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Hi the low pressure problem, the only way to check is to get it scanned and check the oil pressure on live data, if its the oil can in red on the dash then you have a problem as it could need a new oil pump, worse case, or the strainer on the pump will have to be cleaned, but either way its a sump off job, replacing the PCV may well cure your problem with the smoke but I would be inclined to get the injection checked first along with the EGR function as I am not sure which engine you have but all the later models had the PCV built in to the rocker cover which will mean a new cover. Steve.

Audi parts dept do not have a part number for the 2026 top cover as they are not made. If you have open threaded holes in your engine rocker cover that match the earlier 35tfsi then you can get a top cover from the earlier model. You will need to get the mounting pins as well.

Nevertheless the car needs to be scanned on a decent code reader as Steve suggested. Warning lights on the dash are not enough to diagnose faults.

It’s shocking that an Audi dealer can’t find the time to address a potentially dangerous issue on a 5-week-old car. I would imagine it didn’t take them that long to take your money. Anyway, glad to hear you have a tech on the case who seems to know what he’s doing. Good luck.

William, they used the 2nd fuseway up on the left side on mine.

I paid Halfords to do mine then had to rewire it myself as they got it wrong by connecting the switched live and constant live wires both to constant live. This meant the parking mode did not kick in as the unit did not sense power off. Be aware when testing for switched live these circuits do not power down straight away. I used the fuse box in the footwell near side not the higher panel, this picture should sort for you.

For anyone reading this and having issues finding a fuse that goes off with the ignition, you have to switch the ignition off and wait around 2 to 3 minutes before you test any fuses. For me it ended up being an empty slot the top row in the passenger footwell. 2019 Audi A6 S-line, Tech-pack Mini tap fuse. Note, I tried a few before I found out the information one of which caused a lot of error codes on the dash... fine now though.