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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 01-05-2013, 12:27 AM
BimmerBoii BimmerBoii is offline
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Location: Orlando, FL
 
Join Date: Nov 2012
Posts: 7
Mein Auto: 2003 530i
Trans failsafe prog

Before writing this post I search the code and every post the car has the same problem as mine, take forever to accelerate. A buddy of mine says it is stuck in "limb mode" and I need a new battery. I took the car to Advance Auto Parts and tested the battery, alternator, starter and the battery was good and alternator and starter are excellent. My friend says "Of course the battery is good bc your alternator charges it but it does not have enough juice to power your car"

Lol sorry for all that but what do you think?
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  #2  
Old 01-05-2013, 05:27 AM
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Fudman Fudman is offline
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Location: Sudbury, MA
 
Join Date: Apr 2007
Posts: 6,225
Mein Auto: '02 530i Sport auto
Pull the codes and reset the tranny. An ODBII will read some tranny codes. You'll need a GT-1, INPA or equivalent scanner to read all codes and reset the tranny. Sometimes this is triggered by an electrical issue or a wet sensor. Other times, it is a failing tranny. Good luck.
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Old 01-05-2013, 06:27 AM
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Flybot Flybot is offline
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Location: Louisville, Ky
 
Join Date: Aug 2009
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Mein Auto: '98 528
In the most general terms:
-If your car starts, battery good
-If you dont have a Red battery light on the dash your alternator is good.

The transmission will go into fail safe when the system voltage drops too low, like a bad alternator and your just running on battery. But if you dont have the above conditions, it sounds like a transmission issue.
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Old 01-05-2013, 09:01 AM
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bluebee bluebee is offline
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Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,248
Mein Auto: 02 BMW 525i M54 auto 130K
For testing the alt & bat, go here:
- Complete DIY for how to test a BMW battery & alternator (1)

For trans failsafe solutions, go here:
- How people tested & resolved transmission "Trans Failsafe Program", aka "Limp Mode" (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16)

Both found simply by /keyword F3 in the bestlinks.
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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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