2017 TESLA MODEL S sensor

Note: Autosteer is a BETA feature.
If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 65), and you have purchased the optional Autopilot Tech Package, you can use
Autosteer to manage steering and speed under certain circumstances. Autosteer builds
upon
Traffic-Aware Cruise Control, intelligently
keeping Model S in its driving lane when
cruising at a set speed. Using the forward
looking camera, the radar sensor, and the ultrasonic sensors, Autosteer detects lanemarkings and the presence of vehicles and
objects, steering Model S based on the lane
markings and the vehicle directly in front of
you.
Warning: Autosteer is a hands-on feature.
You must keep your hands on the steering
wheel at all times.Warning: Autosteer is intended for use
only on highways and limited-access
roads with a fully attentive driver. When using Autosteer, hold the steering wheel
and be mindful of road conditions and
surrounding
traffic. Do not use Autosteer
on city streets, in construction zones, or
in areas where bicyclists or pedestrians
may be present. Never depend on
Autosteer to determine an appropriate driving path. Always be prepared to take
immediate action. Failure to follow these instructions could cause serious property
damage, injury or death.
Operating Autosteer
Before you can operate Autosteer, you must
enable it by touching Controls > Settings >
Driver Assistance > Autosteer > Enable.
To indicate that Autosteer is available (but not actively steering Model S), the instrument
panel displays a gray Autosteer icon on the right side of the driving speed as shown here:
To initiate Autosteer, pull the cruise control
lever toward you twice in quick succession. Autosteer
briefly displays a message on the
instrument panel reminding you to pay
attention to the road and be ready to take
over at any time. To indicate that Autosteer is now actively steering Model S, the instrument
panel displays the Autosteer icon in blue.
When Autosteer is able to detect lane
markings, it also displays the driving lane in blue:
Note: To initiate Autosteer, you must be
driving at least 5 mph (8 km/h) on a roadway
with visible lane markings. If a vehicle is
detected ahead of you, you can initiate
Autosteer at any speed, even when stationary.
Note: 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
offset from the center of the lane.
Note: In situations where you attempt to
engage Autosteer, but you are not driving
within the required driving speed for Autosteer to operate, or Autosteer is not
receiving adequate data from the camera or
sensors, a message displays on the instrument
panel indicating that Autosteer is temporarily
unavailable.
Autosteer
Driver Assistance73

Restricted Speed
Autosteer is intended for use on freeways and
highways where access is limited by entry and
exit ramps. When using Autosteer on residential roads, a road without a centerdivider, or a road where access is not limited,
Autosteer limits the driving speed. The
maximum driving speed is calculated based
on the detected speed limit plus 5 mph (10 km/h). In situations where the speed limit
cannot be detected, speed is limited to 45 mph (70 km/h). When Autosteer is
engaged in these situations, it reduces your
driving speed and your set speed to be within
these limits. You can manually accelerate to exceed the limited speed, but when you
release the accelerator pedal, Autosteer slows
Model S to the limited speed. 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, 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 is displayed on the instrument panel:
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 toretake 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 totake control at any time. If Autosteer still doesnot 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
becomes disabled for the rest of the drive. If
you don

If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 65), and you have purchased the
optional Autopilot Tech Package, you can use
Auto Lane Change to move Model S into an adjacent lane without touching the steering
wheel (which would cancel Autosteer). When both
Traffic-Aware Cruise Control and
Autosteer are active, Auto Lane Change intelligently steers Model S into an adjacent
driving lane. Using the forward looking camera, the radar sensor, and the ultrasonic
sensors, Autosteer detects lane markings and
the presence of other vehicles.
Auto Lane Change is designed for use on
highways and main roads with visible lane
markings and under relatively predictable
circumstances in which minimal steering and
driver intervention is needed.
Warning: It is the driver

If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 65), and you have purchased the
optional Autopilot Tech Package, Autopark
uses data from ultrasonic sensors and the Global Positioning System (GPS) to:

If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 65), the forward looking camera
monitors the markers on the lane you are
driving in, and the ultrasonic sensors monitor
the surrounding areas and the blind spot for
the presence of a vehicle or other objects.
When an object is detected in your blind spot
or close to the side of Model S (such as a vehicle, guard rail, etc.), colored lines radiate
from the image of Model S on the instrument
panel. The location of the lines correspond to
the location of the detected object. The color
of the lines (white, yellow, orange, or red)
represents the object

alert and always pay attention to the area
in front of Model S so you can anticipate whether any action is required.Warning: Forward Collision Warning does
not operate when Model S is traveling less than 4 mph (7 km/h).Warning: Forward Collision Warning does
not provide a warning when the driver is already applying the brake.
Automatic Emergency Braking
The forward looking camera and the radar
sensor are designed to determine the distance
from any object (vehicle, motorcycle, bicycle,
or pedestrian) traveling in front of Model S.
When a frontal collision is considered
unavoidable, Automatic Emergency Braking is designed to apply the brakes to reduce the
severity of the impact, even if you are already
applying the brakes.
When Automatic Emergency Braking applies
the brakes, the instrument panel displays a visual warning and you

Replacing Tires and Wheels
Tires degrade over time due to the
effects of
ultraviolet light, extreme temperatures, high
loads, and environmental conditions. It is
recommended that tires are replaced every six
years, or sooner if required.
Wheel rims and tires are matched to suit the
handling characteristics of the vehicle.
Replacement tires must comply with the
original
specification. If tires other than thosespecified are used, ensure that the load and
speed ratings marked on the tire (see Understanding Tire Markings on page 167)
equal or exceed those of the original
specification.
Ideally, you should replace all four tires at the same time. If this is not possible, replace the
tires in pairs (both front or both rear). When replacing tires, always re-balance and checkthe alignment of wheels.
If you replace a wheel, the TPMS (Tire Pressure
Monitoring System) sensors need to be reset to ensure they provide accurate warnings
when tires are under- or
over-inflated (see
Resetting the TPMS Sensors on page 142).
For the
specification of the original wheels
and tires installed on Model S, see Wheels and
Tires on page 166.
Warning: For your safety, use only tires
and wheels that match the original
specification (see Wheels and Tires on
page 166). Tires that do not match the
original
specification can affect the
operation of the Tire Pressure Monitoring System (TPMS).
Warning: Never exceed the speed rating
of your vehicle

TPMS malfunctions can occur for a variety of
reasons, including installing replacement or
alternate tires or wheels that prevent the
TPMS from functioning properly. Always check
the TPMS malfunction indicator light after replacing one or more tires or wheels on yourvehicle to ensure that the replacement tires or
wheels allow the TPMS to continue to function
properly.
Note: If a tire has been replaced or repaired
using a
different tire sealant than the one
available from Tesla, and a low tire pressure is
detected, it is possible that the tire sensor has
been damaged. Contact Tesla to have the fault
repaired as soon as possible.
Tire Care and Maintenance
Maintenance143