In most cases, Autosteer attempts to center
Model S in the driving lane. However, if the
sensors detect the presence of an obstacle
(such as a vehicle or guard rail), Autosteer
may steer Model S in a driving path that is
oset from the center of the lane.
Warning: Autosteer is not designed to,
and will not, steer Model S around objects
partially or completely in the driving lane.
Always watch the road in front of you and
stay prepared to take appropriate action.
It is the driver's responsibility to be in
control of Model S at all times.
Restricted Speed
Autosteer is intended for use only by a fully
attentive driver on freeways and highways
where access is limited by entry and exit
ramps. If you choose to use Autosteer on
residential roads, a road without a center
divider, or a road where access is not limited,
Autosteer may limit the maximum allowed
cruising speed. The maximum allowed cruising
speed on such roads is calculated based on
the detected speed limit including a Speed
Assist
oset of up to +5 mph (10 km/h). Any
Speed Assist
oset above +5 mph (10 km/h) is
rounded down to +5 mph (10 km/h). However,
you can select a more restrictive cruising
speed by reducing the speed limit oset (see
Controlling Speed Assist on page 97) or by
adjusting the cruise control lever.
In situations where the speed limit cannot be
detected when Autosteer is engaged,
Autosteer reduces your driving speed and
limits the set speed to 45 mph (70 km/h).
Although you can manually accelerate to
exceed the limited speed, Model S may not
brake for detected obstacles. Autosteer will
slow down to the limited speed when you
release the accelerator pedal. When you leave
the road, or disengage Autosteer by using the
steering wheel, you can increase your set
speed again, if desired.
Hold Steering Wheel
Autosteer uses data from the camera(s),
sensors, and GPS to determine how best to
steer Model S. When active, Autosteer requires
you to hold the steering wheel. If it does not
detect your hands on the steering wheel for a
period of time, a
flashing white light appears
around the instrument panel and the following
message displays:
Autosteer detects your hands by recognizing
light resistance as the steering wheel turns, or
from you manually turning the steering wheel
very lightly (i.e., without enough force to
retake control). When your hands are
detected, the message disappears and
Autosteer resumes normal operation.
Note: Autosteer may also sound a chime at
the same time that the message is initially
displayed.
Autosteer requires that you pay attention to
your surroundings and remain prepared to
take control at any time. If Autosteer still does
not detect your hands on the steering wheel,
the request escalates by sounding chimes that
increase in frequency.
If you repeatedly ignore hands-on prompts,
Autosteer displays the following message and
is disabled for the rest of the drive. If you
don't resume manual steering, Autosteer
sounds a continuous chime, turns on the
warning
flashers, and slows the vehicle to a
complete stop.
For the rest of the drive, you must steer
manually. Autosteer is available again after
you stop and shift the vehicle into Park.
Take Over Immediately
In situations where Autosteer is unable to
steer Model S, Autosteer sounds a warning
chime and displays the following message on
the instrument panel:
When you see this message, TAKE OVER
STEERING IMMEDIATELY.
Canceling Autosteer
Autosteer cancels when:
• You start steering manually.
• You press the brake pedal.
Autosteer
Driver Assistance 83
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