My recently purchased W203 C320 (2000x reg) has what appears to be a common problem in that there is a loud clicking noise from behind the dashboard. It was originally just occurring after the engine was switched off but since the weather turned colder it is happening for a minute or so after...
As part of the door closing on the CLK the door closes, the main window rises and then the back window locks over. Or not in my case on either side. just the main window.
Is there a "hold button x down for 3 secs" option to reset this or is an other painful (if free) visit to the dealer?