I know the Motorola phone that came with my CLS55 is a bluetooth phone. However, I don't believe the car itself is capable of "linking" with a bluetooth phone. Did you add an after-market product?
The phone that is in my car is a siemens SP65 and has blurtooth but the command itself has it too I already connected my PDA and the siemens to the command system.
Bluetooth is not available in the US, but looks to be available in Europe. This was a point of contention when I bought my CLS. Why is it not available in the US?