Dodge Charger 392 SRT Hellcat 2017 Owner's Manual page 287

NOTE: The only time the shift light comes on, is when the
shifter is placed into the manual gate. It will not work with
paddle shifters.
Shift Light RPM Set-Up
UNDERSTANDING YOUR INSTRUMENT PANEL 285
The Shift Light RPM Set-Up allows you to set the shift light
to actuate for gears 1, 2, 3, 4, and 5-8. By pressing and
releasing the up/down arrow buttons on the touchscreen
above and below each listed gear, the RPM values will
change in increments of 250 RPM. Pressing and holding the
arrows will change the RPM values in increments of 500
RPM, ranging from 2000–6000 RPM (6.2L) and 2000–6250
RPM (6.4L). The Shift Light setup screen may only be
accessed if the feature is enabled. Press the "Reset to
factory default" button on the touchscreen to change back
to factory settings, or press the "Shift Light Off" button on
the touchscreen to turn the system off completely.
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