Mercedes-Benz S500 Problem Report

Mercedes-Benz S500 Buttons on temperature control assemblies work erratically due to wear of parts in control head

(9 reports)
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.
Horizontal lines in display screen. Several buttons do not work including EC. Am unable to run system without compressor engaged. -
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