S4 (B6 & B7 Platforms) Discussion Discussion forum for the B6 Audi S4 produced from 2003-2005 And B7 Audi S4 produced from 2005 -2008

Inconsistent charging system

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Old Aug 16, 2004 | 09:05 PM
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Default Inconsistent charging system

So far, after a week of driving the S4, im an Audi-convert, coming from owning a BMW E46 M3. However, noticing a few quirks. Small things, but makes me wonder a bit.

In the M3, not matter what, voltage remained a consistent 13.8v, all the way through the power band, and driving conditions. Ive noticed over the week that the Audi fluctuates between 13.1 and 13.9 during different driving conditions.

Is this condisered normal, and the BMW just had a hell of a buffer on the electronics, or is there something I need checked.
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Old Aug 16, 2004 | 09:48 PM
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just curious, where do you see the voltage in the S4? or did you use an external voltmeter?
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Old Aug 17, 2004 | 08:58 AM
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Default Re: just curious, where do you see the voltage in the S4? or did you use an external voltmeter?

saw it on my radar detector, and confirmed with a multimeter at a few places in the car.
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