https://www.tesla.com/ownersmanual/model3/en_us/GUID-101D1BF...
> In addition, these features may not work as intended when: The road has sharp curves or significant changes in elevation.; Road signs and signals are unclear, ambiguous, or poorly maintained.; Visibility is poor (due to heavy rain, snow, hail, etc. or poorly lit roadways at night); You are driving in a tunnel or next to a highway divider that interferes with the view of the camera(s); Bright light (such as from oncoming headlights or direct sunlight) interferes with the view of the camera(s).
https://www.tesla.com/ownersmanual/model3/en_us/GUID-E5FF5E8...
> Full Self-Driving (Beta) and its associated functions may not operate as intended and there are numerous situations in which driver intervention may be needed. Examples include (but are not limited to): Interactions with pedestrians, bicyclists, and other road users.; Unprotected turns with high-speed cross traffic.; Multi-lane turns.; Simultaneous lane changes.; Narrow roads with oncoming cars or double-parked vehicles.; Rare objects such as trailers, ramps, cargo, open doors, etc. protruding from vehicles.; Merges onto high-traffic, high-speed roads.; Debris in the road.; Construction zones.; High curvature roads, particularly at fast driving speeds.