angrypengu

All I can confirm is the data points found on AW which is for US and Canada. Right now the recall is limited to MY 2019 and 2020 and the prevailing theory is b/c Audi wants to swap out the oldest BSG's first as these have the highest probability of failures. Also based on other data points, it appears to be a VIN by VIN specific recall b/c Audi probably doesn't want everyone to hit the dealer at the same time as BSG supply is still constrained. An educated guess is they probably are starting with the A8 first and then going down the model range to cheaper cars but that's just based on what I have read here and not based on any sort of fact.

DallasDave

Is there any early warning signs of a BSG failure? I notice a strange sound when idling. It's not very loud, but certainly something I can here without having to open the hood. It sounds like a bearing that's nearing its end of life.

Torque450

I don't know,but could this be related to the BSG tensioner and belt replacement thread from a couple of days ago?

angrypengu

No

MorganMay

My letter from Audi came today. "Emissions Service Action 27BQ - Starter-Alternator" is what they are calling the free replacement of the BSG for my 2020 A8 60 that was delivered to me on New Year's Eve 2019.

There must be some angle leading to a positive return that Audi gets for calling this an "in cooperation with the US EPA and CARB" emission service action.

But I'll take it.

By the way, after four and one-half years, this A8 continues to work flawlessly (since they updated software on the adaptive cruise control so that it always works). I will keep it "til death do us part.

zhangjeffrey1

Mine showed the same sign about one and a half months ago and yesterday the BSG failed, luckily enough mine was one of the first ones here in the US to receive the recall so they can perform the software upgrade as well. I will check again if the strange idling sound will be gone after they get this fix and post the update here.

angrypengu

It's not the bearing that goes. It's the circuitry/circuit board that gets fried presumably due to condensation. There is no warning sign for the famous BSG failure but I'm also not stating that you didn't hear a funny sound. It's a post hoc ergo propter hoc thing.

2019A6Owner

What does the software update change or include?

angrypengu

The only stated comments from Audi going from 523? (whatever my car came with originally) to 527 is an increased timeframe from notification of BSG failure to car being dead. There are no other comments published otherwise so it's anyone's guess.

pcc125

Can you please post a copy of the letter you received from Audi? Thank you!