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1995 Mercede-Benz S500
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1,172 Posts
Discussion Starter #1
Hello everyone i was wondering if anyone can help me out. My dad have an 88' 420SEL. The problem is that whenever he turns on his A/C or heater it seems to only blow on hi. So basically he cant put the A/C or heater on low or medium so anyone have a clue? He was thinking there might be a some sort of resister but i am not sure myself. Any ideas?
 

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1995 E320 (totalled) 91 420SEL W126 (retired) 2002 S500 W220(retired); 2008 C300 Sport W204
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662 Posts
Sounds like there may be some cracked solder joints in the climate control unit (the panel with the temperature wheel). I would check it out. I had a similar problem and that is what it was.
 

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1995 Mercede-Benz S500
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1,172 Posts
Discussion Starter #4 (Edited)
As for the climate control he only wheel we have is the temperature wheel and it have the 5 push buttons with the extra 3 buttons to the right. You think maybe its the climate control that has gone out?
 

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2012 CL550 4MATIC Coupe
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9,985 Posts
How did you get 320 posts without the Mods jumping on you to fill out your profile?
 

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2013 MINI Copper S Clubman, '84 300CD-weekend car
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10,152 Posts
Sounds like there may be some cracked solder joints in the climate control unit (the panel with the temperature wheel). I would check it out. I had a similar problem and that is what it was.
Agreed, but, sometimes if the fan blows only high, it's low on brushes.
 

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1995 Mercede-Benz S500
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1,172 Posts
Discussion Starter #7
^^^ Hmmm i see what you are saying because when i had a 89' w124 i remembered that my ac oly have a hi speed or the 4th button to the right to making it a low speed. I wonder he just tested the ac compressor to a relay plug in unit near the windshield... does the w126 have and ac relay?



How did you get 320 posts without the Mods jumping on you to fill out your profile?
IS that bad or good?
 
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