Sedeta Side Mirror Switch Knob with Heat Control Black for VW Golf Passat B5 GTI Beetle Jetta MK4 Size:4.5cm x 3.6cm x 4.5cm. Direct Fit, Easy Installation. SIDE MIRROR SWITCH (Heating Control) fOR VOLKSWAGEN. Mirror Adjustment, Heating Control. Fitment:98-04 Golf, 98-04 Passat B5, 99-03 GTI/R32 I,98-06 Beetle, Jetta MK4.