rear defroster very weak

[duboy]

I've noticed over the last 2 years (since we've owned her) that the rear defroster on our 03 4.6is has become very weak, to the point now where, during the time it is on, it will only defrost the upper drivers side quadrant about halfway. I tried to search but nothing was really applicable. Everything inside is otherwise functional, radio reception is fine, the defrost indicator light works and it shuts off after maybe 10 minutes? As far as the glass goes, nothing has been changed in the last 2 years, no work done on the hatch either. I inspected the lines and they look ok. Anyone have this issue with their rear defrost?

the only other thing i can think of is...same timeframe, our keyless entry reception range has been pretty terrible, sometimes standing right next to the X5 doesn't unlock until a few presses. Yes, a new key was purchased and programmed, same results. Don't know if it's related at all...thoughts?