How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Marty Your Own Question

Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 49237
Experience:  Bosch Certified Master Tech. Over 35 years experience.
Type Your Mercedes Question Here...
Marty is online now
A new question is answered every 9 seconds

230 kompressor: climate control..it blows 40 degree cold air..wheels

Resolved Question:

1999 c-230 kompressor when climate control is set for heat it blows 40 degree cold air rather than 130 hot air, blower works fine, when the control wheels are moved to the max for heat then it makes real hot air any other position it seems to be on AC, also noticed at the same time the car seems to run around 210 c degrees rather than 175 any ideas?
Submitted: 2 years ago.
Category: Mercedes
Expert:  Marty replied 2 years ago.

eurotec :

Hi, it sounds like you may have a fault with one of the temperature sensors in the climate control system is unable to regulate the temperature. When you dial the temperature to maximum it overrides the sensors. I would suggest that you have the car connected to the Mercedes Star Diagnosis tester to read out the fault memory of the system and to check the actual values of the sensor. Most likely you will find a sensor giving an illogical reading.

Customer:

will a regular obd scanner find the code and what's up with the marked rise in engine temp related?

eurotec :

No, you will need a factory level tool that can read faults and actual values in the climate control system. Is the temperature running hot all of the time or only at idle?

Customer:

all the time but it started at the same time as the loss of heat

eurotec :

I'd first check the coolant level and then replace the engine thermostat.

Customer:

okay, level already check and full, heater worked fine this am and temp was normal, seems more than a coincidence that both started at once; where do I have to go to find that level/type of tester

eurotec :

Any Mercedes specialist will have a factory level scan tool.

eurotec :

Either the dealer or an independent who specializes in Mercedes repairs.

Customer:

thanks, XXXXX XXXXX u would say that have done all my own work since my 59 190sl but the newer cars control systems are a bit beyond me now [back to my 67 AH 3000]

Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 49237
Experience: Bosch Certified Master Tech. Over 35 years experience.
Marty and 4 other Mercedes Specialists are ready to help you

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 P Elm City, NC
< Last | Next >
  • 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 P Elm 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. Phil Marysville, 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. Charles Walnut 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!
    Sue Charleston, 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. Jim Castleberry, 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
 
 
 

Meet The Experts:

 
 
 
  • MB Paul

    Mercedes Technician

    Satisfied Customers:

    3450
    Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
< Last | Next >
  • http://ww2.justanswer.com/uploads/MB/MBpaul/2013-8-21_204936_paul.64x64.jpg MB Paul's Avatar

    MB Paul

    Mercedes Technician

    Satisfied Customers:

    3450
    Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    Mercedes Technician

    Satisfied Customers:

    22931
    Bosch Certified Master Tech. Over 35 years experience.
  • http://ww2.justanswer.com/uploads/RA/Racer76916/2012-5-8_6855_justanswerprofile.64x64.jpg Michael Warfield's Avatar

    Michael Warfield

    Factory Mercedes-Benz Technician

    Satisfied Customers:

    2807
    Mercedes-Benz Master Certified technician
  • http://ww2.justanswer.com/uploads/PE/peterpete190/2012-2-24_1274_20120215135406.64x64.jpg Pete's Avatar

    Pete

    Mercedes Mechanic

    Satisfied Customers:

    2556
    Over 15 years experience as a Mercedes dealer technician
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    Mercedes Technician

    Satisfied Customers:

    642
    MB Tech. since 1997. ASE Master. MB Factory Technician. MB Antique Specialist.
  • http://ww2.justanswer.com/uploads/promerc/2009-01-04_220431_ja_pic.jpg promerc's Avatar

    promerc

    mercedes diagnostic technician

    Satisfied Customers:

    487
    Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech
  • http://ww2.justanswer.com/uploads/73bbchevy/2009-12-8_232724_Picture_006.jpg Lou P. master tech's Avatar

    Lou P. master tech

    Mercedes Technician

    Satisfied Customers:

    418
    10 years master certified 100% fix rate knows mercedes like the back of my hand!!!!!