Airbag control unit with part number 985103868R

What does the airbag control unit 985103868R do?

The airbag control unit 985103868R is the central control unit of the restraint system (SRS) for Dacia. It evaluates the signals from the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners fire, and monitors the system continuously.

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

The continuous monitoring is meant to make faults visible before they matter in an emergency. The control unit therefore carries a large share of the responsibility for the entire restraint technology in the vehicle.

Why does the control unit 985103868R fail?

Most often the cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase this data. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 erases the stored crash data during the repair. No normal diagnostic tool is needed for this, because the entry is removed in the course of the repair.

The other causes show up in the electronics and their connections. A weak battery or a jump-start can cause voltage spikes that stress the unit.

How can you tell that the 985103868R is defective?

The airbag warning light in the instrument cluster lights up permanently or at times, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

If these signs occur, airbags and seatbelt pretensioners may not fire in an emergency. Therefore have the finding checked promptly.

The light reports the fault as soon as the system detects it. A diagnostic tool can read out the fault memory only if the connection to the control unit is established.

Which vehicles is the 985103868R fitted in?

The airbag control unit 985103868R is fitted in these vehicles: Dacia Duster I Facelift (2013-2018) and I (2010-2013).

The list below shows the vehicles assigned to this part number.

• Dacia Duster I Facelift (2013-2018)
• Dacia Duster I (2010-2013)

Comparing the part number on the label of the removed unit with this page only ensures 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, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 8200952847, 985105129R, 985106190R, A2C85841702.

How does the repair of the 985103868R work?

Read out the fault memory first and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. 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 985103868R get to Airbag24?

You send the unit in as a parcel, or you 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. Pack the unit shock-proof.