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try checking the small bore rubber vacum pipe that comes out of the top of the dump valve,this pipe is interconnected to various sensors that connect to the vacum side of the esp system{and so the light comes on},basically its losing its vacum and that pipe is one of the weakpoints due to its locati...

hello there, what parts do the s2& rs2 share with the s4 2.2, brakes/hubs/gearbox/drivetrain etc, does anyone know as im just starting with a project, thanks mike