Yeah I have an 03 Rincon as well and engine brake kinda sucks. I have an 88 forutraxx 300 and was used to the engine brake when I back it out of my truck but when I back my Rincon out it was very unexpected for it to not have any engine braking. Kinda scary sometimes if you're not expecting it. If you're downshifting it will slow you down a bit though, but reverse engine brake there is none. I have not tried it with the engine idle set high though. I've read for the new 680 fuel injected 2006 and up Rincons they have improved on it and many other minor things from the previous model. Other than that its an amazing 4wheeler.
As for your no shifting in auto mode, with no tire speed sensor reading then your transmission doesn't no when to shift and it should jusdt go into default mode which I think is 2nd gear. A service manual is extremely helpful so I definetly recommend to either buy one or download it. Hope you find what you're looking for.
As for your no shifting in auto mode, with no tire speed sensor reading then your transmission doesn't no when to shift and it should jusdt go into default mode which I think is 2nd gear. A service manual is extremely helpful so I definetly recommend to either buy one or download it. Hope you find what you're looking for.