Airbag control unit with part number 985109629R

What does the airbag control unit 985109629R do?

The airbag control unit 985109629R belongs to the restraint system (SRS) of Dacia and is its switching centre. It evaluates the signals of the crash sensors, determines within milliseconds in an emergency which airbags and seatbelt pretensioners are triggered, and monitors the system during operation.

If a fault occurs, it indicates this via the airbag warning light. After an accident the unit stores crash data and locks itself.

Why does the control unit 985109629R fail?

Stored crash data from an accident are the most common cause, even if no airbag was triggered. Also possible are aged electronics, cold solder joints, moisture and corrosion on connectors, and voltage spikes, for example with a weak battery or a jump start.

A normal diagnostic tool does not remove the crash data. Airbag24 takes care of the deletion during the repair.

Aged components in particular are not always noticeable straight away, and cold solder joints can appear only under load. The check on the test bench is therefore important to narrow down the cause precisely.

How can you tell that the 985109629R is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, a fault message appears in the instrument cluster, the diagnostic tool does not find the control unit, and a fault memory cannot be cleared. As long as the defect persists, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The light indicates the defect. A warning light that stays on permanently is therefore a reason to have the system checked.

Which vehicles is the 985109629R fitted in?

The 985109629R is fitted in these vehicles: Dacia Dokker I (2012-2021).

The affected models for this part number follow here.

• Dacia Dokker I (2012-2021)

Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Whether the control unit is defective or a connector or cable is the cause is shown by the fault memory. Therefore have it read out before removal.

For the same vehicles, we also repair control units with the part numbers 985100336R, 985103219R, 985103258R, 985105129R, 985105409R, 985109184R.

How does the repair of the 985109629R work?

First have the fault memory read out and attach the log to the unit; then disconnect the battery and remove the control unit. Create the repair order online and send the well-packed unit in. At Airbag24, checking, repair and testing usually take 3–4 working days.

At the test bench Airbag24 checks the unit, replaces defective components, deletes the stored crash data and carries out a function test. Afterwards the 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 985109629R get to Airbag24?

You send the unit as a parcel to Airbag24 or book a UPS collection for an extra charge. After the repair Airbag24 sends it back by UPS.

Enclose the printed repair order and make sure the packaging is shockproof.