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      11-10-2012, 08:53 AM   #21
khurmit
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Drives: '14 M5 Competition & '06 116i
Join Date: Mar 2011
Location: Stoke Poges, Bucks

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UPDATE - BMW Master Technician has confirmed that there is no control valve on E9Xs with Automatic Dual Climate Control - temperature is controlled by flaps which pass the air over the Heat Exchanger (i.e. matrix) or AC Evaporator - basically a hot radiator and a cold radiator.