The red stuck pixel is back. I guess manual sensor cleaning will not get rid of it. Luckily, I got this camera at Amazon so I can order another and send this back when they get it back in stock or wait until the local BestBuy gets it in stock so it's easy to return if I get another one like this. I have a feeling it may be a common problem that people aren't seeing because of the subject matter or where the bad pixel(s) are located. It's been in a different place on the two cameras I have has.
Is it just in video or both video and pics?
I had to return two 5DIII's because of this problem. I had bright red pixel's at low ISO.
My 5DIII (third one) has no stuck pixels. I am really happy with it, but I find it disturbing that I had to go through several cameras to get a good one. I've had quality problems with 6 of the 7 Canon DSLR's that I've had/have :
40D Bad LCD
40D Bad lens mount
60D diopter wheel very loose and will not stay put. Also the rubber grip peels at the edges after about 1 year.
5DII bad electronic board, replaced on warranty
5DIII two bodies with red pixels on the sensors
My current 5DIII is pretty much perfect.