Cooling fan not working

2009 MERCEDES BENZ 350SDL
300 MILES • 0.5L • V6 • AUTOMATIC
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DANNY_7
  • MEMBER
  • 1 POST
My cooling fan just stopped running suddenly. And the temperature began rising a little above average. What could be the cause?
And if it has to do with fuse, how do I locate the cooling fan fuse in the fuse box?

Thanks
Oct 13, 2020 at 6:42 AM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

For some reason, the diesel model isn't listed in any of my manuals. However, I will try my best to help.

Keep in mind, the cooling fan motor itself may have failed. Take a look through this link to start to gain a better understanding of how it works:

https://www.2carpros.com/articles/how-an-electric-cooling-fan-works

I'm not sure if you have a single or double fan design. However, if you turn the A/C on, the fan should engage. Is that happening?

I don't have the pics of the fuse/relay boxes. But there should be a fuse and one or more relays . Let me know if you were able to locate them.

Joe
Oct 14, 2020 at 5:55 PM
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