Hyundai Elantra N Owner's Manual page 73

Seats & Safety System
WARNING
Riding in an improper position or placing weight on the front passenger's seat when
it is unoccupied by a passenger adversely affects the OCS. To reduce the risk of
serious injury or death:
OVQ036013NB
OLMB033100
OLMB033101
OLMB033103
OLMB033102
3-44
NEVER put a heavy load in the front seat or seatback
pocket, or hang any items on the front passenger
seat.
NEVER place your feet on the front passenger
seatback.
NEVER sit with your hips shifted towards the front of
the seat.
NEVER ride with the seatback reclined when the
vehicle is moving.
NEVER place your feet or legs on the dashboard.