Chrysler 2012 300 SRT - Owner Manual - Manual (Page 192)

With the parking lights or headlights on, rotate the left
dimmer control upward or downward to increase or
decrease the brightness of the instrument panel lights
and cupholder rings (if equipped). Ambient Light Control
Rotate the right dimmer control upward or downward to
increase or decrease the brightness of the door handle
lights and ambient light located in the overhead console.
Instrument Panel Dimmer Door Handle/Ambient Light Dimmer
190 UNDERSTANDING THE FEATURES OF YOUR VEHICLE