8 Speed ESM
WARNING: This page is about a different car, the 2017 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Shift Module (ESM) is part of the shifter assembly called the E-Shifter. The E-Shifter is an electronic Shift-by-Wire device that is mounted to the vehicle center console. It uses CAN messages to communicate driver requests for transmission gear changes without a mechanical connection. The E-Shifter also provides means for displaying the current/pending transmission gear state via the illuminated PRNDM pattern on the shift knob.