2014 Cadillac CTS Owner Manual - Page 186

6-6 Lighting If the high-beam headlamps are turned on, the fog lamps will also turn off. They will turn back on again when you change back to low-beam headlamps. Some localities have laws that require the headlamps to be on along with the fog lamps. Interior Lighting Instrument Panel Illumination Control The instrument panel brightness knob is on the instrument panel next to the steering column. Reading Lamps The reading lamps are on the overhead console. These lamps come on automatically when any door is opened. For manual operation, press the button next to each lamp to turn it on or off. If the reading lamps are left on, they automatically shut off 10 minutes after the ignition has been turned off. D (Instrument Panel Brightness): Turn the knob clockwise or counterclockwise to brighten or dim the lights. Turn the knob completely clockwise to turn on the interior lamps.