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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 11-14-2012, 08:32 AM
mike4mula mike4mula is offline
Mike4mula4d
Location: Carlsbad, Ca.
 
Join Date: Aug 2006
Posts: 34
Mein Auto: 1997 528i
weird behavior

I have something that just popped up recently on my 97 528. One Sunday morning as I was driving to the Miramar Air Show at +90 mph (hey, it was Sunday morning and no one was on the road), my emergency flashers came on, all the doors unlocked, and the dome lights came on. I first thought it had something to do with the speed, or I may have hit the emergency button (but how does that also trigger the other items?), or maybe it was just some Karma joke telling me to slow down, which I did after turning off the flashers (no need to draw any more attention to myself). When I finally parked, I noticed that the dome lights would not turn off until I unlocked, then relocked the doors. This also happened to my wife and son, and to me again a few days later. One very big downside of this is that we might not lock the doors and the lights stay on which drains the battery, and now I need a jump. I cannot relate it to anything else being turned on or off, and am told it might be related a module which might need to be replaced. Any thoughts?
Thanks Bimmerfest Forum people,
Mike
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  #2  
Old 11-14-2012, 10:23 AM
edjack edjack is offline
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Location: San Jose, CA
 
Join Date: May 2007
Posts: 8,902
Mein Auto: '97 540i 6 speed
Measure the battery voltage after the car sets overnight, before and after you start the engine.

Before s/b 12.5+; after, 13.5 14.
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Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
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  #3  
Old 11-14-2012, 10:37 AM
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chiefwej chiefwej is offline
Freude am Fahren
Location: Tucson, AZ
 
Join Date: Dec 2006
Posts: 2,295
Mein Auto: 2003 540i/6 //m-tech
I don't know how or why, but your car thought it had been in an accident. Those are all safety features triggered automatically when you have an accident.
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  #4  
Old 11-14-2012, 10:57 AM
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BigCo540i BigCo540i is offline
The Usual Suspect
Location: Richmond, VA
 
Join Date: Jul 2007
Posts: 2,712
Mein Auto: 98 E39 540i - 09 E90 328i
Quote:
Originally Posted by chiefwej View Post
I don't know how or why, but your car thought it had been in an accident. Those are all safety features triggered automatically when you have an accident.
roger that
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  #5  
Old 11-14-2012, 01:07 PM
mr magoo mr magoo is offline
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Location: south of Boston
 
Join Date: Mar 2010
Posts: 53
Mein Auto: 2000 528i
Was you wife driving 90, too?

Just asking. Need all of the symptoms.
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  #6  
Old 11-15-2012, 08:14 AM
mike4mula mike4mula is offline
Mike4mula4d
Location: Carlsbad, Ca.
 
Join Date: Aug 2006
Posts: 34
Mein Auto: 1997 528i
Ed, I'll measure those voltages and see what I get. Good thought and I know where you're going with that. Chief & BigCo, interesting you note that because my airbag light has come on and I wonder if something came disconnected in the steering wheel airbag. It was removed when I needed the ignition switch replaced and i wonder if the mechanic's work came partially undone. Mr. Magoo, no the my wife was not doing 90, and this also happens at much slower speeds. Thanks for all the input. I have some work to do.
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