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X5 E53 (1999 - 2006)
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  #1  
Old 01-26-2014, 10:19 AM
malonzo malonzo is offline
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Location: wisconsin
 
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Mein Auto: 2005 X5 4.4
rear brake light problem

2005 X5 , my drivers side rear brake light intermittently stops working during daily driving, i get the dash board warning rear brake light not working, but then after a few minutes the warning goes out and it works. This happens several times a day. I checked the bulb it is fine , i even replaced it with a new bulb, still the same problem. Could it be i need to replace the socket.one more of the 1 million horror stories of owning an X5.
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  #2  
Old 01-26-2014, 10:31 AM
puddinboo puddinboo is online now
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just the last week mine was doing that once every 2-3 day on the right side. I`m thinking probally a coroded connection or maybe a broken wire some where, it also could be a bad filament in the bulb, the bulb may look good doesn`t meen it is to confirm this just flick the bulb with your finger and see if the filament inside looses contact. I haven`t checked mine out yet to cold -30c brrr.
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Last edited by puddinboo; 01-26-2014 at 10:33 AM.
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  #3  
Old 01-26-2014, 10:43 AM
White94RX White94RX is offline
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The taillight circuit board is burned up where the bulb socket contacts it. Some guys replace the taillight, but I repair them with solder. Never had one come back.
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  #4  
Old 01-26-2014, 10:44 AM
puddinboo puddinboo is online now
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is the board easy to get out to solder?
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  #5  
Old 01-26-2014, 10:49 AM
puddinboo puddinboo is online now
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is this what your talking about?
http://www.bmwmotorsports.org/pdf/e5...y%20Repair.pdf
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  #6  
Old 01-27-2014, 11:56 AM
White94RX White94RX is offline
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Yeah. That's exactly how I fix them.
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  #7  
Old 01-27-2014, 12:32 PM
DDutchman DDutchman is offline
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Location: Florida and Germany
 
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Mein Auto: 2005 X5 3.0i
I have the same problem plus...

I thought I had cleaned up the corrosion enough to fix the taillight problem, but I am still getting the error. I thought the light connections loosened because I live miles down a bumpy dirt road. Between the dust on dry days and the mud on rainy ones I figured it must be dirt and vibration. The modules are clean, though.

Coinicdentally, my year old battery began failing to hold a charge at the same time. Has anyone found battery drain associated with brake light problems? Somewhere there is a short. Alternator tests out according to the OBC. Battery tested good at O'Reilly's. Got the warning light coming home. Car wouldn't start this morning.

Good thing I have supplies. It is also supposed to snow and sleet here in The Panhandle. That means days without electricity.
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  #8  
Old 01-27-2014, 02:59 PM
puddinboo puddinboo is online now
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Quote:
Originally Posted by White94RX View Post
Yeah. That's exactly how I fix them.
I do alot of soldering at work ,looks straight forward. so you don`t have to take the taillight apart then ,just remove it from the body?
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  #9  
Old 01-27-2014, 03:20 PM
White94RX White94RX is offline
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I can bet you need a new battery. It has nothing to do with the taillights.
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