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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 11-27-2012, 07:56 PM
ourcookie ourcookie is offline
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Location: Los Angeles
Join Date: Nov 2012
Posts: 8
Mein Auto: 1997 540i
a/c climate control is abnormal

Hi, I suspected my ac system in my 1997 540i doesn't work properly. When I turn on a/c, it doesn't matter what temp I set, ranging from 60F to 90F, there is no different in the air temperature coming out from the vent - it is always cold. the only way I can lessen the air temperature is by turning the round wheel on the air vent from say, 3 blue dots to 1 red dot, then I can feel the cold air lessen. Does this sound normal to you guys? Normally, shouldn't changing the temperature's degree would alter the air temperature?

Any comments would be helpful. Thanks
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