There's a couple of possible causes for why your display would start to dim:
High resistance in a wire or connector
The circuit board that the display is mounted to is bad
The display is bad, or loose on the circuit board
I've also seen cases where one/more resistors on the circuit board have gone bad, and they can be replaced if you're any good with a soldering gun.
As for your other electrical issues, always check the fuses first. And just because the fuse appears to be good, doesn't mean that it is. Check it with a DVOM.
With the seat controls, if your fuse checks out, then begin testing the circuit for that function starting at the switch. If the switch/wires/connectors check out, then move on to the seats motor and mechanism.
As for the lighter, if that fuse checks out, check to see if there's power at the lighter. (Probe with
DVOM on the inside of the socket) If there's voltage, then the pop-out lighter is bad. If there's no voltage, then one/more of the wires or connectors are bad.
Finally, if your car is louder than normal, then you need to check out the exhaust system. (Visual inspection) This could be caused by a leaking/cracked exhaust manifold, catalytic converter, pipe or muffler.
Wednesday, March 24th, 2010 AT 7:46 AM