Found this video on the Cariad Sub reddit

What email address have you sent the complaint through to?

Probably an idea for more of us to voice our concerns

Brilliant post Sarge, please let us know how you get on. It’s easier getting blood out of a stone though than getting sense out of Audi digital regarding Q4 software.

We need to be able to escalate this issue somehow.

The dealership have advised that my car requires a new battery control unit. They said it will be off the road for at least 2 weeks.

@Mml2435 and @skpudding My Q4 Sportback 40 has also displayed this fault indication in the last couple of days. I took it into my nearest Audi dealer and they diagnosed the fault is due to a failure of one of the two battery coolant systems. Their diagnostics will not determine which one and requir...