ok, the central locking system is on the fritz again on my boss' 98 ML320. so he decides to pull all fuses one by one and check and replace. that didn't fix it, so he then tries to start it and it won't start. all fuses are correct. the tach moves so it's not the CPS, i can hear the fuel pump prime. it cranks, but doesn't turn over. i'm thinking he tripped the a theft device, but i don't know. any help is much appreciated!