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Adaptive shifting programs

Adaptive shifting programs

Adaptive shifting programs are selected automatically depending on the engine load. The function is available in the normal and sport programs.

Shifts occur at higher engine speeds and the gear is engaged for longer if the control module senses that the load does not decrease. These shifting programs are used to avoid unnecessary up and downshifting, for example, when driving on long uphill stretches with a trailer as well as to prevent overheating of the transmission fluid.

Adaptive shifting programs are selected automatically if the transmission fluid becomes overheated, in order to prevent serious transmission damage as well as to decrease the transmission fluid temperature. Activation occurs when the temperature exceeds 150 °C. If the temperature exceeds 170°C for more than 10 seconds TRANSMISSION OVERHEATING is displayed on the SID.

The adaptive shifting programs are not activated at speeds above 150 km/h. If an adaptive shifting program is activated when the speed increases to above 150 km/h, the program is maintained until the control module senses that a more suitable shifting pattern can be activated.



Temperature program 1

If the temperature rises to 150°C, Lock-Up will be engaged in 2nd gear. Engaging Lock-Up prevents slip in the torque converter, which makes the temperature drop. The shifting points are altered as well, which means upshifts occur at higher engine speeds and downshifts at lower engine speeds in the normal program.

Temperature program 2

If the temperature rises to 157°C, the engine torque is reduced to 200 Nm.

Adaptive shifting programs are deactivated if:


• The winter program is selected.

• The ignition key is turned to the ON or OFF positions.

• The load decreases so much that an adaptive shifting pattern is no longer needed.

• CHECK GEARBOX lamp lights up.