Airbag control unit with part number 985100094R

What does the airbag control unit 985100094R do?

The airbag control unit 985100094R controls the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors, decides in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The control unit shows faults via the airbag warning light. After an accident it stores crash data and locks itself.

The unit combines sensors, wiring and triggering elements into one system that works reliably only as a whole.

Why does the control unit 985100094R fail?

The most common cause for 985100094R is crash data stored after an accident, even if no airbag has triggered. Other causes are aged components, cold solder joints, moisture and corrosion, and voltage spikes.

A normal diagnostic tool cannot delete this data. Airbag24 removes it as part of the repair.

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

These influences can also occur together.

How can you tell that the 985100094R is defective?

A defect on 985100094R shows up as the airbag warning light in the instrument cluster, a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster stays on constantly or appears only intermittently. It is the most visible indicator, accompanied by a fault message in the instrument cluster.

If the diagnostic tool gets no contact with the control unit or the fault memory cannot be emptied, the system is faulty. Airbags and seatbelt pretensioners may then possibly not trigger in an emergency, so have the check carried out promptly.

Which vehicles is the 985100094R fitted in?

The control unit 985100094R matches the stored models of Renault. It is fitted in these vehicles: Renault Arkana I (from 2019).

The known vehicles for this part number are shown in the following list.

• Renault Arkana I (from 2019)

Comparing the part number on the label with this page only ensures that the correct unit was removed. Have the fault memory read out beforehand, because only this log shows whether the control unit is defective or 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 985100094R work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit 985100094R; create the repair order online before sending the unit in.

The sequence serves safety during removal. Pack the unit afterwards so that it does not slip in the box.

Airbag24 examines the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. This processing at Airbag24 usually takes 3–4 working days.

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 985100094R get to Airbag24?

Two options exist for the journey to Airbag24: a parcel, or a UPS collection booked for an extra charge. After the repair, UPS returns the control unit 985100094R.

Enclose the printed repair order with the parcel; the unit is packed shock-resistant.