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AC working erratically will stop suddenly. blow warm air or
AC working erratically will stop suddenly. blow warm air or blow from vents that i have not engaged, … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,781 satisfied customers
I have a MB 2011 ML550. The vent fan will at time turn back
I have a MB 2011 ML550. The vent fan will at time turn back on after the car has been shut off, even if I make sure the vent system is shut off at the inside controls. I can hear the fan running in th… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,781 satisfied customers
Pearl, I have replaced a faded switch button on 560SL 87
Hi Pearl, I have replaced a faded switch button on 560SL 87 climate control (after removing all parts form dash) then returned all back in place. When I started the AC to test, it blows only heat (no … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
Clk 500: I have a 2004 clk 500 and had my dashboard replaced.
I have a 2004 clk 500 and had my dashboard replaced. However now, hot air is blowing from the foot vents, defrosting vents and small side vents of the dash. I don't even have the climate control on. A… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,781 satisfied customers
380SL: Vehicle: 1985 MB 380SL; Topic: Climate ControlI
Vehicle: 1985 MB 380SL; Topic: Climate Control I am restoring a 1985 380SL (type 107). Problem: climate control only blows ambient (room temp) air out of upper vents (only?) no matter which control bu… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
So I guess the used climate control is bad take it back
So I guess the used climate control is bad take it back an would that be the problem with AC going up defrost ve nt… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1996 s420: highway..ac..passenger side airbag..dashboard this way
I have a 1996 s420 and just recently rear ended someone on the highway with both airbags deploying. I never had a problem with either the heat nor the ac but ever since the car got fixed and started d… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
drivers side of my 1994..passenger side..Control Module
My heat isn't working on the driver's side of my 1994 S350D. The heat works fine on the passenger side. A shop that I'm not that impressed with replaced the Convenience Control Module. I'm concerned t… read more
Cory
Cory
LICENSED CHARTER CAPTAIN
High School or GED
261 satisfied customers
AC..cools..it switches to full heating, blowing out really hot air
My AC cools very well but at times (mostly from a gallop), it switches to full heating, blowing out really hot air. What component could be failling. Plse help.… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,132 satisfied customers
1984 Mercedes Benz: SL..blowing hot air..fues..me that the compressor
Hello, I own a nice 1984 Mercedes Benz, 380 SL, that the A/C is blowing hot air. The Compressor is not working, all fues are in good order. I had a reputable mechanic perform a check and he told me th… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
88 300te: replaced the climate control unit..unhooked..water pump
I have an 88 300te wagon. the heat stays on constantly. i have replaced the climate control unit, clamped the mono valve and unhooked the aux water pump. nothing seems to make it stop. as soon as you … read more
Hipo64
Hipo64
Mercedes Technician
High School or GED
444 satisfied customers
AC..the cabin temp reaches the thermostat setting the volume..vent
I have 2007 E 320 bluetech. When I take a long trip the AC does not work properly. When the cabin temp reaches the thermostat setting the volume of air coming out of the vent is minimal and that is ok… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
1983 300sd: ac compressor..blew..fuses to my climate control unit
I have a 1983 300sd. My ac compressor went out. Before I had it replaced it blew any number of fuses to my climate control unit. The unit now doesn't work although the fuse is ok. I'm thinking that th… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1993 300se: heater blows cold air from the middle vents and warm
sometimes the heater blows cold air from the middle vents and warm from the outer vents on my 1993 300se… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
seat..radiator cooling fan is turning very slow un less u jump..relay
1999 e 320 ac problem heat only from the outter vents only blow hot air and rear vents in middle of seat blow hot also the middle vents in the front blow cold also the radiator cooling fan is turning … read more
Nelson Garcia
Nelson Garcia
Vocational, Technical or Trade Scho
1,094 satisfied customers
94 S420: Benz..nice cold air in the summer..hot air..windshield
I have a 94 S420 Benz. When I use the A/C, it works fine and blows nice cold air in the summer. Now I'm trying to use the Heat for the winter but the hot air is blowing really soft and will only blow … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
The heater blow hot air when idling in park..faster..SE
Why does the heater blow hot air when idling in park, but turns to cold once you get going to about 30 mph and faster? 1985 380 SE… read more
Rob
Rob
Diagnostic Technician
High School or GED
196 satisfied customers
2001 C320: car, under the dashboard..climate control..solenoid..vent
I have a 2001 C320 I just purchased. When I turn it on or start it, there is a "ticking" sound on the right side of the car, under the dashboard. It sounds like it might be related to the climate cont… read more
tech4benz
tech4benz
Master Certified Mercedes Technician
Associate Degree
196 satisfied customers
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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

Engineer

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

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

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

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

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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