Engine Warm Up Cycle
WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
Based on the detected engine coolant temperature (CAN), the shift points are raised during cold engine operation. This is implemented to speed up the warm up cycle of the catalytic converter.