2022 VW 150PS DSG T30 Hillside. Apologies for long post, in advance!
I had the dash warning of oil overfill a couple of weeks ago after covering about 100 miles journey. Within a half hour of receiving the warning my specified VW service centre telephoned me to say they had been notified of the oil warning. It was booked in for inspection, later that same week. I was quite impressed that the issue had been reported to my service centre, automatically. The dash warning is cancelled after opening the bonnet, until another <100> miles is completed, then it pops up again on the dash.
Meanwhile, I did a bit of research online and discovered various threads and videos about the same issues. The general consensus being to fill only to a halfway point up the dipstick hashed area, to allow for expansion. To also check that all updates had been installed regarding the oil warning/oil levels overfill.
I visited the service centre and discussed at length, the issue. Service centre were really helpful. We decided that as the next oil change service was due in a couple months, to carry out the service a bit early, thus replacing the oil and filter with new, to eliminate the possible oil dilution with diesel fuel during regeneration (I was told that VW would not cover the cost of oil replacement). I also requested the service centre to fill only halfway up the hashed area of the dipstick, which they did. I bought a litre bottle of the correct oil and placed the bottle in the door pocket, to use in case I needed it. This seemed to be in line with what I had read and had been advised online. I intended to check the oil cold and hot, more frequently.
(Regarding DPF regeneration, it is a shame that there is no visible warning of it actually taking place, although this is being addressed by VW on newer models in time, apparently).
The service was completed and I naturally assumed the problem had been resolved. No such luck I am afraid! Same warning appeared yesterday after a <70> mile run. The van is booked in later this week for investigation. The garage assured me that all necessary updates had been completed, the service had been completed as specified. They will be investigating with VW technical services what is happening/how to resolve the issue.
I have done all I can do, it is now down to VW to sort..... will update this post later, after the inspection on Thursday of this week, though I will have to complete another few miles to see if the issue pops up again!
Regards, J.
Edit...
Further to my post above, the van went in today (Thursday 7th March 2024) to be inspected and the Oil Overfill issue (hopefully) resolved. VW Technical Services advised the service centre to fully drain all oil out of the engine and turn on the ignition for a half hour. Then, refill the oil and this will have hopefully reset the oil level. Additionally the van was checked as having all necessary software updates installed..... They had been.
Time will tell if the fix has been successful..... another 100 or so miles, without opening the bonnet, should be the test.