heater blower working intermittently

[robbo21]

Hello am looking for some info on my heater fan model w204 c250 2010. fan is working intermittently. i have read its probably the heater blower motor resistor. i have removed what i think is the part from under the dash pic 1 but have also found another part advertised as the heater fan blower resistor that seems a totally different part pic 2. could anyone tell me wether i have removed the correct part. and what does each piece control. thanks for any info.

 

[mattkh]

Hello am looking for some info on my heater fan model w204 c250 2010. fan is working intermittently. i have read its probably the heater blower motor resistor. i have removed what i think is the part from under the dash pic 1 but have also found another part advertised as the heater fan blower resistor that seems a totally different part pic 2. could anyone tell me wether i have removed the correct part. and what does each piece control. thanks for any info.

Did you remove the part from the right side or the left..?
Please put up a picture of any numbers/letters you can see on the part you removed.

 

[robbo21]

hi yes i removed it from under the glove box passenger side and the piece is exactly like the first picture with a heat sink on it, thanks.

 

[mattkh]

hi yes i removed it from under the glove box passenger side and the piece is exactly like the first picture with a heat sink on it, thanks.

In that case, you have to replace like with like.
By the way, can you set the fan to run at different speed settings...
Is it intermittent at all settings or only at a particular setting..?

 

[robbo21]

Sorry for the delay . intermittent on any fan setting . i cleaned the sensor before replacing it and it hasnt done it since. but im sure it will sooner or later. now i know what it looks like am gonna replace with new next time .

 

[Misterdog]

i cleaned the sensor before replacing it

Is there a sensor built in ?
Mine seems to fluctuate on some of the speed settings, all settings work but with some fluctuation in speed especially at the higher end.

 

[robbo21]

not sure about the sensor but when it stops it doesnt work on any setting.

 

[Misterdog]

Blower motor, resistor: how it works, symptoms, problems, testing

What is a Blower Motor Resistor in a car, problems, symptoms, blower motor and resistor testing, replacement

www.samarins.com

Hmm, could it have been dirty contacts ?

 

[Conorrx77]

I'm having the same problem with my c200 estate. Which part did you clean? And what did you use to clean it? Thanks