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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #1  
Old 03-01-2012, 04:05 PM
grapes87 grapes87 is offline
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Location: USA
 
Join Date: Feb 2011
Posts: 85
Mein Auto: Diesel Sedan
Turning off during Regen

Any harm?
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  #2  
Old 03-01-2012, 04:20 PM
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floydarogers floydarogers is offline
Pedant and Curmudgeon
Location: Renton, WA
 
Join Date: Oct 2010
Posts: 3,773
Mein Auto: 335d, 328d, Toyota T100
No.
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  #3  
Old 03-01-2012, 06:22 PM
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Flyingman Flyingman is offline
hang up and drive!
Location: Miami
 
Join Date: Sep 2009
Posts: 2,078
Mein Auto: 335d
I think I just did twice in the past couple of days. I can here a fan running after I shutdown and detect lots of heat being blown from the engine compartment. I'd say perhaps it was just the electric drive radiator fan, but I was not driving long or hard, so no reason really for the radiator fan to continue running.

I'm just assuming it's the regen doing it's thing.
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  #4  
Old 03-03-2012, 08:29 AM
grapes87 grapes87 is offline
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Location: USA
 
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Mein Auto: Diesel Sedan
So what happens? It started about the time I got home - then put about 100 miles on it the next day, with no indication (via the hidden temp menu) of a regen.
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  #5  
Old 03-03-2012, 11:15 AM
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Flyingman Flyingman is offline
hang up and drive!
Location: Miami
 
Join Date: Sep 2009
Posts: 2,078
Mein Auto: 335d
I have no idea?

I don't worry about, just enjoy the ride!
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1999 Silver R1200C (Ret)
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  #6  
Old 03-03-2012, 08:48 PM
Snipe656 Snipe656 is offline
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Location: Humble, Tx
 
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Posts: 4,032
Mein Auto: 2009 335d
Yeah don't worry about it. I have turned my car off countless times during a regen.
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  #7  
Old 03-04-2012, 10:59 AM
hammick hammick is offline
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Mein Auto: 2011 335d
How does one know a regen is ocurring.
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  #8  
Old 03-04-2012, 11:21 AM
4pipes 4pipes is offline
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Location: Bay Area, California
 
Join Date: Aug 2006
Posts: 77
Mein Auto: 2011 335d Alpine White
Sometimes you can smell a slight burning odor. Most of the time you don't even know, especially at freeway speeds.
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  #9  
Old 03-04-2012, 11:54 AM
listerone listerone is offline
Oil Burners Rule!
Location: Connecticut
 
Join Date: Jul 2009
Posts: 902
Mein Auto: 2014 328d
Quote:
Originally Posted by hammick View Post
How does one know a regen is ocurring.
The way that *I* was able to know was to watch the mpg reading in the instrument cluster.If it's,say,40mpg at a steady 65mph and then suddenly drops to 30 (still at a steady 65mph) then you know one's in progress.
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Fuelly
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  #10  
Old 03-04-2012, 12:04 PM
Snipe656 Snipe656 is offline
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Location: Humble, Tx
 
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Mein Auto: 2009 335d
I think it is the only way that your fans will remain running after you shut down the car. At least in my entire ownership it never has seemed my fans stayed on after shutting down and it was not within a regen process. The fans will run for quite awhile too.
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  #11  
Old 03-06-2012, 04:39 PM
railroader railroader is offline
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Location: Southern Calif., USA
 
Join Date: Apr 2010
Posts: 159
Mein Auto: 2014 535d M-Sport
As others have observed, there seems to be no real rhyme or reason to when the regens will occur;
I've seen one happen after a very short little hop of less than 10 miles on a cool morning, after an all
night sit. Another occurred after a long freeway run on a hot day. They just happen when they happen,
and I guess (hope) that the car knows what's best for itself. I've only actually smelled the "slight burning
odor" once -- when the car was quite new, and it was the first regen I noticed.

Last edited by railroader; 03-06-2012 at 04:41 PM. Reason: grammar fix-
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  #12  
Old 03-06-2012, 04:43 PM
4pipes 4pipes is offline
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Location: Bay Area, California
 
Join Date: Aug 2006
Posts: 77
Mein Auto: 2011 335d Alpine White
Mine seem to occur around every 500-700 miles with my style of driving. About once every fill up.
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'79 530i, '93 325iC, '97 740i, '99 540i, '00 M5, '03 X5, '05 645i, '09 335d, '11 335d
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