2004 E-320 A/C sounds like a jet getting ready to take off

2004 MERCEDES BENZ
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JBOONE200
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  • 3 POSTS
My 2004 E320 makes a loud sound like a plane getting ready to take off when the A/C is turned on higher settings. From the inside you can't hear the sound, it is only on the outside that you can hear it.

It sounds like it may be the engine fan kicking into high gear or something?

Any advice?
Jul 25, 2007 at 8:20 PM
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GFIMOTORCARS
  • ✓ASE Certified Mechanic
  • 673 POSTS
  • ASE Certified Mechanic
It's definately your fan kicking on. If you live in a very warm climate this could be a normal condition. MB fans can operate at very high speeds and are very efficient because of this.
Mar 26, 2009 at 11:21 PM
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