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#1
08-27-2008, 05:32 PM
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R230 Heat/AC problem
Hello my neighbor has a 2003 R230 SL and she wanted to see if I could help fix her AC/heat problem. All she said was that very hot air was blowing out the floor vents, so hot she had to bring it back home and drive her other car. I haven't personally sat down in it and looked it over but I will if she wants me to. Any ideas on what the problam could be with this very limited amount of info? My first thought was a broken heater valve was letting cold air into the heater core causing hot air. The car is out of warrenty and will be very expensive it fix if taken to the dealer. Thanks in advance.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg 
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#2
08-28-2008, 01:57 AM
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The heater valve on this car is called the heat exchanger shutoff motor. That could be faulty and so could the in-dash control unit. I believe this problem is quick and easy to diagnose with a Mercedes Star Diagnosis (SDS) computer and very difficult without. I suggest that your friend take her car to an independent shop that has SDS.
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#3
08-28-2008, 08:07 AM
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how do I get to that motor? Remove the inner glove box, how?
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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