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I have a 1998 Benz S420. Heater works air conditioner
I have a 1998 Benz S420. Heater works air conditioner doesn't. Put new thermostat in and the vent in middle above instruments got very hot with heater on and now it doesn't work. And air is shorted ou… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
21,705 satisfied customers
AC not blowing hard. When we select a seat to blow out the
AC not blowing hard. When we select a seat to blow out the vent or floor it does not blow really hard although it sounds like the blower motor is on high the air is just not getting to the vents at th… read more
sprinkles08
sprinkles08
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High School or GED
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sl 300: Hi Everyone, I have a 1991 300SL 140K miles with an
Hi Everyone, I have a 1991 300SL 140K miles with an intermittent air conditioning problem. Sometimes it works, often it doesn't - it seems to have a mind of it's own. At one point both fuses for the d… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes-Benz S420: Hi Also for some reason my a/c works only
Hi Also for some reason my a/c works only at the center but on the sides blows hot air instated of cool air What could it be the problem… read more
Marty
Marty
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Associate Degree
57,140 satisfied customers
The highway at high RPMs (70 - 80 mph) the vents..windshield
I have a problem with both of my 420 SEL's which just started when the warm weather set in a few days ago. While driving on the highway at high RPM's (70 - 80 mph) the vents in the front (predominantl… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes 190D: hot air being pumped..ripped..cluster
Hello tech 8753. I am back again with the existing problem of hot air being pumped through side vents on my mercedes 190D 2.5. I ripped open the central consol and dismantle thr control knob cluster. … read more
Marty
Marty
Mercedes Technician
Associate Degree
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2004 Mercedes: passenger side are not working..amp..sound system
I have a 2004 Mercedes E55 and my speakers on the passenger side are not working but when the car is jarred the speakers come on and then go off. Where would be a good place to check for a short or do… read more
Euro Specialist
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1991 350sd: there is HOT air coming out of somewhere..stick and mine
Hi, I have a 1991 350sd--the a/c works just fine but suddenly, there is HOT air coming out of somewhere in the driver foot area! Someone said there are louvers that stick and mine is open--any ideas o… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Slk320: 100 degrees Celsius normal temperature reading..check first
Is 95-100 degrees Celsius normal temperature reading for SLK(NNN) NNN-NNNN If it is not normal, what (and how) should I check first?… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
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lower hose..bolts for the side housing, is there a trick to pulling
1987 560 SL......I am trying to replace the thermostat.....I opened up the upper housing and there was nothing in it. Is the thermostat on the side of the water pump, in that housing where the lower h… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,132 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
57,140 satisfied customers
2003 E500: air condition..works fine..hot air..center console facing
2003 E500 @ 109,000miles; air condition front zone cold/hot temp works fine, issue is the rear; cannot open vents due to extreamly hot air, door vents as well as one on center console facing towards t… read more
MB Paul
MB Paul
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Vocational, Technical or Trade Scho
3,567 satisfied customers
1981 Mercedes: Diesel..Temperature gauge rises to above normal..guage
1981 Mercedes Diesel. Temperature gauge rises to above normal. When heater is turned on guage returns to normal. But only cool air comes out of vents and the radiator cap is cool to the touch. What co… read more
Pete
Pete
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General auto certifications
35,340 satisfied customers
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
57,140 satisfied customers
97 C230: work OK..outside temp..the car interior..climate control
My wife owns a 97 C230. This summer the A/C seems to work OK until afternoon when the outside temp approaches 80 degrees or so then the car interior starts getting uncomfortably warm. Had a mechanic c… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,340 satisfied customers
1998 Mercedes 300: Turbo-Diesel..10 minutes..itself and cold air comes
My 1998 Mercedes 300 E Turbo-Diesel has an strange air conditioning problem: it will be working perfectly on a hot day but when the engine is turned off and then turned back on, the a/c system blows h… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
The A/C blows cold out the passengers side vents..driver side
I have a 1997 E300D. The A/C blows cold out the passenger's side vents, but not the driver';s side vents. Even the center 2 vents, driver side is warm, pass is cold. Help?… read more
MB Paul
MB Paul
Mercedes Technician
Vocational, Technical or Trade Scho
3,567 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
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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

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

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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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