what is causing my trans temp light to come on. on my 04 dodge ram 2500 5.7 hemi

What is your question?

it comes on after driving 5 miles. then the transmission starts jumping back and forth from o/d and fourth

What makes this problem better or worse?

turn it off and start up again

How long has your 2004 Dodge Ram 2500 had this problem?

since i got in jan.