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#1
11-27-2017, 01:43 PM
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Starting problem, could use some advise
I have a issue with my x5 not starting. It will start, I will drive it somewhere and then it will not start 20 min later. I drove it this morning breakfast and when I went out to start it It just made clicking sounds, like a low battery. AAA jumped it Second time this has happened. It starts in t he morning and then does not start. My question is this, why would it start and be driven but then not start after? I checked the voltage while it was running and it was 13.9 when it is sitting it is 12.6 I am still thinking starter, however it is strange it can be jumped started. Any suggestions would be appreciated Edit - just went and checked it with Voltmeter and the battery was reading 10.8. Must be the battery Last edited by Ojai5; 11-27-2017 at 02:03 PM. 
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#2
11-27-2017, 04:55 PM
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The voltage in the battery is 12.6 when it is necessary to have it jump started?
__________________
 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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#3
11-27-2017, 05:24 PM
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I had it jumped and drove it home, tested it when I got home and it was at 10.8
I just don't know why it started this morning and then didn't start after 20mins of sitting. Alternator seems to be working fine. Maybe just a bad battery Quote:
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#4
11-27-2017, 06:07 PM
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10.8 its either a bad battery or a bad alternator. I'm betting alternator. Bad battery would not crank in the morning. Alternator would be after a drive.
These are juts guesses based on the norm. You need to monitor the voltage while driving to know whats really going on AFER charging the battery back up fully.
__________________
Just BMW's - All cars and trucks was two pages long 1994 318is 1997 528i 2000 323i 2001 X5 3.0 auto 2005 X5 3.0 auto 2011 535xi auto 2013 X5 xdrive35 Turbo More are at my website Aftermarket E53 Radio Install
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#5
11-27-2017, 08:33 PM
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Since battery registered 13.9 with engine running I suggest having the battery load tested. You can also unlock the cluster and go to test 9 to check battery voltage and monitor alternator output.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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#7
11-28-2017, 04:27 AM
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Before replacing battery you definitely want to confirm the charging system is working. Get the battery load tested as well.
Sent from my iPhone using Tapatalk Pro
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife)
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#8
11-28-2017, 02:46 PM
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Well, DOh! I think it was a loose + battery cable. The aux amp connector I had added made it so it wasn't able to be fully tightened. I was able to turn the cable end freely on the battery.
The cluster test is about the most helpful thing ever. I am going to use it for the next week to keep track of everything. The reading are slightly lower than my voltmeter. I am going to trust BMW over harbor freight tool. thanks again
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#9
11-28-2017, 02:58 PM
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Readings are close enough to trust for troubleshooting. One the top ten rules of DIY. There are no coincidences. If you did some work and right after or shortly after you have a problem that could be connected--check your work.
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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