Tesla S Owner's Manual page 166

Software Updates
If the touchscreen displays a message
indicating that a software update was not
successfully completed, contact Tesla.
Charging
If Model S is charging when the software
update begins, charging stops. Charging
resumes automatically when the software
update is complete. If you are driving Model S
at the scheduled update time, the update is
canceled and must be rescheduled.
Viewing Release Notes
When a software update is complete, read the
release notes displayed on the touchscreen to
learn about changes or new features. To
display release notes about the current
version of your vehicle's software at any time,
touch the Tesla "T" at the top center of the
touchscreen, then touch Release Notes. You
can also view the release notes by touching
Controls > Software.
Tesla strongly recommends reading all release
notes. They may contain important safety
information or operating instructions for your
Model S.
164 MODEL S OWNER'S MANUAL