I found this morning another Ista function.
I do not have the name ont op of my head, I could confirm tonight if necessary.
It was a reset after changing the EGR valve. It put my car on sleep mode for approximatly 5min.
This step did not help.
Did I broke the new EGR valve motor maybe?
Or was it very bad quality? (I hope not: I only ordered a part with the same OEM serial number)
My car EGR:
https://www.realoem.com/bmw/enUS/sho...diagId=11_5660
Two possibility: EGR-Valve (11718513132) or EGR-Valve Exch. (11719886715).
I don't know which one to choose, so I randomly selected the first one, and I ordered this part with the same OEM:
https://fr.ridex.eu/product/15226395
(Ordered on Auto-Doc).