I have done some testing on my "nov 2017 build" S 75D with PUP, here are my observations.
Cornering Lights:
When the car is in drive and you start turning the wheel, the "cornering LEDs" light up in the following order A1 -A2 - A3 - Fog Light*
The LEDs are gradually illuminating, not just 4 separate steps. This is possible both with Low-beam and High-beam.
When returning the wheel to centre position the "cornering LEDs" are gradually dimming, in the order A3 - Fog Light - A2 - A1*
*
Headlight LED labeling
Model S Owners Maunal
When low beam headlights are turned on and when driving at lower speeds, AFS improves lateral illumination to increase the visibility of pedestrians and curbs, and to improve visibility when turning at a dark intersection, into a driveway, or when making a u-turn.
Based on my observations the corneing light functioning according to the description on the Tesla Webpage and the Model S Owners manual.
Lateral illumination meaning "sideways" or "from the side" is exactly what the cornering part of the Adaptive Front Lighting System.
The only dfference I found is the cornering light is working with both low and high beam on, but Owners manual only stating low beam.
Automatically adjusts beam of headlights:
During my testing on a winding road without streetlights, I have not been able to observe any automatically adjustment of the light beam (both low and high beam has been tested) According to the manual the lightbeam should be cast to the direction of the curve based on velocity, steering input and rotation of the vehicle.
Model S Owners Maunal
The Adaptive Front Lighting System (AFS) automatically adjusts the beam of the headlights to improve your driving view. Electric sensors measure driving speed, steering angle and yaw (the rotation of the car around the vertical axis) to determine the optimum position of the headlights based on current driving conditions. For example, to improve visibility while driving on winding roads at night, the AFS casts the beam in the direction of the curve.
Based on my observations the "Automatically adjust beam of headlights" is not functioning while driving on curved/winding roads at speed. The effect of lightbeam is not present or so minicule that I'm not able to observe the effect of the beam turning.
-Does anyone have other experiences with the AFS function that differ with mine?
-Am I missing some hardware or software for the automatic turning of the beam? (Adaptive Headlights is on in my settings)
-If "Cornering lights" is the only function og the AFS, the
Owners Maual Page 52 and
Tesla Webpage is straigh out lying, as they are describing two different functions of AFS, one for lareral lighting in corneing and one for turning the beam into curves.