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  #1  
Old 03-19-2020, 06:25 AM
jwatson jwatson is offline
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Mein Auto:
Possible Battery Issue

I'm hoping I can find the answers to this problem because it has been stumping me for a few weeks now.

Recently I have been having problems with my 2005 Z4. The first time it happened, I was leaving for work. I got in the car, turned the ignition and the car went dead. I recognized it as the battery being drained, assuming I left a light on or something. I asked a coworker for a jump (I left my power bank at home after cleaning the car out a few days before) When I open the trunk to place the jumper cables on, the car came back to life before I could put the cables on. We both thought it was weird, bit the car started back up so I figured it was a fluke. But as the days went on the problem has been more frequent. I turn the ignition, the care dies. When I go to the battery terminal, all I have to do is wiggle one of the terminals and the car will turn back on. I had the battery checked and it is fine and fully charged. I dont know what this issue could be.
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Old 03-19-2020, 06:33 AM
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Doug Huffman Doug Huffman is offline
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Location: Washington Island, Wisconsin, thru Death's Door
 
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Mein Auto: CPO2012 X5 35d M57(E70)
Loose terminal clamp?
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Old 03-19-2020, 06:37 AM
jwatson jwatson is offline
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Mein Auto:
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Originally Posted by Doug Huffman View Post
Loose terminal clamp?
Ive been wondering that myself. Ive been tightning the clamps to make sure they stay on. The positive one does slip off after a while though. It will stay tight for a while but after a while I can just easily lift it off. But I dismissed this as an issue because I can touch our wiggle either terminal and the car will pop back on.
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Old 03-19-2020, 06:41 AM
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Doug Huffman Doug Huffman is offline
Nuclear engineer
Location: Washington Island, Wisconsin, thru Death's Door
 
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Mein Auto: CPO2012 X5 35d M57(E70)
They have specified torques. Www.newtis.info
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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Old 03-19-2020, 11:05 AM
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dkl dkl is offline
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Mein Auto: E53 X5, E86 Z4MC
Most likely a faulty ignition switch - this is a common issue at the car's age.
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