As we said before, Autel and Xtool are safe for Renault 2015 up smart key card programming.
Working experience 1:
We have done a Renault Clio 4 2018 successfully today. Added a spare key with autel im508 and xp400.
always have battery maintainer under the charger
maintain the battery at 13v. It’s doing load maintenance I was at 13.47
I have done lost keys was ok as well.
Working experience 2:
Success! 2018 Renault Clio 4 add key with im508 by obd.
The newest (from 3.03.2022) update installed. Connected second car by cables to be sure will get above 13v by obd. MY MISTAKE at the begining, It failed to read dflash (I chose to open file that i didn have, should choose “read by obd”) Then it started to read Pflash (15min) then writing Pflash(15min), it calculated pin, made dealer key for blank, asked to remove new card and to put back original one and started to learn original card, then remove and put new card (as dealer key) and done. 2 cards fully working.