How big of a job is it to change the starter motor. Is there a definitive test to see if that is actually the trouble? When I turn the key nothing.....not even a sound, the battery is good although I had to re-charge it, headlights etc work fine and none of the fuses are blown. There was a smell of burnt wiring insulation when I tried to start so I quit trying right away, could this be the starter windings? When I was trying to start my wifey turned the key and I gently tapped the starter but nothing, akthough I noticed the pry bar sparking a bit when it grounded from the starter case onto the motor. This is one unbelievable car folks 600000km I want to keep it but not spend a fortune like I do with my 500SL when something goes wrong, although that too is a gorgous car.