Blower Motor Problem
Thread Starter
Newbie
Joined: Apr 2009
Posts: 2
Likes: 0
1987 Mercedes-Benz 300E
Blower Motor Problem
I have a Mercedes Benz 300E 1987
My blower motor does not work. No matter what buttons I pressed it would not work. I got to it took it out and gave it a thorough blowing. After words I gave it direct power from the battery and in spun fine. I tested the red wire and its giving power. I changed the fuse, still nothing. I also took the bigger fuse from the second fuse box and have it out. But I don't know now what I should check. There is also a blue wire connected to the blower motor that I don't know what it is for. If someone could point me the right direction, because I don't know what to do.
My blower motor does not work. No matter what buttons I pressed it would not work. I got to it took it out and gave it a thorough blowing. After words I gave it direct power from the battery and in spun fine. I tested the red wire and its giving power. I changed the fuse, still nothing. I also took the bigger fuse from the second fuse box and have it out. But I don't know now what I should check. There is also a blue wire connected to the blower motor that I don't know what it is for. If someone could point me the right direction, because I don't know what to do.
Member
Joined: Sep 2008
Posts: 186
Likes: 0
1992 300TE 4matic wagon
I have a Mercedes Benz 300E 1987
My blower motor does not work. No matter what buttons I pressed it would not work. I got to it took it out and gave it a thorough blowing. After words I gave it direct power from the battery and in spun fine. I tested the red wire and its giving power. I changed the fuse, still nothing. I also took the bigger fuse from the second fuse box and have it out. But I don't know now what I should check. There is also a blue wire connected to the blower motor that I don't know what it is for. If someone could point me the right direction, because I don't know what to do.
My blower motor does not work. No matter what buttons I pressed it would not work. I got to it took it out and gave it a thorough blowing. After words I gave it direct power from the battery and in spun fine. I tested the red wire and its giving power. I changed the fuse, still nothing. I also took the bigger fuse from the second fuse box and have it out. But I don't know now what I should check. There is also a blue wire connected to the blower motor that I don't know what it is for. If someone could point me the right direction, because I don't know what to do.
Kevin
Former Vendor of MBWorld
Joined: Jan 2009
Posts: 253
Likes: 0
From: California
Mercedes
I looked in my ALLDATAdiy.com for your 300E, and it said that you need to check the control voltage for the blower regulator. The Current Regulator (N29) is a pretty easy part to replace on your Mercedes.
Junior Member
Joined: Sep 2008
Posts: 61
Likes: 0
From: Orlando, FL
1993 Mercedes 400E V8 4.2L
I had the same problem and did the same steps as what you did. Still no air, i finally figure it out, it was the blower regulator that was fried. I might be wrong, but that's how I got my blower motor to work. Now, you have 2 options, either bypass the wires to the fuses ( which can burn the fuse often) or change the blower motor regulator for $150-400. I bypass with wires and I only blew 2 fuses in a year. Trying to save money, temporarily, with the recession. I hope this help you
