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Related Mercedes Questions
I need help with the cooling fans on my '93 Mercedes 190e
I need help with the cooling fans on my '93 Mercedes 190e 2.3l manual. The auxiliary cooling fan nor engine cooling fan turn on like they should at 100 °C. I replaced both temperature sensors in the h… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
2002 ml320 aux fans cycle on and off for temperature but do
2002 ml320 aux fans cycle on and off for temperature but do not run continuously when air conditioner is on. … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,468 satisfied customers
My wife's 2007 clk350 started having problems with the
My wife's 2007 clk350 started having problems with the climate control at summer's end. I have to put the climate control to either 61 deg. or low to get the air to come on. Then it is full on and I h… read more
Lou Palomino
Lou Palomino
associates in automotive technology
10,014 satisfied customers
Marty, You told me a while back I could jump the resistor to
Hey Marty,You told me a while back I could jump the resistor to the Aux fan to have the fan kick in on high fan speed when the AC is switched on.I did this today on the 91 convertible, which has a sin… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Marty, I think my master cylinder is shot, just thought I
Marty,I think my master cylinder is shot, just thought I would check with you before getting a new one.The brake peddle feels softer and some times really soft. The fluid level is up in the normal ran… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Slk230: Model:2001 slk230Issue: Compressor will not engage
Model:2001 slk230 Issue: Compressor will not engage unless the outside temp is above 77ish Steps taken: 1) changed the evap temperature sensor. When the compressor engages (over 77 degrees) the ac wor… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
300E: 1993 Merceeds 300E--320 engine. Auxiliary fans for cooling
1993 Merceeds 300E--320 engine. Auxiliary fans for cooling radiator do not come on when AC compressor is on (Both fans remain off). Both fans DO come on when the engine temperature gets hot and then c… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes-Benz 300SL: I replaced the aux. cooling fan relay
I replaced the aux. cooling fan relay , N.G. cooling fans still run when ign. sw .turned on. I notice the climate control temp. indicator fluctuates.Also when you set control to either heat/cool it au… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes-Benz 560sl: I have a 1987 560sl. The A/C is fully
I have a 1987 560sl. The A/C is fully charged (checked with manifold gages). The compressor clutch takes a long time to engage. When it does engage, it gets nice and cold. I always attributed the dela… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
190D: MB..air system..cool air, the auxiliary fan once stops
I own 1988 MB 190D 2.5L.Problem with cool air system. No one seem to know the problem.The system works very ewll when the vehicle is running with the engine on for any period of time. Once the vehicle… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Fan works when given power. Replaced temp sensor, still not working.
1986 560SL Aux fan does not turn on automatically. Fan works when given power. Replaced temp sensor, still not working.… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Recently installed a rebuilt compressor, new expansion valve and drier
A/C problem. Recently installed a rebuilt compressor, new expansion valve and drier. The air worked fine for about a week. Now the compressor/clutch will not engage when the cabin switch is activated.… read more
mbfixer
mbfixer
Shop manager
High School or GED
453 satisfied customers
92 190E: running hot..Aux..engage..the head gasket once
92 190E is running hot. Aux fan does not seem to engage but I have not let it get to 110 deg because I have already had to replace the head gasket once. Also was under the impression that the switch w… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes: operating correctly..aux fan does not come on
1989 300 E Mercedes. All A/C functions operating correctly but the AUX fan does not come on. This is the fan in front of the condenser. I direct wired the fan to a 12 V battery and it spins properly u… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
87 mercedes 300: a/c relays to replace them..electrical issue
i have a 87 mercedes 300 E series. um tryin 2 locate the a/c relays to replace them. i have a electrical issue so i figured i would start there… read more
tklusman3
tklusman3
Owner, operator, master tech
High School or GED
121 satisfied customers
I have a 1986 300E and the auX fan does not come on. Also
I have a 1986 300E and the auX fan does not come on. Also sometimes after driving the car around in the heat it stalls and keep stalling until it sits for a while. This happens even though the tempert… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1991 350SDL: auxiliary..fans..coolant as it was not cooling very well
MBGURU: I have a 1991 350SDL whose auxiliary fans will not turn on. I turned the car on and let it warm up. The A/C was on, but I believe low on coolant as it was not cooling very well. The car heated… read more
MBGuru
MBGuru
Bachelor's Degree
282 satisfied customers
1995 E320: wagon..fans..kick..the high pressure AC circuit and they
I have a 1995 E320 wagon type W124. Is there an adjustment that I can make to the thermo switch for the electric fans to have them kick in sooner. I believe these are for the high pressure AC circuit … read more
supertech
supertech
Vocational, Technical or Trade Scho
2,235 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

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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

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

Hipo64

Hipo64

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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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