The past 2 days i have had to use my rear defogger it will only stay on for about 3 minutes and turn off then i turn it back on. Well today it was doing that and i kep turing it back on and i heard a pop almost like a fuse blowing my doorlocks did not work after that about 5 minutes later i tryed my doorlocks again they worked fine all my ACC's work fine I turned the defog back on just to see if that still would turnn on and it did.

Now a year ago i had a ground issue and during that time my DE-FOG switch was makeing a loud buzzing noise and you could feel the switch vibrate when this happend. Do you think the switch it self is the cause of my problems? The back window will begin to defog but i have to keep turning the switch on.