| FAQ #222 | |
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Colour code the parking sensors on a C6 |
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Detection is performed by means of a highly sensitive membrane The sensitivity of the membrane may be affected if coated with an unsuitable product . Detection is then incorrect or non existent . General Vehicles with non painted proximity sensors Non painted proximity sensors must never be covered with paint Remove or cover the proximity sensors when repairing the paint on the bumper Vehicles with pre-painted proximity sensors To ensure that obstacle detection is not incorrect or non existent , special "to be painted" proximity sensors must only be covered with a coat of paint with a maximum thickness of 120 microns . A paint thickness greater than 120 microns will lead to operating problems : .. No detection .. Incorrect information given to the driver Painting of the parts New panels New bumpers and "to be painted" proximity sensors are prepared in order to be coated directly with finishing paint . New proximity sensors are supplied with a 25 micron thick coat of primer . Painting a new "to be painted" type of proximity sensor Paint bumpers and proximity sensors separately Degrease the surface using a cloth soaked in "pre-painting degreaser" Wipe with a dry cloth . CAUTION : Never use an aggressive thinner which may remove the primer Single coat painting H.S. paint (high solid) : apply one coat of paint M.S. paint (medium solid) : apply 2 coats of paint Two-coat paints Base colour Apply 1 - 3 coats of paint depending on colour covering power Superlustre finish Apply one coat of high solid (HS) varnish Apply 2 light coats for standard varnish Avoid overloading and runs when apply finishing products Touching up paint on bumpers CAUTION : Never apply another coat of paint to a sensor which already has one coat of finishing paint . remove or mask the proximity sensors before applying paint . Faults causing proximity sensor operating problems Paint run or paint too thick on the membrane Paint run in the channel around the membrane Membrane distorted Bumper distorted altering the direction of the proximity sensor Dealing with painting faults on a painted proximity sensor URGENT : The thickness of the paint film should not be increased on the membrane Sanding can only be used to repair paint by greatly reducing the thickness of the existing paint Never sand the paint down to the membrane Apply a thin coat of finishing paint |
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| Info | Created: 19 March 2010 Last Updated: 19 March 2010 |
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