Intermittent heating/cooling fan
Thread Starter
Junior Member
Joined: May 2019
Posts: 46
Likes: 7
Glk 250 2015
Intermittent heating/cooling fan
Hi folks, My question is simple. Has anyone experienced an intermittent Heating/AC fan in there GLK250 2015 or any other GLK? It’s always about 50-50. Sometimes the fan will work sometimes it won’t.
Any thoughts will be appreciated. Thanks. Chad
Any thoughts will be appreciated. Thanks. Chad
Member
Joined: Oct 2020
Posts: 183
Likes: 41
From: Ottawa, Ontario
2013 GLK350 Canada
Mine was working about 30% of the time. Disconnected wiring and had to press on a little tab to be able to rotate the housing so I could remove the fan assembly. Take a look with a good flashlight to find the release tab. Press it in and turn the assembly. It drops out. Put a mark on the housing and mounting hole before removal to know what position to put it back in.
I rinsed the motor in alcohol and also found an inductor nearly touching the metal frame (bent it over so slightly to move it out of the way). No need to remove the fan from the motor. There was a lot of carbon dust from the motor brushes packed between the inductor and the metal frame. Wondering if there was a slight electrical short circuit through the carbon blob causing it to fail. You also might use compressed air to blow it out, but the dirt will go EVERYWHERE. If rinsing with alcohol, make sure to let it all evaporate and dry. I blew the alcohol out and then dried mine in the sun for an hour. No one needs an electrical fire.
It takes a bit of standing on your head with the seat moved fully back to do this job. The dealer rep said they get the smallest guy in the shop to do it.
Mine still works well after two seasons, but was a bugger to reinstall. Main side benefit is I learned how to stand on my head in the car
I rinsed the motor in alcohol and also found an inductor nearly touching the metal frame (bent it over so slightly to move it out of the way). No need to remove the fan from the motor. There was a lot of carbon dust from the motor brushes packed between the inductor and the metal frame. Wondering if there was a slight electrical short circuit through the carbon blob causing it to fail. You also might use compressed air to blow it out, but the dirt will go EVERYWHERE. If rinsing with alcohol, make sure to let it all evaporate and dry. I blew the alcohol out and then dried mine in the sun for an hour. No one needs an electrical fire.
It takes a bit of standing on your head with the seat moved fully back to do this job. The dealer rep said they get the smallest guy in the shop to do it.
Mine still works well after two seasons, but was a bugger to reinstall. Main side benefit is I learned how to stand on my head in the car
