I have a 1995 E320with 104 engine. The Economic & Sport mode selector switch is not working. Later I found out that the vacum lines and the control valve for this function (near the battery) is removed. Question : Why would anybody do this? And how hard is it to reconnect this valve and vacum lines? Does anybody have the schematic diagram on this?
I really appreciate any advice, because I'd really like to enjoy the 'S' ride on that car.