Report: Buttons on temperature control assemblies work erratically due to wear of parts in control head
Mercedes-Benz S500 Problem
Average Mileage: 131,500 mi (93,000 mi - 170,000 mi)
Due to wear of mechanical parts in the control head, the buttons on temperature control assemblies work erratically or not at all. These control heads need to be replaced for this concern or when the display screen starts to fade out.
Visitor, 2001 Mercedes-Benz S500, 93,000 mi
Horizontal lines in display screen. Several buttons do not work including EC. Am unable to run system without compressor engaged.