Yes, summon, autopark and auto lane change are included in enhanced auto pilot, which I believe is no longer available for separate purchase. I have enhance auto pilot and use all of those features; I bought it as an option in 2018. But they are not included in basic auto pilot.
A bit of semantics. There are 3 packages you will see mentioned: Basic AutoPilot
Traffic Aware Cruise Control
Auto steer on highways
Auto lane changing
Full Self Driving
Navigate on AutoPilot
Auto lane change
Traffic light & stop sigh control
All cars come FSD capability and Basic AutoPIlot. If you look at the system page will say something to that effect. Up until a few years ago Tesla sold an Enhanced AutoPilot package. As you can see above, those features were absorbed into the FSD package and EAP can no longer be purchased separately. The FSD package can be purchased either when you order your car from Tesla, or as an add-on separately later on. If you have purchased the FSD package, the system screen in the car will say “FSD Capability Included package” on the system screen. ***if you are buying a used Tesla, don’t confuse the verbiage “FSD Capability” to mean it is installed!***
The one disadvantage of getting FSD at a later date is that Tesla may remove it if you trade the car in through Tesla.