The wipers on my 156 (2004) stopped working last week. When I switched on the wipers they wouldn't work on the first or second second, but would work on the third setting at the second setting speed. This worked a few times and then stopped altogether. Took it to my mechanic, who admits himself he is not to well up on auto-electrics but he thinks its the motor. When he has the wipers switched on he says if he moves one of the wiper blades manually the wipers will go automatically for a short period and then stop. He says it seems to be that there is not enough power from the motor to drive the wiper-blades.
Any thoughts would be appreciated.