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#11
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#12
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If you don't have one purchase a multimeter so you can check battery voltage, monitor alternator output and check for parasitic drain. That is next step.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#13
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Quote:
It started at 14.2v when idling. I drove for a couple minutes and it dropped to 14.1v. it randomly jumped to 13.8 for under a second. At idle: 15 minutes 14.0v 20 minutes 13.9v 25 minutes 13.8v 30 minutes 13.6v 35 minutes- drove it for a couple minutes, jumped around a bit 13.9 to 13.5 So seems the voltage is VERY slowly dropping... Is that normal? What should I check? As for the multimeter/parasitic test- shipping will take a while. In the mean time, I plugged in my old battery and charged it on jumper cables. It also triggered the trans fail-safe. Is it unlikely both batteries fail the parasitic test? Really don't want to kill the new battery! What can I do to avoid this?
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02' X5 E53 3.0i Petrol (210k km/130k miles) Will trade coding skills (Javascript, React, Node, Django, Mobile dev) for car knowledge ODB II: ELM 327 (Torque Pro app) Last edited by mcfee03; 10-15-2017 at 05:49 PM. |
#14
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Sounds normal to me. The system will work fine with 12.2 or higher voltage.
As for the battery 12.6 is full. So as long as the voltage is over 12.6 running its not going to bother the battery any. As long as its over 12.8 its actually charging the battery too. For your purposes your good to go alternator wise I imagine. On a side note for future references the voltage shown in the dash reading is not accurate to actual power. I use a cigarette lighter volt meter to keep up with actual readings from time to time. The dash readout is higher than actual voltage. I need to see if I have a pic of that thing. You still need to get a volt meter for testing things like your cig lighter for example that your having problems with.
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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 |
#15
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Alternator seems to be working properly. Turn on the bright lights, radio and heater fan on high and see if the voltage increases.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#16
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This isn't me but its the same meter I have. Super reliable.
https://www.youtube.com/watch?v=nLLJ4BeTzO4
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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 |
#17
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Here it is on Amazon.
http://amzn.to/2gHftnZ I need to order one for each car now that I think about it. I have been walking these between cars as needed.
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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 |
#18
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Oh one last thing
Don't leave it fully plugged in when not in the car. It keeps running though it would take a very long time to run the battery down. I just pull the meter out a tiny bit when not in use and leave it in the cig socket. When I want to monitor voltage I just push it back in some.
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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 |
#19
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Quote:
What else can I test without the voltmetre? EG can I remove fuses and see if it helps?. Anything I should check/tighten? Should I unplug the negative cable of the battery while I'm not fixing the car to maintain the battery?
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02' X5 E53 3.0i Petrol (210k km/130k miles) Will trade coding skills (Javascript, React, Node, Django, Mobile dev) for car knowledge ODB II: ELM 327 (Torque Pro app) |
#20
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Quote:
What does that mean?
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02' X5 E53 3.0i Petrol (210k km/130k miles) Will trade coding skills (Javascript, React, Node, Django, Mobile dev) for car knowledge ODB II: ELM 327 (Torque Pro app) |
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