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  #1  
Old 06-07-2015, 11:29 AM
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My X6 50i won't start

As said, my X6 50i is won't start. The starter wows for about one second and the engine won't start. I was pretty sure that the issue was a drained battery, and I recharged it. After 1h recharging, the battery recharger says that now the battery is full. Unfortunately my car still won't start. There are no error codes visible. Does anyone have any clue what might cause the problem? (Battery/Fuel pump/Alternator)?
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  #2  
Old 06-07-2015, 12:38 PM
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It may be a power supply to the DME or fuel pump or fuel pump itself.
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Old 06-07-2015, 12:51 PM
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Old 06-07-2015, 02:10 PM
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An update: finally my car started, and ran smoothly. I drove for about one hour and everything worked fine. Then after stopping the car, it did not start anymore. I guess then the problem might be in the starter, or something weird with the battery. Does anyone know if the battery capacity goes very low, that it somehow damages it (that it won't charge well anymore)?
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Old 06-07-2015, 04:47 PM
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How old is the battery?

For your charger to call it full after only an hour of charging suggests that one of the devices, the charger or the battery is malfunctioning.

An absorbed glass mat - AGM - battery is damaged permanently by too high charging voltage and too high charging current caused by the too high voltage. Amperes = Voltage divided by Resistance (in this case the internal resistance of the battery).

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Old 06-07-2015, 08:32 PM
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Quote:
Originally Posted by Doug Huffman View Post
How old is the battery?

For your charger to call it full after only an hour of charging suggests that one of the devices, the charger or the battery is malfunctioning.

An absorbed glass mat - AGM - battery is damaged permanently by too high charging voltage and too high charging current caused by the too high voltage. Amperes = Voltage divided by Resistance (in this case the internal resistance of the battery).

onnentoivotukset
A battery which is 4 years or more old is very suspect. And you can't just buy another battery from the auto parts.store and have that work for more.than a few months? Batteries mms just be correct.type and they must be introduced configured to.the car. Bmw will charge you 400+ for this.
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Old 06-07-2015, 08:44 PM
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Quote:
Originally Posted by Ron07x5 View Post
And you can't just buy another battery from the auto parts.store and have that work for more.than a few months? Batteries mms just be correct.type and they must be introduced configured to.the car. Bmw will charge you 400+ for this.
Could you please stop with this misinformation If you believe in what BMW rep told you it is your choice, but please do not make other people pay for nothing. There are many ways to register a new battery and even if you dont do it you will shorten it's life with a few percent, if any, not a few times.
I for one, am too lazy to register a new battery in one of my cars, but that doesnt lead to any imminent death of my car or battery.
BTW, I like your style with commas in the middle of the sentence, but it is hard to read sometimes
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Old 06-07-2015, 10:49 PM
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I have not heard anything from a bmw rep would not believe them. I have read about batteries need to be introduced to the car. Have seen in my cars service records how prior owner installed an aftermarket battery seeking to avoid a $450 bil but didn't introduce it. He did not know to do that or have the means to do that. Then months later his transmission will not go out of park or worse. He takes to bmw service and they charge $100 for diagnosing the transmission and report finding nothing wrong with it. They report the problem is a incorrect aftermarket battery and then install another bmw battery. Total cost about $600.

So I was warning him, I am saying you either pay the money to bmw or you must buy a correct battery and also have the right software to introduce it.
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Old 06-08-2015, 01:10 AM
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We have seen even more of that stealership bull$$it. As I mentioned somewhere before stealerships are not in the business of fixing cars, but in the business of making money.
There are parts and consumables that you want to have original and others that you can substitute. I am curious to hear a logical or scientific explanation what would be the reason for interstate or optima battery to cause a fault in the transmission WHICH DOESNT NEED REPAIR. I will tell you right away-just a random code, which may have been caused by original or aftermarket battery, or may not, which was cleared for the total of $600. I dont have any doubts that there a re greedier dealerships out there that would have added another couple of thousands to the bill for a transmission code.
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Old 06-08-2015, 08:15 PM
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Blame the bmw engineers .... they have electronics that with lower voltage gets flaky. It is fact the prior owner of my x5 replaced a battery and didn't know how it needed to be done. Then within months he has a transmission which h he can't take out.of park or like that. Of course he does not think it is voltage and battery he thinks it a transmission problem. I won u 'd have too! But bmw tests transmission and concludes it.is good. Now if they wanted bmw could have raped him for a transmission. But instead they find the wrong type.of battery and I bet he is then somewhat happy to pay only $600.versus for a transmission.
Fact low batteries and wrong introduction can cause flaky stuff. I will be changing the battery carefully and early so I need not experience flaky stuff
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