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Cooling Fan does not stop

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Old 04-19-2008, 01:27 PM
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C-Class C230K W203
Cooling Fan does not stop

I took my car (2004 C230K) out of the garage to wash it and when I put it back in and switched it off the cooling fan was still working. I am sure that this was not in order to drop down engines temp because the engine did not run for more than 30secs. The fan was working even 15minutes later. Can anybody suggest what the problem is?
Thank you
Old 04-19-2008, 01:57 PM
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Originally Posted by 54C230K
I took my car (2004 C230K) out of the garage to wash it and when I put it back in and switched it off the cooling fan was still working. I am sure that this was not in order to drop down engines temp because the engine did not run for more than 30secs. The fan was working even 15minutes later. Can anybody suggest what the problem is?
Thank you
Temp sensor in radiator?
Ha, but likely on our cars, thats connected to the CANBUS and the ECU
decides.
But that would be the most likely culprit.

If you remove it, you can test it by using an ohmmeter, and a hot cup of tea,
though the tea may taste funny after you dip the sensor in it.
Old 04-19-2008, 10:29 PM
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bone stock E55 AMG
sounds like faulty fan control unit...
Old 04-19-2008, 11:22 PM
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a quarter mile at a time
Old 04-19-2008, 11:29 PM
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Try running the car and letting it cool again.

This problem happened ONCE on a Porsche of mine. I figured a stuck coolant thermostat switch. It drained the battery...

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