I’m with Audi today to get the Audi presence update/fix and they have discovered this. See the lid of the coolant cap. They’ve said it just needs to be flushed and replaced. He said it’s safe to drive. Another warranty Job. its a 4-5 hour job so get it looked at to save you money in the future.
Will forum members have a look and report back.
Will forum members have a look and report back.