MAXRPM
Veteran Member
brought passat for TDI emission upgrade to VW stealership, after the upgrade was done car drove fine for about 25 miles fine then after firing car now the dash stays on with all electronics for 10 sec then everything is off, car runs fine but it's got nothing working on the dash, question does anybody know when stealership does the upgrade do they pull ECU out or they do it through the OBD2? maybe the ECU is not properly fasten, car never had any issue before,, now I got to deal with nincompoop techs at stealership, I never dealt with VW techs now I have to face them.