E-Class (W211) 2003-2009

E500 A/C Issue. Any ideas?

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Old Jul 17, 2016 | 12:35 PM
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MooflesThaCat's Avatar
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E500 A/C Issue. Any ideas?

Hey guys,

Long time no see. I previously had two w203s (at different times), but I recently bought an 06 e500. I noticed a weird issue during a long roadtrip i did yesterday. I drove 750 miles from Kentucky to New Jersey. During the beginning of my trip, the AC was working fine. About 500 miles in, I noticed that the AC was very weak. It was still cold, but there was barely any air coming out, even at the lowest settings. I did some searching and thought that it might be the blower and/or regulator or maybe even the duo valve, but this morning when I started the car, the AC was working perfectly.


Based on my searches, I think that it is the regulator but I figured id ask the experts of MBWORLD for their opinions.. Any ideas?
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Old Jul 17, 2016 | 12:40 PM
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1922 Ford Model T / no OBD
If you have climatronic with REST button, you can read the sensors for troubleshooting right on it.
If not, read them with SD.
Read parallel topic about climatronic options.
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Old Jul 17, 2016 | 01:37 PM
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No, my E500 doesn't have a REST button. By SD, do you mean Star Diagnostic?

I'll look up the topics on climatronics options, thanks!
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