My s10e struggled to connect with my 911.
The thing is that in most VW group cars at least, the phone wont connect to the car if the car is the one who is "initiating the bond".
Try to connect to the car from phone to car. Because turning on the BT on my Samsung s10 and then asking my car to find it doesnt work (yeah I turned the discoverability ON). The other way works for me.