Hi guys,I'm new here,but see so much help all around,so I decided to post mine findings .Recently (month ago) mine C230 Kompresor start acting very strange-after locking it 15 seconds later the alarm is on.Two days later everything seem's to be O.K. locking is O.K. -the alarm is off -well next day is muggy and rain and after 30minutes of driving same scenario -lock 15 sec. later alarm is on but only flashing lights and this was going on and on for month and only when rain and here comes the help,not even tech from dealer MB did not know what is going on(did not let him do code testing).It was the stupid hood sensor.I took it off one sunny day and measure resistance and when the hood is open the circuit is closed and when hood is closed the circuit is open ,but I sprayed with wather and couple of minutes later the suppose open circuit start jumping from open to somwhere to 2M so after replacing everything is O.K. I hope it will help to somebody