I have had the orange light on for over a year indicating that my Dacia Logan MCV needs a service. The Dacia garage local to me wanted £80 to reset it but I wasn't paying that. I service the car myself. I tried buying the icarsoft FR device and it was useless. I also tried the Dacia Service Reset app on Android app store but it didn't work with my ODB II reader.

In the end I bought a different ODB II reader from China and it worked with the Dacia Service Reset app.

To help others in the same situation here is what I did:

1. Purchased this from China: https://www.aliexpress.com/item/4000828499243.html for ~£3.70 delivered - it look about 4 weeks to arrive.
2. When it arrived, I plugged it in to the slot found at the back of the glovebox.
3. Downloaded the Dacia Service Reset app on Android app store on my phone.
4. On my phone connetced to ODB II via bluetooth, using code 1234.
5. Opened the Dacia Service Reset app and selected ODB II and connect.
6. Watched an advert for 30secs then hit the reset button. The car console made a beep and the lights flashed. Service light gone

Hey man, hope you enjoy your Dacia

Be happy to own a MCV II, for series III Dacia models you won`t be able to do any of those, only on representative, factory codes for bypass gateway module.