2003 C 230 kompressor won't start help

1. The definite immediate cause is your battery. You should replace it. Jumping or recharging will only delay the inevitable.
2. That said, there is most likely something else going on which has ENDED with the SYMPTOM of a dying battery. It sounds like there's a short somewhere in the system... on my 2001 C240 I had the same problem repeatedly over a 2 month period, and it turned out to be the driver side seat controller. I don't know if it's the same for you, and I hope not. I replaced mine 3 times before they figured it out, and at $900 a pop it was a direct factor to me getting my C300.



