Airbag control unit with part number 285559462R

What does the airbag control unit 285559462R do?

The airbag control unit 285559462R controls the SRS restraint system of Renault. It collects the signals from the crash sensors, selects in an impact the airbags and seatbelt pretensioners that are to trigger, and keeps the system constantly under control. If it detects a fault, it reports it via the airbag warning light.

In an accident the unit stores crash data and locks itself. The evaluation takes place without outside intervention, and the results are not directly visible.

Precisely because the control unit works so hidden, it is worth taking a look at the warning light.

Why does the control unit 285559462R fail?

The most common cause is crash data that remain in memory after an accident, even if no airbags were triggered; a usual diagnostic tool does not erase them. In addition there are aged electronics, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

• Aging of the electronic components
• Cold solder joints on the circuit boards
• Moisture and corrosion on plug connections
• Voltage spikes, for example with a weak battery or when connecting a jump start

How can you tell that the 285559462R is defective?

Typical signs are a lit airbag warning light, an error message, or a missing connection to the diagnostic tool. Then airbags and seatbelt pretensioners may possibly not trigger in an emergency.

• Airbag warning light in the instrument cluster lights up permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

A finding of this kind is a clear reason for a check.

Which vehicles is the 285559462R fitted in?

The control unit 285559462R is fitted in these vehicles: Renault Arkana I (from 2019).

The vehicles in detail:

• Renault Arkana I (from 2019)

Compare the part number on the label of the removed unit with this page; that only establishes that it is the right unit. Also have the fault memory read out before removal, because only the log shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285015832, 285A40674R, 285A49105R, 5D3EEF4828, 985103085R.

How does the repair of the 285559462R work?

For the 285559462R, you first read out the fault memory, disconnect the battery and only then remove the unit; online you create the repair order and send the unit in well packed. Airbag24 checks it on the test bench, replaces defective components, erases crash data and tests the function, after which your own unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days. This period applies only to the work there.

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 285559462R get to Airbag24?

You can send the 285559462R to Airbag24 as a parcel or have it collected by UPS for an extra charge. After the repair you receive it back by UPS.

The parcel contains the printed repair order and is packed shock-resistant.