1990 W124 300E gearbox mode selector

[Andy G]

My standard/economy switch has stopped working and the result is the box is permanantly in standard. Where do I begin the fault finding process?
Cheers in anticipation!
AndyG

 

[C220GJS]

Have a look here ; http://mbclub.co.uk/forums/showthread.php?t=6722&highlight=gear+selector .