers.

A normal diagnostic tool cannot remove the crash data. The unit therefore reports faults even when the electronics themselves are fine.

Ageing electronics and cold solder joints can also lead to failures. Voltage spikes arise, for example, with a weak battery or when jump-starting. Which of these causes is actually present must be checked in each individual case.

How can you tell that the 285583344R is defective?

Signs on the 285583344R: the airbag warning light on the instrument cluster lights up permanently or intermittently. In addition, a fault message appears on the instrument cluster, the diagnostic tool has no connection to the control unit, and the fault memory cannot be cleared. In an emergency, this means airbags and seatbelt pretensioners may not deploy.

The warning light is the most important warning sign, because it displays a defect directly. It calls for a prompt inspection of the system.

A connection that cannot be established with the diagnostic tool, and a memory that cannot be emptied despite attempts to erase it, also point to a fault.

Which vehicles is the 285583344R fitted in?

The 285583344R is fitted in these vehicles: Renault Mégane III (2008-2016). The list below shows the allocation.

The following list names the vehicles in which this part number occurs.

• Renault Mégane III (2008-2016)

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

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

How does the repair of the 285583344R work?

Repair sequence for the 285583344R: you read out the fault memory, attach the log and disconnect the battery. Then remove the control unit and create a repair order online. Afterwards, pack the unit well and send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days, after which the unit is sent back.

The order of the steps is mandatory for safety reasons. 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 285583344R get to Airbag24?

Shipping the 285583344R: you send the unit in as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Include the printed repair order and pack the unit shock-proof.