On-board computer 123 Operation and maintenance menu The Trailer menu window is available when a trailer is coupled up. The possible displays depend on your trailer's equipment. Observe the notes on equipment and their operation in the manufacturer's operating instructions for the trailer. If the axle load is displayed in the Trailer menu window, park the vehicle on a level sur- face and apply the parking brake. Trailer menu window Axles menu window X Using the u or t button, scroll to в operation and maintenance. : Ш Working gears/ У crawler gears ; Working speed, front PTO shaft = Front PTO shaft ?
Engine-driven power take-off A Transmission-driven power take-off B Differential locks X Use the r or s button to scroll to the Trailer menu window. X Press the 9 button. The display shows the first input window, e.g. Brake info . On-board computer and displays X Display the next input window with the u or t button. The following information/input windows may be displayed, depending on the equip- ment installed: X Using the u or t button, scroll to в operation and maintenance. X Use the r or s button to scroll to the Axles menu window. R Brake info displays the temperature and wear on the trailer brake Tyres menu window R Axle loads displays the overall axle load of the trailer.
X Using the u or t button, scroll to в operation and maintenance. R Tyres displays the tyre pressure of the trailer tyres X Use the r or s button to scroll to the R Reserve pressure displays the reser- voir pressure in the trailer compressed- air reservoir Tyres menu window. Further information can be found in the "Tyre pressure control system" section ( Y page 186). The maintenance system calculates mainte- nance due dates for the vehicle and its assemblies based on the vehicle's operating conditions. The event window automatically displays maintenance due dates 14 days in advance.
When the maintenance due date has been reached or exceeded, the on-board computer shows additional event windows ( Y page 134). If the maintenance work is carried out at a Mercedes-Benz Service Centre, the fact that Maintenance menu window Hydraulics menu window X Using the u or t button, scroll to в operation and maintenance. X Use the r or s button to scroll to the Hydraulics menu window. Refer to the "Menus and input windows in the on-board computer“ section ( Y page 234) for further information. Z