SilverLS400

so heres the deal, when i turn the key to the on position the trac off light comes on then i press the button it turns off, then i press the button it turns on and so on. So now i start the car, the TRAC OFF light turns off and in a few seconds it comes back on. the warning light TRAC doesnt come on. I took it to a shop and they said its some electrcial problem the test said CODE 51. But code 51 is for the TRAC light not the TRAC OFF light. Anyone had this problem?
at first i thought the button was broken but it wasnt.