Driving mode 185 the O symbol: briefly pull away and stop again. The gear change will be repeated automat- ically. When the crawler gears are disen- gaged, the status message without the O symbol is briefly displayed on the on- board computer display. The torque converter clutch is opened when changing gears. If you release the accelerator pedal slightly, you can determine when the torque converter lock-up clutch closes. Clos- ing the torque converter lock-up clutch as soon as possible has a positive effect on the oil temperature of the torque converter clutch and fuel consumption.
Waiting for a longer period before closing the torque converter lock-up clutch increases fuel consumption and the oil temperature of the torque con- verter clutch. Consider your driving style carefully. You can temporarily increase the towing power at engine speeds below 1700 rpm by using the kickdown function. X Vehicles with Telligent ® gearshift: slowly release the clutch pedal. Driving mode Driving mode Torque converter clutch General notes The torque converter clutch allows you to pull away smoothly and without causing wear, without using the clutch pedal, in particular with large trailer loads. The torque converter clutch is controlled by the transmission con- trol module.
Load your vehicle up to the per- missible gross weight in order to maximise tractive power. If the torque converter lock-up clutch is open, the X indicator lamp in the status area of the on-board computer lights up. When it is closed, the X indicator lamp goes out. G WARNING The parking brake may not be sufficient to secure the vehicle on uphill and downhill gra- dients. A loaded vehicle or a vehicle with trailer/semitrailer may roll away. There is a risk of an accident. In the control position, check whether the parking brake alone can hold the entire vehi- cle. The tractor unit and trailer/semitrailer should normally be secured using the parking brake and wheel chocks.
Driving mode i The vehicle can be stopped with any gear engaged. The oil temperature rises during torque con- verter operation. Depending on the load and gradient, you can pull away in 1st - 5th gear. Select the pulling- away gear according to the load. For loads exceeding 400 t, you must pull away in 1st gear. This will prevent the oil in the torque converter clutch heating up too much. Driving mode with power take-off The function of the transmission shift system is severely restricted with the speed governor switched on, even in power take-off mode. For this reason, switch off the speed governor before changing gears and driving in normal mode.
i If the vehicle is stationary and a gear between 6th and 8th is selected, the throt- tle does not respond. X Stop the vehicle. X Leave the engine running at idling speed. Depress the brake pedal during gear selec- tion. If you do not depress the brake pedal, a warning tone sounds. The Depress brake. message appears in the on-board computer display. X Engage power take-off. X Select a gear to pull away. Z