When switching from bright lights to dim, my lights will totally turn off, sometimes if I switch back to bright then to dim again, they will work. Sometimes if I wait a second or two they will come on by themselves.
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The sensor is usually located on the top of your dashboard. You might see it if you look into your vehicle through your windshield at your dash.
I have seen( one time ) that a gps was bright enough that it caused the dash lights not to come on because the sensor thought it was light outside.
Or you could have gotten a bad sensor.
Does the radio play ? Are any other back lighting components not lighting ? Does the HVAC control panel light up ? You probably need new radio !
The second interior lighting group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination, LED illumination and incandescent lamps.
When the ignition switch is turned to the RUN position, the radio VF display turns ON at maximum brightness. When the park lamps are ON, all incandescent and LED back lighting turn ON at the dimming level indicated by the instrument panel (I/P) dimmer switch. At the same time all VF displays dim to match the indicated dimming level. The panel dimmer switch potentiometer is an input to the body control module (BCM). When the driver selects a dimming setting by moving the I/P dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the I/P dimmer switch is moved from MIN to MAX, all VF displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch.
Grab a $5 12volt test light & probe back of switch where wiring comes into switch, for wire that has power when you pull lights on. If that's when you want it illuminated. If you want it too go bright or dim with dash , poke wires until you find that one, while turning switch to bright dim, and test light will do same.
Yup... electrical problem,,,, I'd start by checking body ground (only thing common to problems you listed) then, check sub-system power supplies for loose or corroded connections. Sometimes just unplugging and plugging back in is enough to get better contact, so pay attention to what you do and if something specific helps, take it apart again & clean it up better!