Since you brought this up, I should post that in the last year, my xf has stalled twice and failed to start once. All three times it was wet out side. The stallings occur while waiting for lights in active rain and post storm wet conditions. The failure to start was after a massive storm while I was at work, car was parked in the open and and i could not get it to start at all. After about an hour it just fired up. It did not crank on any of the three occasions, turn of the key and no crank. the episode was about 6 months ago. It seems logical that its a moisture issue but not sure at all. Anyone else have similar experiences?