2004 E320 Sport intermittent A/C fan problem
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Joined: Oct 2017
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From: Charlottesville, Virginia, USA.
2004 W211 E320 Sport
2004 E320 Sport intermittent A/C fan problem
My 04 E320's AC fan works intermittently. It's fine for a short while (responds to all input controls and all fan speeds), but, after awhile the fan will only blow with position 3 force.. Won't blow any harder no matter where the fan setting is selected. Then, after awhile, the fan becomes adjustable again and it returns to normal function. BTW the A/C is serviced, properly charged, etc. I've also checked fuses, all seem fine.
Have not checked the blower motor or regulator, which seems to be a popular culprit here. Or, the control panel?
What do you think, ladies and gents?
Thanks, all
Have not checked the blower motor or regulator, which seems to be a popular culprit here. Or, the control panel?
What do you think, ladies and gents?
Thanks, all
Last edited by vagt6; Apr 8, 2020 at 12:14 PM. Reason: mispelled word
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Joined: Aug 2004
Posts: 545
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From: Southern California
So this might be related to the Voltage Regulator issue in your other post. I believe when the car has Battery Protection mode, the AC fan is regulated to maximum of 50% blower speed. These cars need a lot of electrical power for everything to function properly. Get the VR checked out first. I think this issue with the fan will solve itself once electrical power is fully restored.
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So this might be related to the Voltage Regulator issue in your other post. I believe when the car has Battery Protection mode, the AC fan is regulated to maximum of 50% blower speed. These cars need a lot of electrical power for everything to function properly. Get the VR checked out first. I think this issue with the fan will solve itself once electrical power is fully restored.
