Still not ready
Thanks again for your advice, I sent it directly to my dealer in Bangkok. I live in Phuket, about 900 km from Bangkok.
The communication with the dealer (grey market) is not great.
What I understand, (translation from my Thai wife!) is that they put a new battery in the car, also registered the new battery. (What they did not do the first time, I presume).
Still the same problem. Now they ordered already 14 days ago an IVM from Germany.
Hope helps. I miss my car!