Somewhere there has to be something that tells the computer whether or not there is a trunk lid or a lift gate in the back of the car. Is it in the programming or do the sedans and wagons use separate CCM's or CCM software? The CCM in my 2002 Wagon is Part number 1C0 959 799 C /01H
SW025/HW026/B 364
I believe that SW025 is the software version.
It also has this at the very bottom and I assume it is a date: 30.07.03

 

By CCM are you reffering to the ECU? If so, they would have different programming than a sedan.