WONT GO INTO GEAR AFTER SERVICE
Is it a ZF 6WG310 transmission? Switch VTS gear switch? This one needs to be unlocked with top button. Does display show any fault codes? Check wiring from gear switch to TCU.
it is that trans will check wiring I will be going to the job site next week to get more info. before it got filter/fluid change, it had reverse gears but no forward now it has no gears on the display its toggling on which forward gear to select also the hydo lines do jump like they have pressure
With no or bad signal from output speed sensor at backside of t/m the system would toggle from 6th gear to 2nd. Check sensor, connector cables.