4. To change your speed while using Trac-Aware
Cruise Control, you can roll the right scroll wheel on
the steering wheel up or down. For more details, see
Changing the Cruising Speed on page 102.
5. To cancel Trac-Aware Cruise Control, press the right
scroll wheel, or press the brake pedal. See
Canceling
and Resuming on page 104 for more information.
Set Trac-Aware Cruise Control
Chime
If you want a chime to sound when you engage or
cancel
Trac-Aware Cruise Control, touch Controls >
Autopilot > Trac-Aware Cruise Control Chime.
NOTE: Model X must be in Park.
Changing the Cruising Speed
Roll the right scroll wheel up to increase, or down to
decrease, the set speed. Slowly rolling the scroll wheel
changes the set speed in 1 mph (1 km/h) increments and
quickly rolling the scroll wheel changes the set speed to
the closest 5 mph (5 km/h) increment. For example, if
you are traveling at 57 mph and quickly roll the scroll
wheel, the speed increases to
60 mph.
NOTE: It may take a few seconds for Model X to reach
the new cruising speed, assuming Model X is not
cruising behind a vehicle that is driving slower than your
set speed.
Cruising at the Set Speed
Trac-Aware Cruise Control maintains your set cruising
speed whenever a vehicle is not detected in front of
Model X. When cruising behind a detected vehicle,
Trac-Aware Cruise Control accelerates and decelerates
Model X as needed to maintain a chosen following
distance (see Adjust the Following Distance on page
103), up to the set speed.
Trac-Aware Cruise Control also adjusts the cruising
speed when entering and exiting curves.
You can manually accelerate at any time when cruising
at a set speed, but when you release the accelerator,
Trac-Aware Cruise Control resumes cruising at the set
speed.
NOTE: When Trac-Aware Cruise Control is actively
slowing down
Model X to maintain the selected distance
from the vehicle ahead, brake lights turn on to alert
other road users that you are slowing down. You may
notice slight movement of the brake pedal. However,
when
Trac-Aware Cruise Control is accelerating
Model X, the accelerator pedal does not move.
WARNING: Trac-Aware Cruise Control may
occasionally cause Model X to brake when not
required or when you are not expecting it. This can
be caused by closely following a vehicle ahead,
detecting vehicles or objects in adjacent lanes
(especially on curves), etc.
WARNING: Due to limitations inherent in the
onboard GPS (Global Positioning System), you
may experience situations in which Model X slows
down, especially near exits or o-ramps where a
curve is detected and/or you are navigating to a
destination and not following the route.
WARNING: Trac-Aware Cruise Control may not
detect all objects and, especially when cruising
over 50 mph (80 km/h), may not brake/decelerate
when a vehicle or object is only partially in the
driving lane or when a vehicle you are following
moves out of your driving path and a stationary or
slow-moving vehicle or object is in front of you.
Always pay attention to the road ahead and stay
prepared to take immediate corrective action.
Depending on Trac-Aware Cruise Control to
avoid a collision can result in serious injury or
death. In addition, Trac-Aware Cruise Control
may react to vehicles or objects that either do not
exist, or are not in your lane of travel, causing
Model X to slow down unnecessarily or
inappropriately.
WARNING: Trac-Aware Cruise Control may be
unable to provide adequate speed control because
of limited braking capability and hills. It can also
misjudge the distance from a vehicle ahead.
Driving downhill can increase driving speed,
causing Model X to exceed your set speed (and
potentially the road's speed limit). Never depend
on Trac-Aware Cruise Control to slow down
Model X enough to prevent a collision. Always
keep your eyes on the road when driving and be
prepared to take corrective action as needed.
Depending on Trac-Aware Cruise Control to
reduce your driving speed enough to prevent a
collision can result in serious injury or death.
Trac-Aware Cruise Control
102 MODEL X Owner's Manual
