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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 10-09-2012, 09:52 AM
Sequence Sequence is offline
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Location: NC
 
Join Date: Nov 2011
Posts: 97
Mein Auto: 2001 525i
Car won't start

Got back from a 3 day trip and I go to start my 01 525i and it won't start. I thought it was just gas because I was a little low before I left. But when I filled it with a couple gallons, it still wouldn't start. At 1st it didnt make a sound. Electronics came on fine, but nothing in the engine department. Then after about the 3rd time, I heard a slight "moaning sound", and electronics lights were dim. I'm thinking it could be the battery but I'm not sure. Any ideas?

Update: I just bought a battery from autozone. After checking out, he told me I would have to take it to the dealer to get it "flashed" and it will probably cost an additional $100-$160. Is this true?

Last edited by Sequence; 10-09-2012 at 11:08 AM.
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  #2  
Old 10-09-2012, 11:05 AM
mbell666 mbell666 is offline
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Mein Auto: e39 2002 540i6
Battery, jump start it.

You probably have battery drain, number 1 cause is the FSU. If you search on here you'll find a lot, inc a DIY on how to replace it and info on how to diagnose battery drains.
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An e39 is like a beautiful wife, needs constant attention, lots of money, lets you down at the worse times but you’d never be without it.
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  #3  
Old 10-09-2012, 11:08 AM
edjack edjack is offline
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If you've not noticed erratic blower performance, or none at all, probably not the FSU. Another failure symptom is inability to control the blower speed.

Battery s/b at 12.5+ after setting overnight. With engine running, s/b 13.5+. Measure and report back.
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  #4  
Old 10-09-2012, 11:14 AM
jygesq jygesq is offline
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e39 does not require registration or flashing

Quote:
Originally Posted by Sequence View Post
Got back from a 3 day trip and I go to start my 01 525i and it won't start. I thought it was just gas because I was a little low before I left. But when I filled it with a couple gallons, it still wouldn't start. At 1st it didnt make a sound. Electronics came on fine, but nothing in the engine department. Then after about the 3rd time, I heard a slight "moaning sound", and electronics lights were dim. I'm thinking it could be the battery but I'm not sure. Any ideas?

Update: I just bought a battery from autozone. After checking out, he told me I would have to take it to the dealer to get it "flashed" and it will probably cost an additional $100-$160. Is this true?
Only f10 newest five.
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  #5  
Old 10-09-2012, 02:44 PM
Sequence Sequence is offline
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Location: NC
 
Join Date: Nov 2011
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Mein Auto: 2001 525i
Great...Just replaced the battery. Problem solved!!! Thanks
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  #6  
Old 10-09-2012, 02:57 PM
mbell666 mbell666 is offline
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I'd strongly recommend you check for a battery drain, put an amp meter between negative on battery of car with car locked, wait 16 minutes for it to go to sleep and check the current is ~40mA. (There is good guide on here)

I had a leak on my car, put new battery on it not knowing I had a leak. Everything was fine for month or so, until i didn't drive it for a 2/3 days*, then the battery was flat again. Letting the battery go flat isn't good for it, so you damaging your nice new battery if it happens.
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An e39 is like a beautiful wife, needs constant attention, lots of money, lets you down at the worse times but you’d never be without it.
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  #7  
Old 10-09-2012, 08:18 PM
Sequence Sequence is offline
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Location: NC
 
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Mein Auto: 2001 525i
Quote:
Originally Posted by mbell666 View Post
I'd strongly recommend you check for a battery drain, put an amp meter between negative on battery of car with car locked, wait 16 minutes for it to go to sleep and check the current is ~40mA. (There is good guide on here)

I had a leak on my car, put new battery on it not knowing I had a leak. Everything was fine for month or so, until i didn't drive it for a 2/3 days*, then the battery was flat again. Letting the battery go flat isn't good for it, so you damaging your nice new battery if it happens.
Did you find out where your leak was coming from?
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  #8  
Old 10-10-2012, 07:05 AM
mbell666 mbell666 is offline
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Mein Auto: e39 2002 540i6
Yes, it was the AC Control panel that I'd replaced after my original one died. The second hand unit I bought had a fault. Very very unlikely to be the same issue on yours.

It may have just been your battery but for the sake of a few minutes it best to check rather than get stranded somewhere.
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An e39 is like a beautiful wife, needs constant attention, lots of money, lets you down at the worse times but you’d never be without it.
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  #9  
Old 10-10-2012, 09:52 AM
Sequence Sequence is offline
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Location: NC
 
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Mein Auto: 2001 525i
Well My LCM is having problems so it could be draining battery slowly. I have a new LCM in hand ready to be installed as soon as I fix the seals on my Sunroof + Windshield.
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  #10  
Old 10-10-2012, 09:55 AM
edjack edjack is offline
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LCM/LKM needs to be coded to work correctly.
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  #11  
Old 10-10-2012, 09:59 AM
Sequence Sequence is offline
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Location: NC
 
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Mein Auto: 2001 525i
Yeah I've already got a guy who will code it for me. The Tamper dot is "undesirable" in the eyes of many, including myself
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  #12  
Old 10-10-2012, 12:03 PM
mbell666 mbell666 is offline
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Mein Auto: e39 2002 540i6
You could check at the battery for a leak if you concerned or modify a fuse so you measure a the current following through a circuit and still that in place of the fuse for the LCM/LKM.
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