Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Connect one-on-one with {0} who will answer your question

Related Mercedes Questions
Having issues with my 1986 560 sl not blowing hot air all
Having issues with my 1986 560 sl not blowing hot air all the time … read more
Matt
Matt
Engineer
Bachelor's Degree
771 satisfied customers
Heater headache, 1984 300D. Fan blower always works.
Heater headache, 1984 300D. Fan blower always works. Intermittently just cold/cool air coming out.Sometimes gets worse, but the intermittency doesn't relate to the engine temp, RPM, idle, road velocit… read more
Lou Palomino
Lou Palomino
associates in automotive technology
10,006 satisfied customers
I have an 82 Mercedes 380sl. I have replaced my mono valve
I have an 82 Mercedes 380sl. I have replaced my mono valve and my push button ac and heat unit but I'm still having heating issues. The thermostat was replaced too. The tube to the cabin temp sensor i… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Heats blowing out of defroster and side vents,while cold is
hello, heats blowing out of defroster and side vents,while cold is comingfrom center vents, compressor working ,replaced blower motor ,monovalve,vacuum tree under dash on 91 300e,ac still working inte… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
I have a 1988 560 SL. I could only get the a/c heater to
I have a 1988 560 SL. I could only get the a/c heater to blow high heat. I changed the mon valve and now the A/C blows cold but when I turn the thermostat to heat it just blows outside temp air. It fe… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
I have a 1980 420 SEL. The heater was working as as you have
Hi, I have a 1980 420 SEL. The heater was working as long as you have the climate control wheel at max. if you try to turn it down then it would start to blow cold air. I then would have to shut car o… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
I'm having issues with my 1989 Mercedes 420 SEL heater. Do
I'm having issues with my 1989 Mercedes 420 SEL heater. Do you have someone that is knowledgable?… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Marty, The heater on my 560SEL was blowing cold. I checked
Hello Marty, The heater on my 560SEL was blowing cold. I checked the monovalve and sure enough it was torn (see attached picture). I replaced it, but the heater still blows cold. Is there a correct po… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
420sel: I am having an on going heating problem in my 1988
I am having an on going heating problem in my 1988 420sel. I replaced the mono valve and I had heat for the day. The next day no heat, so I also replaced the aux water pump still no heat. The heater U… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
mercedes 560sl: 1987 mercedes 560sl, heat was intermittant,
1987 mercedes 560sl, heat was intermittant, only blowing warm on defrost. replaced monovalve. Now only blowing cold air. Found A/c compressor cycling even when dialed to heat. Now only blowing extreme… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes Benz 300DT: I have a 1985 123 Body style, 300 DT Mercedes
I have a 1985 123 Body style, 300 DT Mercedes Sedan that I am experiencing Heater problems with . With engine running and car setting the heater seems to work ok . Climate Control is on Econ button in… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
89 560sel: nothing but cold air from my heater now..somtimes..shutting
i have an 89 560sel. i get nothing but cold air from my heater now. I can stop the engine and open my door and somtimes hear a door shutting and then the heater works. some vacuum actuated door is not… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1991 300sel: climate adjustment..out luke warm air/ac works good
1991 300sel just 16 days ago hard/cold starting in the morning and if it sets for3-4 hrs it is the same. #2 The climate adjustment control when placed in hot only put out luke warm air/ac works good. … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
s500: mb..blowing cold air..blower still working blowing warm air.
2001 mb s500 a/c suddenly stopped blowing cold air. the red light on the on/off button came on when the a/c stopped. the blower still working blowing warm air. there was no signs prior to this the a/c… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Driven heater does not put..blows cold air..blows warm air..antifreeze
1989 mb300se , when the car is cold and driven heater does not put out any heat (blows cold air) until i stop ata light etc, then it blows warm air, as soon as i get up to speed it blows cold again. C… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes benze: my heat stop coming..fan blows..my heater core
I have a 1998 S500 Mercedes Benze and my heat stop coming out on one side,but the fan blows very strong,they checked to see that there was hot water going through the lines and they were ok.One person… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1980 450sl: the ampliper , hot water control valve &..bled..mb..vaccum
i have a 1980 450sl that the a-c is blowing cold air , the dial is on max heat. i have replace the ampliper , hot water control valve & bled the heater system per mb instructions. i have tested the va… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1985 300TD: interior heat..comes back..blower continues weather
My 1985 300TD is turning the interior heat off after it reaches about 40mph. If I slow back down, the heat comes back on. The blower continues weather or not the air is blowing hot or cold. What gives… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

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

57,140 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

771 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.

Tim Mohr

Tim Mohr

ASE MASTER TECH

283 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x