I bought a crash damaged Vito, I'm having trouble with the ignition. The key will lock and unlock the van but the key won't turn in the ignition. In the accident the earth wires were ripped fro the inner wing. I fix that, replaced a blown 20 amp fuse. I had the local merc main agent take a "quick" look but they seem foxed as well so I'm at a loss!! Has any one else had the same problem?? The main agent did try a new ignition module that didn't work and that was the last I saw of them!! Can any one help with any ideas???