The blower motor and resistor move the air through the HVAC system. If you are starting to hear a whining sound when the motor is running or the motor doesn’t run at all there is a good chance that the motor is going bad. All kinds of things can end up in the top of the motor so at the very least you should remove the motor, inspect it for debris and clean out the housing.
Time: 2 hours
Tab: $90 to $300
Tools: T20 Torx driver:https://www.pelicanparts.com/Mercedes-Benz/catalog/tools/sockets-ratchets-drive.htm?utm_source=SuperTech_header&utm_medium=web&utm_campaign=tool_links&utm_content=driver, rag:https://www.pelicanparts.com/catalog/shopcart/CARE/POR_CARE_CAREXT-detail.htm
Parts Required: Blower motor:https://www.pelicanparts.com/cgi-bin/supertech/catalog.cgi?action=frameset&return-url=/cgi-bin/supertech/catalog.cgi%3Faction%3Dframeback%26page%3D3459&catalog-url=http%3A%2F%2Fwww.pelicanparts.com%2Fcatalog%2FSuperCat%2F4625%2FMBZ_4625_ELSWCH_pg1.htm%3Futm_source%3DSuperTech%23item4
Hot Tip: Get comfortable under the dash
Performance Gain: Functioning climate control
Complementary Modification: Change the cabin air filter:https://www.pelicanparts.com/techarticles/Mercedes-W204/64-INTERIOR-Cabin_Air_Filter_Replacement/64-INTERIOR-Cabin_Air_Filter_Replacement.htm
Applicable Models: https://www.pelicanparts.com/catalog/SuperCat/W204_catalog.htm
Mercedes-Benz C250 (2012-14)
Mercedes-Benz C300 (2008-14)
Mercedes-Benz C350 (2008-14)
Read the Full Article:
https://www.pelicanparts.com/techarticles/Mercedes-W204/66-ELEC-Blower_Motor_Replacement/66-ELEC-Blower_Motor_Replacement.htm
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What should I do if my AC on my w204 is blowing hot air?
I changed my blower motor today using this video I found you had to twist the motor anti clockwise to remove on my uk c250 2011