i have a 2005 c230k...when i put the key in the ignition, car turns on fine but my console freezes, meaning my windows wont roll down, AC wont work, neither will speedometer gas gauge or signal lights...now if i put my key fob the opposite way it wont turn, it jams staying stuck..so can it be my EIS? i do have a pretty worn out key...cant it be maybe a fuse?? i replaced my car battery thinking it maybe the problem, i had to change i it anyways... but that wasnt it..does anyone know if it is my EIS, how much is it to repair on a 05 c230k?