yeah its a 5 speed Auto and will not go out of 3rd, had a similar problem last year when it wouldnt go into 5th
disconected the battery and away to go
this time have done that and nothing has changed, no codes showing up on no matter what machine we plug in, very frustrating and dont know which way to turn.
can buy a 2nd hand box from 80 Breaker for about 1200 or a 1080 plus shipping from Nayab or about 3k to get mine over hauled although someone has mentioned a temp sensor, 1 does 1 to 3 the other does 4 and 5
gonna drop the oil and check it before go any further