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AC compressor is on, light on the control is on, but hot
AC compressor is on, light on the control is on, but hot air … read more
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Trying to figure out how to reset ac compressor on a 2015 GL550 … read more
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I don't have even cool air, just hot. I took to my trusted
Hi, I don't have even cool air, just hot. I took to my trusted local mechanic. he evacuated system, then was recharging and system would only take a little over a pound of refrigerant. he said this is… read more
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I need help troubleshooting AC system 1986 mercedes 300e.
I need help troubleshooting AC system for a 1986 mercedes 300e. Recently replaced the compressor, dryer, and expansion valve. The system was able to hold a vacuum of 29 inches more or less for at leas… read more
Marty
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AC is intermittently blowing warm air. It seems to be no particular
AC is intermittently blowing warm air. It seems to be no particular pattern that I noticed except that everytime It gets really hot it doesn't seem to cool. I'm sure the problem is within one of the a… read more
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Marty, Thanks for your help with the alternator. Website
Marty, Thanks for your help with the alternator. Website prompted if I had another question so I consolidated the AC issue. See all below. I have a 1995 c220 (W202), R134a system (VIN#WDBHA22E2SF17527… read more
Marty
Marty
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E320: 2002 e320, when I bought it, the fan did not remain constant,
2002 e320, when I bought it, the fan did not remain constant, so I replaced the resister and corrected the fan/blower over the winter. I turned on the ac for the first time yesterday, and nothing but … read more
Marty
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C220: Good morning EurotecI have a Mercedes C220 1994 w202
Good morning Eurotec I have a Mercedes C220 1994 w202 . I've got my Aircon checked and all is good. no leaks, 8 C on the pump but I have warm air coming through the vents in the cabin. The mechanic sa… read more
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Mercedes-Benz C280: I have a 1999 C280. The AC will be turn
I have a 1999 C280. The AC will be turn on when the outside temp gauge read +80 and above. It works fine when temp reads +70 and below. What could be bad?… read more
Marty
Marty
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Associate Degree
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Mercedes: Sir,The automatic climate control..my 99..instrument cluster
Sir, The automatic climate control on my 99 S 320 seems to work as designed, but since this is my first Mercedes, I find it questionable why the A/C compressor seems to have a delay of operation for a… read more
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190D: MB..air system..cool air, the auxiliary fan once stops
I own 1988 MB 190D 2.5L.Problem with cool air system. No one seem to know the problem.The system works very ewll when the vehicle is running with the engine on for any period of time. Once the vehicle… read more
Marty
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83 Mercedes 300SD: it, including replacing the old Behr radiator..AC
I have a 83 Mercedes 300SD, which I've only had a short while. I had some initial maintenance work done on it, including replacing the old Behr radiator. I had the AC charged. (it had been converted t… read more
Marty
Marty
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Associate Degree
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1998 E320: ac..psi..I test the compressor, temp, and pressure switches
I have a 1998 E320 and the ac is working. The psi is 40 at and the outside temp is 60 degrees. How do I test the compressor, temp, and pressure switches? What is your remedy? The ac controls operate j… read more
Marty
Marty
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Associate Degree
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1999 mercedes c320: a/c will blow 40 to 60 degrees..cycle on hot air
I have a 1999 Mercedez e320. The a/c will blow 40 to 60 degrees for a while and then will cycle on hot air at 100 plus degrees. This cycle will occur on and off. I live in AZ and I notice the in the m… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
The side vents when the AC is on and cold air comes..whats
my 1995 e 320 conv. blows warm (hot) air out the side vents when the AC is on and cold air comes out the middle vents. whats up with this Please???… read more
Marty
Marty
Mercedes Technician
Associate Degree
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1987 400sel: 000 miles..degrees..air conditioner..cool air to hot air
I have a 1987 402SEL with only 80,000 miles on it. Just took a road trip a couple weeks ago with outside temperatures around 100 degrees. The air conditioner worked fine EXCEPT it would occassionally … read more
Marty
Marty
Mercedes Technician
Associate Degree
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wagon: mb..ac system..supposed to pick a temperature..ac was recharged
The AC on my 1984 MB 300TD wagon is acting weird. I have the 'climate control' version of AC system, where you are supposed to pick a temperature and leave it alone. The AC was recharged when I bought… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
cabin fan..When I put my fan speed on 3 or lower it will stop cooling.
I am having a sporadic A/C cooling issue. When my in cabin fan is on high I have no problems. When I put my fan speed on 3 or lower it will stop cooling. My high side pressure will increase up to 70 p… read more
Nelson Garcia
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Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

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Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

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Mercedes-Benz Master Certified technician

Matt

Matt

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Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

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Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

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Work and diagnose electronics on daily basis.

Tim Mohr

Tim Mohr

ASE MASTER TECH

283 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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