I have many electrical problems (04 Lariat Screw with the audiophile system) not sure if they are all related? All three symptoms mentioned below are affected by the headlight switch.

1- the drivers side heated seat is sometimes non responsive, the light will not be illuminated and the seat will be on. When this happens, only one light will turn off and on. (both lights will not illuminate). Passengers seat is unaffected.

2- the radio (This one drives me nuts) volume changes when i hit the brakes, it does not matter if the speed volume is set to 0 or the max! Am, Fm, Aux, and the CD all are affected here. Hit the brakes again and the volume reverts itself.

3- sometimes the automatic headlights do not come on at dark, they will work in the manual position and come on no problem

Now i noticed, when i manually turn the headlights on, about 75% of the time everyting works fine for about 1/2 hour or so and then the above symptoms reappear.


This all started last week after the truck was in for another problem. I had my mechainc look at. The problem I had him check out was, the 4x4 selector will put the truck in and out of 4 hi no problem, and only 4 low when it feels like it. It has no trouble going in and out 4 Hi, but will sometimes get stuck in 4 low and will not dissengage. I also had no lights or brakes for my trailer, that turned out to be a defective 7 pin trailer plug, which was changed. My mechanic said I have to take the truck to the dealer for the 4x4 issue.

I forgot to metion the 4x4 light only comes on when it feels like it, i am assuming the 4x4 engage and disengage problem when fixed, should also fix the dash light too!!!

Any ideas on the above mentioned 4 issues here?
Thanks