Thanks for you reply..

I just left Mercedes of Richmond, per the Service Manager, the car does not have provisions for a heated seat unless it came that way from the factory. He said the dealership cannot retrofit or add this option to a car, but he referred me to an shop that installs aftermarket "Stuff" on MB cars. He said at least one customer has had heated seats added by this shop without any known issues.

It is hard for me to believe that MB does not prewire the CLS500, for what the car costs it would seem heated seats would be standard or at least have provisions for a dealer installed heating element.

Many cars that cost half what I paid have standard heated seats.

I guess you get what you pay for......