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Old 09-09-2020, 10:01 PM   #20
17rsvert
 
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Drives: 2017 HBM 2LT RS Convertible V6 A8
Join Date: Jan 2018
Location: NJ
Posts: 654
Quote:
Originally Posted by ember1205 View Post

- The erratic behavior of the various electronics. Yesterday, my car decided that it was only going to output about 12.6V from the alternator instead of the typical almost 14V....
I thought something was wrong with my car also until I read up on it.

That's not erratic behavior, you are probably just used to older charging systems where the alternator's output is always full blast and a voltage regulator controls it down to about a constant 14V. Your car has a smart charging system that adjusts the voltage depending on demand, that's why you'll see it down below 13V sometimes. I think it's supposed to prevent battery overcharging and save fuel.
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