Tesla Model 3 Owner's Manual page 67

Note: Auto Lane Change moves Model 3 one
lane at a time. Moving into an additional lane
requires you to engage the turn signal a
second time after the first lane change is
complete.
Warning: If Auto Lane Change cannot
detect the outside of the target lane
midway through the lane change, both
Auto Lane Change and Autosteer will
cancel. The touchscreen displays a
message instructing you to take over the
steering wheel immediately.
When Auto Lane Change is active, it is
important to monitor its performance by
watching the driving path in front of you and
the surrounding area. Stay prepared to take
over steering at any time. On the touchscreen,
the lane line you are crossing over displays as
a dashed blue line and once in your new lane,
the lane markings display as solid blue lines.
In situations where Auto Lane Change is
unable to operate at optimal performance, or
cannot operate due to inadequate data, the
touchscreen displays a series of warnings.
Therefore, when using Auto Lane Change,
always pay attention to the touchscreen and
be prepared to manually steer Model 3.
Warning: When Auto Lane Change is
actively steering Model 3, the steering
wheel moves accordingly. Any significant
restriction of or force on the steering
wheel's movement can cancel both Auto
Lane Change and Autosteer.
Canceling Auto Lane Change
Auto Lane Change cancels when you manually
move the steering wheel, press the brake
pedal, or disengage the turn indicator before
Model 3 crosses the markers on the existing
lane.
To disable Auto Lane Change so it is no longer
available, touch Controls > Autopilot > Auto
Lane Change > OFF.
Limitations
Auto Lane Change is particularly unlikely to
operate as intended in the following types of
situations:
Driver Assistance
Auto Lane Change
• Auto Lane Change is unable to accurately
determine lane markings. For example,
lane markings are excessively worn, have
been adjusted due to road construction,
are changing quickly (lanes branching off,
crossing over, or merging), objects or
landscape features are casting strong
shadows on the lane markings, or the road
surface contains pavement seams or other
high-contrast lines.
• A vehicle is detected in your blind spot
when you engage the turn signal.
• The road has sharp curves.
• Visibility is poor (due to heavy rain, snow,
fog, etc.) or weather conditions are
interfering with sensor operation.
• Bright light (oncoming headlights or
direct sunlight) is interfering with the view
of the camera(s).
• A sensor or camera is damaged or
obstructed (such as by mud, fog, ice,
snow, etc.).
• The sensors are affected by other
electrical equipment or devices that
generate ultrasonic waves.
• Model 3 is being driven very close to a
vehicle in front of it, which is blocking the
view of the camera(s).
Warning: Many unforeseen circumstances
can impair the operation of Auto Lane
Change. Always keep this in mind and
remember that as a result, Auto Lane
Change may not steer Model 3
appropriately. Always drive attentively
and stay prepared to immediately take
action at any time.
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