Tesla MODEL S 2012 Owner's Manual page 28

Seat Belts
WARNING: Do not make modifications that can
interfere with the operation of a seat belt, or that
can cause a seat belt to become inoperable.
WARNING: Do not use after market comfort and
convenience products that attach to the seat belts.
WARNING: When seat belts are not in use, they
should be fully retracted and not hanging loose. If
a seat belt does not fully retract, contact Tesla.
WARNING: The seat belt system has no user
serviceable parts and may contain pyrotechnics.
Do not disassemble, remove, or replace
components.
26 MODEL S Owner's Manual