Hi all I have a still R70-25T 2001 serial 517066301748
Truck has no drive apart from sometimes it will try to drive even when no direction selected.
if you select a direction with park brake on and depress accel pedal the direction arrow stays lit and it say park brake on display take park brake off and depress the direction light goes out but no movement.
engine runs fine hydraulics are fine ,
ive checked all the fuses and relays all seem fine , removed and cleaned speed sensor on bell housing seems fine with multi meter showing ohms was dirty so cleaned still no drive.

I cant see any errors on screen and don't know how to access the menu for them.
anyone any ideas on what maybe wrong and what I can try

Many thanks in advance