Alternator OEM Audi or OEM Volkswagen

The alternator was dead (as expected), and was replaced with a used one that I sourced locally from junkyard.

The high rev voltage must be over 14 volts, so if not, then its the alternator. But make sure all connections clean and greased.

Eurovan exhibited similar behavior. Start and run fine until.... engine would lose power. Pull over and would die. Restart would be nothing. Sit for an hour or so and could restart and could get the few miles to home. Next day things could be normal or a repeat of slow down and die. This went on for a couple of weeks. The last fail found the battery to be toast even though only a year old. OK, so new battery. All good for the next few days then the gremlins return. New battery is now no good. Determined the alternator had developed enough play that when warm would start to short creating more heat and more of a short allowing it to eat the battery. New alternator and another new battery and all is and has been good.

At 48K miles I experienced an alternator fail (car was running great at the time).

I took the alternator apart as well, but it's quite worn and a new one does not cost a fortune, so it's not worth it to refurb it.

Mine has 69K miles. I've owned it for 4 years. Replaced the alternator and MAF sensor after failures. Keyless entry works only sporadically on the driver's door (lock switch already replaced - latch mechanism needs to be replaced, but for $$$).

My Q8 alternator died today. 3 year old car 36k miles on the clock. Luckily I was right next an Audi dealership with a garage when the display panel told me to stop driving and pull over safely. When the mechanics got to the car they couldn\u2019t even start it.

Mine failed at 55k a couple of weeks ago. A couple months prior to this I had complained to the dealership and showed them all the reports of this issue online... At the time they denied any knowledge of the alternator issue.

even a simple job like changing the alternator is difficult due to where they place it. There's not a ton of space to work on the car in the engine bay.

Audi really dropped the ball on building such a poor performing alternator!