I drive a 2004 CLK-320 coupe. There're times when I do not drive the car for 7 days, even 10 days.

Is there anything I should do for the car? Should I start the car and leave it idle once in a while?

i would suggest installing a battery trickle charger. it is pretty common to see the battery discharge after letting the car sit for even a few days. this is problamatic for a few reasons. one, these cars do not like being jump started. it plays havoc with the control modules and can cause nasty expensive problems. also, you will find undervoltage codes stored in your modules, which can trigger SRS lights and other false indicators that will require a trip to the dealership to verify that no real problem actually exists. the is no longer a MB trickle charger made, but talk to your service rep and see what they can do for you. MB used to pay for the installation of one to avoid all the costly warranty repairs on cars that are only driven a certain amount of mileage. also remeber that these cars were designed to be driven, and you are not doing any favors to the long term reliability of your vehicle by letting it sit. it is age more than mileage that creates service issues on a mercedes.

Thanks for your quick response.

The reason that I did not drive the car for the past few days because there was a snow storm (35-40 cm) here last week and the roads have not been cleared yet. My car with stock 16-inch all season tires does not drive well in snow at all.

After 7 days stationary in my garage, I started the car and it was surprisingly easy. I then drove the car back and forth a few times (a few feet), pumped the brake paddle a few times to get the fluid circulating and let it warmed up for 10-15 minutes.

Too bad, I may not drive my car for another few days because 10 cm of snow just came down today. I will probably repeat the whole thing after 4-5 days.

definately not a bad idea. hope the weather clears up soon.