What sensitivity setting do you use? Does your car have two settings like the refresh cars?
From the manual:
"To wipe the windshield, rotate the end of the left-hand steering column lever away from you. You can choose from four levels: • 1st: Auto with low rain sensitivity.* • 2nd: Auto with high rain sensitivity.* • 3rd: Continuous, slow. • 4th: Continuous, fast."
"*Model S has a rain sensor located on the inside of the windshield at the base of the interior mirror. When wipers are set to Auto, the frequency at which they wipe depends on how much water the sensor detects. When wipers are set to the 2nd level, the sensor is more sensitive."
Btw, with 17.24.28, a single wipe (by push on the button) does not seem to turn on headlights anymore.