'99 S500 headlight wiper?
 

Recently one of my wipers does not return to the off setting. It stays all the way over to the opposite side. Is there some way to reset it to lay back down as it should? Everyonce in a while it will do ok but lately it has been left in the up position. It is on the passenger side, the drivers side does fine. I have tried to get some wd40 into the rod going in thru the light casing but it did not seem to help. Thanks in advance!!!