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The AC blows cold air I when I start the car I have the car
The AC blows cold air I when I start the car I have the car running about five minutes Start blowing hot air the AC line when it's real cold I need a shot and the ac pressure goes up over 100 … read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
16,182 satisfied customers
Rear vents are blowing extremely hot air, even when system
Rear vents are blowing extremely hot air, even when system is set on AC … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
38,895 satisfied customers
I just received my 07 cls550 which I shipped from Hawaii to
I just received my 07 cls550 which I shipped from Hawaii to Seattle, when I picked it up it was not blowing any heat, the AC works fine, defrost front or rear dont blow hot air either, the seat warmer… read more
Chris Walker
Chris Walker
ASE
73 satisfied customers
My c280 1998 AC is blowing cold on left side and hot on
my c280 1998 AC is blowing cold on left side and hot on right side at same rime center is not blowing at all… read more
Billy
Billy
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Bachelor's degree
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OUT the heater on the side vents blow VERY hot air..only happens
when I am in the car WITH OUT the heater on the side vents blow VERY hot air. Even if you touch the vent it is burning hot. This only happens on side vents. The car become unbearably hot. Mind you the… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Ac and heat replaced and now my passenger vent blows out hot air
Had my fan for ac and heat replaced and now my passenger vent blows out hot air when in the ac mode. Have been told by the dealer that I might need a dvo valve. Could the fan been put in incorrectly t… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Now the passenger vent is blowing out hot air when in the ac mode.
My fan for the ac and heat was not working so i had the fan replaced. Now the passenger vent is blowing out hot air when in the ac mode. Now told by a dealer I might need to replace the dvd valve. Can… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
2003 S430: blows cold air..heater valve or the head unit..warm
I have a 2003 S430 and the heat comes from the front vents, but the defrost and the floor vents blows cold air. Do you think it is the heater valve or the head unit. Also the rear defrost does not get… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
MERCEDES 400se: mechanical..airflow..Only cool air..hot air blows
Hi, I bought a MERCEDES 420SE (1991 model) in good mechanical order, in AUSTRALIA -no rust . The only upsetting things are; 1. that the airflow does not go to the feet (regardles to the positions of p… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
air conditioning only blows out on the passenger side..vents..column
the air conditioning only blows out on the passenger side of the middle front pair of vents located on the center front column on 1999 mercdws 320. how to take off the front panel to see whats happeni… read more
Michael Warfield
Michael Warfield
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Vocational, Technical or Trade Scho
3,133 satisfied customers
320 Mercedes: blowing hot air..restart..2 different dealers and $1000
have a 1999 E-320 Mercedes--the A/C will be working great and then it will start blowing hot air for no reason. the only way to stop the hot air is to cut car off and restart the engine. have hadv car… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
1993 300E: blows cold air..switches..the center of the console
1993 300E - air conditioner blows cold air for 30 or 40 minutes then switches to blowing hot air from everywhere but the center of the console. Nobody seems to have an answer. John Fallows… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
AC..vents..My local MB mechanic replaced 4 actuators last month
We have a stunning1991 560SEL Problem: The AC and Heat vents do not appear to be delivering the right kind of air where it is needed. My local MB mechanic replaced 4 actuators last month--same problem… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 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
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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
30,558 satisfied customers
1999 mercedes: cooling fan..there is hot air blowing..vents..rear seat
1999 mercedies e 320 looking for the cooling fan control modual Where is it located and there is hot air blowing out of the outter vents and the rear seat vent the middle vents in the front blow cold … read more
Stan
Stan
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Bachelor's Degree
3,418 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
30,558 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

30,558 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,133 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

829 satisfied customers

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.

Chris(aka-Moose)

Chris(aka-Moose)

Mercedes Technician

339 satisfied customers

24 years of experience diagnosing & repairing

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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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