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#2
01-05-2011, 08:34 AM
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Fan is electronicly controlled by blower regulator, common failure.
Testing is done with volt meter at blower motor. Failure can happen if the "dust" filter isn't changed every 25K
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator 
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#3
01-06-2011, 08:01 PM
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How about the blower motor fuse. It sits along the driver side inside the engine compartment. 30amp
__________________
1995 E420 152k 1991 300D 2.5 348116 daily driver 1992 300E 2.6 196k-work in progress(head gasket)  2002 BMW 745Li 93k
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#5
01-07-2011, 09:06 AM
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The regulator is common, and seized bearings on the blower motor is also common. Take the cover off and try to spin the motor, the motor speed is controlled by the regulator and is in the ground side of the motor. I dont know why they dont fuse it. I think there is DYI on this on this site.
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#6
01-07-2011, 09:08 AM
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The regulator is common, and seized bearings on the blower motor is also common. Take the cover off and try to spin the motor, the motor speed is controlled by the regulator and is in the ground side of the motor. I dont know why they dont fuse it. There is DYI on this on this site, (140 Blower motor)
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Linear Mode
