Weird Front Wiper Problem

[trickynicky]

When in "Summer Mode" my front wipers have a hesitation when they are fully extended. This ONLY happens when you shut the wipers off and they are on the last cycle before they stop. You can turn the wipers on full speed and they work perfectly with no hesitation, but as soon as you switch them off the wiper basically pauses in the fully extended position for a brief moment and a slight binding noise can be heard. Also, to make this even weirder, when switched into "Winter Mode" this problem goes away and the wipers work normally. Because of this it seems unlikely that this is a mechanical problem, and leads me to think the wiper control module has gone bad. However, because the module is $130 I would greatly appreciate anyones input, as going and buying the part and then still having the problem won't make me happy.

Since my description of the problem might not be perfectly clear, I have included a movie of the wiper problem that can be seen here. (It's a 10MB file, so 56k people be patient )