I have a 2003 SLT+ and the driver's seat heat button is blinking, anyone know of why this could be broken, or easy fix's without taking it to the dealer??

 

Don't know about without taking to dealer, but I just had same thing happen on passenger side of 2001 Durango. Yesterday dealer told me it was heating element and quted me about $450. for part. Will supposedly take about 3 hrs labor as well. Definitely NOT a cheap fix.

 

Most seat heaters have a bottom cushion element, and one in the seat back. Find the connectors under the seat and do a continuity test in each element to find out which one has a open in the circuit. If you have never used a OHMS meter, all you do is connect each end of the meters + & - wires to the circuit wires of each element. The meter should show 1.0 or somewhere in that area. If it shows INF... or _ _ _ it has a open in the circuit.
If say the seat back element is bad, it will cause the other in the cushion to be inop, because they connect and complete the circuit.

Good luck.