Hi , im owner of bmw e 81 2010 135i N55 Dct gearbox, last year in may car start to not see gearbox sometimes , after bringing in service they say need to change mechatronics, i found a company that sell me and reprogram the new one with soft from old one , also Dealer say pt can was on shortcircuit and thats why this happened , they connect new cables for can , now after one year and something i get car back and they cant do something more , i have Rheingold on my laptop and i gave some failures and dont know what to check more , if some have experience with that could someone help me , thanks.