I have a 2009 XF luxury model and on the third automatic shift there is a slight surge in the shift. You can hear it and dealer said they did some reprograming for the shift module and I still have that little surge. Not a big problem but like it to be gone. Any thoughts

Also have a whinning sound when accelerating and going through the auto shift. AS you accelerate there is a slight whinning / humming sound and it seems to end after 4th shift or I just do not hear it then. It seems more prevalent on hot days but is not always present only on occassions and the dealer mechanic went for a test drive with me and as usual we could not detect a very definite whine that day...I am concerned that this could turn into something much worse over time. I only have 50,000 klms