i have the same problem i have a C200 mercedes wont lock doors or turn in ignition and steering lock on, you can hear clicking sound when you key in, but doesnt turn to position 2, Mercs are telling me it could be anything, from instrument cluster which is £1500+, it could be key it self cost £200 +, or it could be that the computer on board lost its programming cost whooping £2000. but the car probably cost half the price so far quaoted :(( anyone help please
akhtar
June 2012