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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 10-15-2012, 05:49 PM
rdemellovidal rdemellovidal is offline
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Location: Brazil
 
Join Date: Oct 2012
Posts: 12
Mein Auto: BMW 540i E39 1997
BMW e39 DSC light on and "gun firing back"

Dear fanatics,

I just bought a "new" 1997 e39 540i. Currently have a 2001 e46 330xi. Am impressed by both, but even more by the 540i. Sure it needs work, but thatīs what I like about the whole thing.
Please help with a first problem: my car has the DSC light on and, worse, it gives these terrible "burps", with a quite violent stroke (like a gun firing back), when I change speeds after cruising, as if it doesnīt want to change gears in the automatic step transmission. A mechanic I know said it might be related to the DSC light and a possible traction failure. He suggests it coukd be fixed by the DSC wheel sensors.
Does it make sense to anyone? Has anyone had the same problem?
Thanks !
Ralph
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  #2  
Old 10-15-2012, 07:47 PM
edjack edjack is offline
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Location: San Jose, CA
 
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Posts: 9,054
Mein Auto: '97 540i 6 speed
Get the codes read by a BMW DIS, and go from there.
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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 10-15-2012, 07:47 PM
JimLev JimLev is offline
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Location: MA
 
Join Date: Dec 2003
Posts: 3,641
Mein Auto: 540/6, S60 Volvo, Tribeca
It could be a wheel sensor or a bad ABS module. If you have the system scanned it will tell you if there is a bad sensor and it's location.
Your car has ASC not DCS, they are two completely different systems.
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  #4  
Old 10-16-2012, 11:00 PM
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bluebee bluebee is offline
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Location: San Jose, California
 
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Posts: 21,066
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by JimLev View Post
If you have the system scanned it will tell you if there is a bad sensor and it's location.
Hi Jim,
Are you sure about that?
The OP doesn't seem to have the trifecta, so, maybe it's different when just the ASC light is lit (and not the BRAKE and/or ABS lights) ... but with the trifecta, a "system scan" is generally useless because (as 540iman has often repeated), the diagnostic tools are not hooked up between the sensor and the ABS control module - so what you get in that case is whatever anomaly the ABS control module is thinking ... which often is wrong (almost always, if not always since it never implicates itself).
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Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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  #5  
Old 10-21-2012, 06:59 AM
rdemellovidal rdemellovidal is offline
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Location: Brazil
 
Join Date: Oct 2012
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Mein Auto: BMW 540i E39 1997
Thanks to all. What does ASC stand for?
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