I took my 2004 S4 convertible to the dealer to have the wipers repaired. Stopped working. They came back acting very strangely -- not stopping automatically, not going all the way down, stopping in the middle, and the newest event, vibrating when they stop about 2/3rds down. When I took it back, they told me that it was the comfort and convenience module as they thought it had gotten wet due to a leak in the top. I have cured the leak in the top and now have to resolve the wipers and air bag. I checked all fuses and other obvious things. all help appreciated. Thanks in advance.

Update: Turns out the CCM was slightly bad. Was throwing codes. Also, the wiper transmission was jammed. Looks like it will be fixed today. BTW -- I have a good garage in the old town alexandria area if anyone is interested. email offline.