Ever since I changed over to the griffin 2amp quick charge car charger and stock USB cord in my truck, I haven't had any issues. It does get hot, but I do live in Texas, and its pretty darn hot here. Going on over a week with over 100 degree temps. The car dock and phone have not done the blinking led over temp/ under power thing since I changed chargers. With the one amp capable charger I bought first, I would run Pandora, Google navigation, and after about forty five minutes the phone would be blazing hot and the led on both would blink at me. Eventually a notice would pop up stating the charger was not compatible. Now I run cooler with no issues. The car dock does sit in plain view of the sun ( line of sight to satellites) so it does get warm, but not blazing hot like it used to. On the plus side, it seems to charge quicker too.
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