Hi All, I need advice about transmission problem on our motorhome. It is a Roler team T-Line 740, year 2019, built on Fiat Ducato Multijet 130 (2.3 diesel). The van is just over 70K km and recently run into a problem with the transmission. Currently it is stuck to neutral and will not engage any other gear. When I turn the ignition on the gear selector can go to 1 and R but, as soon as I start the motor, it goes straight to Neutral. Towed the motorhome to the local mechanic but they redirected me to Fiat authorized service. Reading multiple posts, I understand the problem can be as simple as a software reset and as big as tens of thousands of dollars gearbox replacement. How can I keep the service honest for what they are doing?