Step up and buy a Bosch. Yes, they do fail, but the odds are much less.
Had the same issue with a reman denso alternator that went in a Honda, it was the cheap diode/rectifier pack that was fitted that was causing the bat light to stay on.
Bosch is still the gold standard but not what it used to be. Don't buy cheap junk.
you can go on rockauto.com and should be able to purchase an OEM Denso Alternator.
If you are going to get a new or remanufactured alternator spend the $$$ for a DENSO one.
Stick with a high quality oem replacement alternator; VW installed a number alternator oem brands (bosch, Valeo, Hitachi, etc). My 2002 New Beetle Turbo S; had a Valeo 120 Amp unit installed, I had a hard time finding a Valeo unit, so I went with Bosch and so far, I have not any issues with it but the body of the alternator, was slightly bigger, so the wiring harness, was a bit of a tight fit.
As some others have said, make sure you only get the remanufactured Denso alternator. No other alternator seems to work.
I replaced the alternator on my 2012 Odyssey the day before yesterday. Rebuilt Denso (I saw several suggestions online to -not- stray from Denso for this vehicle). was\\~$250 at Napa, after I got my core deposit back.
Bosch rebuilt alternators are like $175 online. Lots of people experienced low quality rebuilts. Have people had good luck with Bosch rebuilts?
I figured alternator, so took it to Autozone to scan and everything passed. Then took it to Meineke for them to check and they told me alternator was bad and replaced it. Well my interior lights were still flickering so I took it back and they say seems like the one they installed was defective, so they replace it again with an OEM Bosch and also print me a printout of a bulletin stating that under load lights may flicker and there is no solution.
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