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Discussion Starter #1
Hi, my ac is blowing cold but I never here the fan running. Surely the secondary fan should kick in whilst stationary ?
 

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AC on doesn't mean the fan has to be on. Check the coolant temp on the instrument cluster secret menu.
 

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AC on doesn't mean the fan has to be on. Check the coolant temp on the instrument cluster secret menu.
I take it the coolant fan only operates when the engine is hit, I thought it cooked the Aircon rad ?
 

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Yes it cools all the radiators and the condenser as well. If you've never heard the fan come on and suspect a fault you can test it with a diagnostic scanner. Although I don't think the AC would work if the fan is faulty.
 

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I've been reliably informed the cooling fan on the E60/61 lci is incredibly quiet and not the usual whoosh you get with most systems. As you say my a/c works, while cruising and in traffic, so it must be functioning as it should ?
Yes it cools all the radiators and the condenser as well. If you've never heard the fan come on and suspect a fault you can test it with a diagnostic scanner. Although I don't think the AC would work if the fan is faulty.
 

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It's not just on or off. It has multiple speeds and if it's at max cooling you will hear it for sure. Search for E60 instrument cluster secret menu and look at the coolant temp from there.
 

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I've been reliably informed the cooling fan on the E60/61 lci is incredibly quiet and not the usual whoosh you get with most systems. As you say my a/c works, while cruising and in traffic, so it must be functioning as it should ?
If you disconnect the sensor on the AC low-pressure pipe, the fan should run at max speed. It's on the left hand side on the foiled pipe. That should confirm it is running correctly. It gets very loud!
 
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