Do i get an award for most number if alerts upon startup?

 

That’s incredible.

 

Put a multimeter on the 12v battery. It's likely going to be in a state of discharge.

 

"Loose wheel warning"? I assume you don't actually have a wheel hanging off? Kinda terrifying it will so confidently give such a clearly wrong message....

 

Audi probably added that one after Tesla had that problem with the steering wheels coming off.

 

You can see this in almost any EV if the 12v gets low - all the modules don’t get enough power so they throw random errrors. But you definitely get some kind of prize! And loose wheel is a pretty funny one …

 

In our case, the 12V batter did not show that it was low or in a state of discharge. It took them 35 days and multiple calls with Audi Engineering to diagnose the issue is due to a faulty BCM.

 

Wait until you get the “Oil Change Due - See Workshop” warning. Q6 and Q5 share the same architecture and hardware.

 

@rudy, the 12V battery powers the warning lights, all the 12V components, and the HVB. So, when the 12V battery is low, you get the Xmas tree lights.

The picture shows that the HVB is charging the 12V, which reduces the vehicle's range.

Get the following or equivalent

12V battery monitoring system

https://www.amazon.ca/ANCEL-BM200-Bluetooth-Automotive-Lead-Acid/dp/B0BZ8D71NY/

Noco charger/maintainer. Charge the 12V battery regularly in the garage to maintain its optimal performance.

A battery booster, for emergencies. If you had one of these, you could have pulled over and charged the 12V battery in situ.

NOCO | Jump Starters, Chargers, Batteries & Inflators

no.co

All the best

 

If it turns out to be the battery I hope the original poster ascertains why the battery is not charging. Either a battery needs replacement or the charging systems needs looking at. In any event make sure to get this corrected.

 

The OP has the MY24-25 Q6. So, at least a one-year-old 12V battery. Unless the battery was at the point of no return, DOD condition, then it's dead. However, in that picture, it shows that the HVB is charging the battery, so there's hope the battery isn't dead.

 

It says it’s charging but we really can’t determine if that’s true unless you measure the current flow being presented to charge the battery. It could be a few things. Battery failure so it won’t hold a charge, charging circuitry problems, or some huge drain on the system.