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Adjusting window/headlight washers and wipers: According to unconfirmed posts at motor-talk.de (see the original posts here for accurate information, in case my translation is flawed,
http://www.motor-talk.de/forum/codierungen-hier-sammeln-t1963013.html?page=57 and
http://www.motor-talk.de/forum/codierungen-hier-sammeln-t1963013.html?page=56) in module Central Elect., adaptation channel 6 one can change the duration which the washers run, channel 25 the time of holding down the washer lever after which headlight washers activate and in channel 26 the amount of washer lever presses required to activate the headlight washers. According to these unconfirmed posts, to completely disable the headlight washers, change in module 09, coding, byte 20 from 04 to 00 and save. To disable the "one more wipe after some time" function in the window washer (
http://www.motor-talk.de/forum/codierungen-hier-sammeln-t1963013.html?page=55), in module 09, coding, wiper control sub-module (WWS), long coding wizard, change byte 1, bit 3. There is also talk of disabling the rear wiper, perhaps a coding checkbox already in Central Elect. module in VAG-COM/VCDS (see below). Some of these changes may not work in all model-years and are unconfirmed.