E39 windscreen wipers playing up
I need soem help please. I have a 98 540i
With the windscreen wiper stalk in the neutral position and ignition on if I spray liquid onto the windscreen sensor the wipers kick in to life, in fact doing what they shoudl be doing in position 1. Ignition switch has been changed and this cured some other problems but not this one. I have doen some battery powerdowns so everything has been properly reset. Has anyoen else had this? are we looking at a rely or something more sinister?
Any help much appreciated