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Message: <blockquote data-quote="astroboy" data-source="post: 553509" data-attributes="member: 4527">The fixed interval wipe is only available for E90 that doesn't come with rain sensor. Those that comes with rain sensor, this fixed interval wipe has been replaced by your so called "press on the stalk button (green led comes on), and its auto wipe, where the speed varies with amount of rainfalls and speed...."The dial on the stalk is supposed to set the sensitivity on the sensor but I find it utterly dumb.. :stupid:I use PG Polymer wash shampoo which kind of coat the windscreen with the thin layer of polymer which acts like RainX, so I seldom use wiper.</blockquote>