Got the same warning... a common event apparently ... Not much to worry about here
I recently checked my oil level ..................... would the car being very slightly uphill produce this result? I was reluctant to add any oil until finding a perfectly flat spot. It was the kind of slight uphill you see at parking lots to drain water away so almost flat.
Yes, there is some variation based on the how level the ground really is. I've seen this myself. A slight grade tilts the level, as expected, since we're talking about only a fraction of an inch on the dipstick.
I also got the "Check Oil Level" message recently on my '19 Tiguan too. Sure enough, the sensor noticed the level was about at the lower line on the dipstick.
That is nice the thing will warn us!
Since there was never a loss of oil pressure, then no problem, really, getting the "oil level" yellow warning.
If the oil level gets even lower, there is a separate "Low Oil Level" warning you'd see, as another layer of warning when it gets a little worse than our situation in this thread. Still, as long as the oil pressure red light does NOT come on, your engine is NOT getting damaged. Worst case with the 2 levels of yellow warning is that the oil gets a little too hot at times, but that probably isn't a big deal if using the VW 508 specification synthetic oil.
In my case, I changed my own oil and put in about 5 quarts in (really takes 6 quarts max!) since I had a 5-quart jug to use, knowing I'd top it off in a few days when I had a chance to buy the extra quart later. Since the oil pickup tube reaches low into the sump, 5 quarts is plenty. Not long term though. Try to get the level somewhere in the cross-hatched region of the dipstick, preferable toward the middle, and never too full of course.