When I turn on the climate control on low fan I hear a humming/buzzing noise but when I increase the fan speed it disappears. I had it diagnosed from Mercedes and they told me the blower motor needs replacement. It was too expensive to have them do the work so I just put it off. Is there any way I can fix it without having to replace the whole unit? Please help! Thanks
Blower Motor Noise on 2005 Mercedes-Benz S430
by Visitor in Seattle, WA on April 20, 2011
ANSWER by overbys on April 20, 2011
they are correct; you need a new blower motor $790 plus labor. you could try removing the motor yourself to see if you can fix it yourself, but i really think you are wasting your time. this is a common failure in the 220 chassis MB vehicles.