My a/c died this past weekend. I've read several threads as to how you can get codes in the older models using the a/c controls. In the 2005 C class it appears that that cannot be done. I don't want to throw parts at the car and I don't want to go to the dealer, I would like to troubleshoot this myself. The compressor wasn't making any weird noises before everything shut down. Can I get codes from the can bus using an OBDII/Can reader. I know that there is a possibility that it can be the pressure/temp sensor, the evaporator temp sensor, or it could just be low on freon. Does anyone know how to get the codes from a 2005 C Class in order to get codes to troubleshoot A/C and also can the OBDII/CAN readers be use to troubleshoot the A/C. Any help is appreciated, I'm really cooking down here in florida and the wife wants her car back.