2005 Hyundai XG350. Installed a new radio/DVD/GPS receiver, but start to fail, so I re-installed the old one. The seller asked me to send him a video of the failures, so I disconnected the old one and installed the new one again. At this time the new one never came On, but the problem appears to be the car electrical system, because I tried back the old one and also stop working. The symptoms are: the needles of the fuel and temperature gauges eon't return back to zero, the light of the door won't come On when open doors, can't lock doors with remote control, as soon the key is in ignition and made one turn, the AC comes On. I think that the electric system has a failure due to the new device, because the wiring connections were OK (I have them in the video and I reviewed it already.)
I disconnected the negative battery but no reset of system happened. What is the problem? What to do? Can I fix it myself or needs of a special machine in a shop?
Monday, June 6th, 2011 AT 4:09 PM