Fan cooling operation kicks in when car is off
Thread Starter
Newbie
Joined: Aug 2016
Posts: 5
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From: Cyprus, Lemesos
Mercedes Benz E250 CDI Blueefficiency 2009
Fan cooling operation kicks in when car is off
Hi everyone,,
My car is a 2009 E 250 CDI (w212) and I would appreciate your help/comments on the following:
Occasionally (once every few days) after I park my car and is off, 45 minutes more or less, the fan kicks in and works for 10-60 seconds, as if the car’s engine needs cooling. I checked the temperature a few times while this was happening and it was ok. Also a few times, it started when I unlock the car so I get in to drive it, it could not be just a coincidence.
Let me make it clear that I do not refer to this happening when the engine is hot and running and I turn it off.
My mechanic is puzzled, as no msgs are given and there is no lead to follow.
Any comments will be much appreciated.
Update August 2020:
Occasionally the fan starts when I open the door or unlock the car. Has anyone else had this too? is it normal?
Now, fan runs for 30-40 minutes, an hour after I switch off the car (when it happens).
Thanks.
My car is a 2009 E 250 CDI (w212) and I would appreciate your help/comments on the following:
Occasionally (once every few days) after I park my car and is off, 45 minutes more or less, the fan kicks in and works for 10-60 seconds, as if the car’s engine needs cooling. I checked the temperature a few times while this was happening and it was ok. Also a few times, it started when I unlock the car so I get in to drive it, it could not be just a coincidence.
Let me make it clear that I do not refer to this happening when the engine is hot and running and I turn it off.
My mechanic is puzzled, as no msgs are given and there is no lead to follow.
Any comments will be much appreciated.
Update August 2020:
Occasionally the fan starts when I open the door or unlock the car. Has anyone else had this too? is it normal?
Now, fan runs for 30-40 minutes, an hour after I switch off the car (when it happens).
Thanks.
Last edited by cybenz; Aug 14, 2020 at 07:50 AM. Reason: Changed behavour - getting worse!
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From: Washington D.C.
2024 GLE63s / 2016 GLE63s (traded) / 2016 E63s / 2002 E55
Junior Member
Joined: Dec 2018
Posts: 18
Likes: 10
From: Brisbane, Australia
W212 E350
Hi All,
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
Junior Member
Joined: Jan 2019
Posts: 22
Likes: 0
From: Winchester, VA
E350 Sedan 4-Matic
Hi All,
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
Myron
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MBWorld Fanatic!
Joined: May 2018
Posts: 6,611
Likes: 6,561
From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Hi All,
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
I frequently find my 2011 E350 with a fan running noise well after shut off. Dealer couldn't find a fault. It turned out to be the Climate Control fan running to dry out the system which is normal.
Page 136 & 145 in the owners manual:
"Residual heat function may be activated automatically an hour after the key is removed . The vehicle is then ventilated for 30 minutes to dry the air-conditioning system."
Phillip,
Is the fan speed at this event a 100% speed, or much less than a 100% speed ?
Thanks
.
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