Which fuse controls the heater in 2000 S500?

In the 2000 Mercedes-Benz S500, the fuse that controls the heater is typically located in the fuse box under the dashboard on the driver's side. Specifically, you should check the fuse labeled for the heating system or climate control, often found in the owner's manual for exact identification. If you're experiencing issues, it's a good idea to inspect this fuse for any signs of damage or failure.