Transmission Control Module
WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The Transmission Control Module (TCM) changes the shift maps for the JaguarDrive Control (JDC) mode selected. This changes the shift points providing early or late upshifts and downshifts.