E60 530D Main fan running at high rpm - Bimmerfest - BMW Forums

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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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Old 10-17-2012, 02:14 PM
roadrunner2008 roadrunner2008 is offline
Location: Ireland
Join Date: Feb 2008
Posts: 40
Mein Auto: Nothin But The Best
Unhappy E60 530D Main fan running at high rpm

04 530D 95k miles (No other issues)

I started my car today engine started no problem, 2 seconds later the fan kicked in at high RPMs! It's so loud it drowns out the sound of the engine even with the bonnet open!.

I left the car idle for about 5 minutes to see if the fan would stop but no luck, checked all the fluids etc & the engine and oil temps were normal so I went for a 10 minute drive. Cool wet day around 10c/50f

The car ran normally without any warning icons on the dash/iDrive.
Got back home turned off the engine let it cool for a bit started the engine again and of course the fan kicked in running at a crazy speed, the damn thing sounds like a huge vacuum
First thing that came to mind was the thermostat is fried so I decided to check around the net to see what I could find and yep it sounds like either the temp sensor or something linked to the thermostat.

That was all fine and dandy until I started the car again same issue with the fan running constant and at high speed but then I turned off the engine and heard this weird (what I can only describe as) an electronic beeping or an alarm that had been hit with a hammer this beeping stopped after about 30 seconds but beeped twice when I unlocked the car with the remote!

So is it the thermo making the fan kick in at a constant high RPM?
And what the hell is that electronic beeping sound?

Anyone help a fellow bimmer nut out before I get hijacked by a main dealer ?
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530d main fan at high rpm

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