I can not seem it fine any answer to this. Is there a Cabin filter motor and A
Climite control Blower motor also ? If so were is the Cabin filter motor? Everytime
I use the Radio I can hear a swine and it loudler when I speed up and it get lower when I slow down. I have removed the climite motor and lub it up it works
fine now? I have a 93 500SEL
Thanks

The early W140's have a COMPUTER box blower motor.
There isn't any cabin filter blower motor.

The in-car temp sensor has a small motor to pull in air for sampling of the temp, by the sunroof switch.

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Thanks MB Doc, I hear a buzz coming form that slot.Is this easy to remove or shoud I have my Tech repace it?. In the 126 you could blow air into the opening,I do not think this would be a good thing with this.....