Airbag control unit with part number 985109469R

What does the airbag control unit 985109469R do?

The airbag control unit 985109469R controls the restraint system (SRS) of Renault. It reads the signals from the crash sensors and decides in an emergency, within milliseconds, which airbags and seatbelt pretensioners are triggered. Faults in the system are reported via the airbag warning light.

The control unit monitors the system continuously and checks sensors, cables and activation elements for plausibility. This keeps the entire restraint system traceable during operation.

After an accident the unit stores crash data and locks itself.

Why does the control unit 985109469R fail?

Most often the cause is crash data stored after an accident, even if no airbag has deployed. Added to this are aged components, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data cannot be erased with an ordinary diagnostic tool. During the repair Airbag24 removes it by deleting the data.

The further causes at a glance:

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

Which of these applies in the individual case only becomes clear once the unit has been examined.

How can you tell that the 985109469R is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. In addition, a fault message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

The light displays the finding directly in the field of view, so it does not have to be overlooked.

As long as the fault exists, airbags and seatbelt pretensioners may not trigger in an emergency. It is therefore advisable to have the fault memory read out promptly.

Which vehicles is the 985109469R fitted in?

The control unit 985109469R is fitted in these vehicles: Renault Clio V (from 2019).

Here is the list of vehicles for which this unit is stored:

• Renault Clio V (from 2019)

Before sending it in, a second look is worthwhile. Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Having the fault memory read out beforehand, on the other hand, 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 985104563R, 985107887R, 985108115R, A3C00492401.

How does the repair of the 985109469R work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create a repair order online. Send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test.

Afterwards your own unit goes back to you. 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 985109469R get to Airbag24?

You send the unit 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 in the parcel. Pack the unit shock-proof so that it arrives safely.