Poor Alfa Romeo service from Arnold Chatz

We own a 2019 Alfa Romeo Stelvio Quadrifoglio. The car's engin light came one, had stop-start malfunctioning occasionally and had the fans running sometimes. The Engin light was also intermediate.

We in total took the car 4 times (one of which was a full service) to Arnold Chatz to check the engin light and symptoms. They have reset the error warnings but after a week or so the problem the reappeared. On one occasion I was told its the battery so I replaced that too, but still the same.

After the 4th time taking it there and still having the same issue I decided to contact the Michanic, a mobile michanic coming to your house to check. They immediate told me the is an ECR failure, the electronic temperature sensor, or a P0118 error. This made sense to me when I read up as it has all of the above symptoms. They ordered the part, came to replace it and all issues stopped. Turns out the battery was fine too.

Very unprofessional considering they specialise in Alfa.