I have issues with my '99 E320's a/c and after reading Steve Brotherton's very good article I retrieved the error codes:

B1231-ECT sensor
B1234-Sun sensor
B1459-Series interface connection to instrument cluster

I have just had the transmission changed and a major service done and the a/c stopped after that. May just be fluke but i'm not sure. I have heard that I may be able to just reset the error codes and all may be well and was wondering how to do this?
I have made a search on this board but can only find reset info for the older style of control panel.
Thanks for any help.