How do you know if the seat motor or control module is bad in your Mercedes CLK?

To determine if the seat motor or control module is faulty in your Mercedes CLK, first check if the seat moves at all when using the controls. If there’s no response, inspect the fuse associated with the seat functions. If the fuse is intact, you can test the seat motor by applying direct power to it; if it operates, the control module may be the issue. Additionally, using a diagnostic tool can help identify any error codes related to the seat control module.