Morning Christine
Is the garage a BMW Specialist or the Garage that sold the car ? I don't know what tests they carried out leaving the battery disconnected is a BMW Dealer trick to clear codes
Talked to a friend who works for BMW in the US apparently they saw a number of these faults which requires a Gearbox Software reset or upgrade Dealers can do it using ISTA-P or a ZF Specialist is the next step. Here is what he sent me
240211.pdf
Dave
By
Greydog ·