Mirror Switch Knob Jetta Mk4 Golf Mk4 Passat B5 (Left-Hand-Switch) Control the adjectment of side mirror glasses position in powered mirror assemble For the powered mirror assemble with heating function Red color illumination For Left-Hand-Side Driving region For VW Jetta Mk4 (1998-2004), Golf Mk4 (1998-2005), Passat B5 (1998-2000), Passat B5.5 (2001-2005)