Your 2001 cabrio wont start it has a new battery why wont it start?

You need to determine whether your problem is a "no crank" problem, or a "no start" problem. To determine if it is a "no crank" problem, you will need to make two jumper wires. The first jumper wire should be about 6"-8" long, clips on either end, about 18g wire. disconnect smaller gage wire wire on the starter solenoid and jumper it with your jumper wire. Turn the ignition key on and then using another heavy gage (about 10 gage) wire, go directly from the positive terminal of the battery to the terminal on the starter where the battery wire connects. The engine should crank over. If it does not, replace the starter. If it does crank over, then you don't have a "no crank" problem, you have a "no start" problem, in which case this may be an issue with the alarm system. I goit lucky in that my problem was the starter, and not the alarm system. I performed the trouble shooting that I described above to determine that it was a bad starter. I replaced the starter, and all is well!