Security functions of the Transmission Control Module (TCM): Notes

When one or more components or sensors fail, the Transmission Control Module (TCM) -J217- activates the appropriate replacement functions or emergency programs. This ensures destruction-free operation of the automatic transmission with some effect on the function and quality of shifting.

When critical malfunctions occur with an active transmission control module -J217-, the currently selected gear will be held. "Mechanical emergency running mode with the control module active" is activated by the transmission control module -J217- as soon as the driving situation regarding transmission security and engine security permits it.