E350d

Budo

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Jan 8, 2018
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Your Mercedes
E350d 2010
Good evening all

Mercedes E350d 2010

the engine fan is running at max speed when the car is turned off. The engine fan switches on when the car is switched off and the doors are closed.

I noticed that opening the driver side door will switch off the fan. But soon afterwards, e.g. less than a minute or so, the engine fan will roar back to life. It will generally stay on for a couple of minutes and then go to sleep for a minute and then repeat the cycle.

I replaced the complete fan unit but it’s no help and the problem is still the same.
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Headhurts

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Jul 24, 2014
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Location
Norwich, Norfolk
Your Mercedes
Mercedes GLC300 2021
Sounds strange behaviour to me, on one occasion on returning home my fan was going full pelt despite it not being a hot day or car had been driven hard.

The fan continued when car was stopped and turned off, I believe at this time the car was running a regeneration as there was a lot of heat from beneath the car.

I suspect it may need to be taken to dealership or specialist.

Feel free to ignore my comments as I have no technical knowledge on these cars.

Robin


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