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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 05-06-2013, 06:01 PM
Romanianbimmer Romanianbimmer is offline
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2010 335xi not charging help!!!

Hello everybody I have a 335i xdrive and it is giving me problems. Sometimes she runs fine. But it lately hasn't wanted to start with out a jump. And now it is showing charging system malfunction. But it does not do it all the time now it doesn't want to charge at all the car just faded out and died. I do not know what it could be. Please help!!
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Old 05-06-2013, 06:10 PM
TXFred TXFred is offline
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It's the alternator or the battery.





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Old 05-06-2013, 09:08 PM
Romanianbimmer Romanianbimmer is offline
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I had the alternator checked and they said it was pushing 14.4 amperes. But the alternator was still on the car and still could not make it sure.

Last edited by Romanianbimmer; 05-06-2013 at 10:10 PM.
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Old 05-07-2013, 06:12 AM
TXFred TXFred is offline
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So if it's not the alternator, then it must be ______?

A. The battery.
B. Demons inside the car.
C. The battery.
D. The battery.

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Old 05-07-2013, 08:42 AM
Romanianbimmer Romanianbimmer is offline
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But isn't there a sensor in the car that controls the voltage to the battery? It started happening after I put tried to charge the battery from the front mounts and the charger did not show voltage.
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Old 05-07-2013, 10:12 AM
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Zooks527 Zooks527 is online now
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Quote:
Originally Posted by Romanianbimmer View Post
I had the alternator checked and they said it was pushing 14.4 amperes. But the alternator was still on the car and still could not make it sure.
Are you sure they didn't say 14.4 volts? The alternator is capable of pushing something north of 150 amps, but low teens may be appropriate for the ECU trying to charge a fully discharged battery (say, 1/10 rate for an 80aH battery, plus other car electrical loads). Still, off the top of my head, I'd expect more than 14 on a running car with a dead battery.


Quote:
Originally Posted by Romanianbimmer View Post
But isn't there a sensor in the car that controls the voltage to the battery? It started happening after I put tried to charge the battery from the front mounts and the charger did not show voltage.
If you have a dead cell in the battery, it doesn't really matter what voltage you feed it, it still won't come up.


So, with the engine running, what voltage do you see between the jumping terminal under the hood and a ground?
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Prior 33 years of cars: 1967 BelAir wagon / 1968 LeMans Tempest / 1970 Mustang Mach 1 / 1972 El Dorado / 1978 Corvette (kept until first Bronco) / 1981 Subaru GL wagon AWD / 1983 s10 Blazer 4x4 (big mistake) / 1985 Bronco 4x4 / 1996 Bronco 4x4 / 2004 Passat 4motion

Last edited by Zooks527; 05-07-2013 at 10:29 AM.
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Old 05-08-2013, 10:53 AM
Romanianbimmer Romanianbimmer is offline
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As it turns out the battery that was in the car is just a conventional lead acid battery. I think that is the problem.

Last edited by Romanianbimmer; 05-08-2013 at 09:07 PM.
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