What about error T,boot ? i already replaced the Traction controller, but this error still occur and unit can't operated. Steering worked, hydraulic and traction did not worked.

Ricardo. L boot means Lift boot and in 99% off the cases this means your llc controler is damaged and you need to replace it. all functions except hydrolics will work.
sometimes it will show when a joystick is damaged but mostly not
Tinus