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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. Keep in
mind however, that Autosteer is intended for
use only on highways and limited-access roads
with a fully attentive driver. 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 steeringwheel, 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 assist you
in steering 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
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If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 68), and you have purchased the
optional Autopilot Tech Package, you can use
Auto Lane Change to move Model S into an adjacent lane. When both
Traffic-AwareCruise Control and Autosteer are active, Auto
Lane Change intelligently assists you in
steering 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 predictablecircumstances in which minimal steering and
driver intervention is needed.
Warning: It is the driver
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If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 68), and you have purchased the
optional Autopilot Tech Package, Autopark
uses data from ultrasonic sensors and the Global Positioning System (GPS) to:
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If Model S is equipped with Driver Assistance
components (see About Driver Assistance on
page 68), 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
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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
Page 141 of 186

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 168)
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 check
the 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 143).
For the
specification of the original wheels
and tires installed on Model S, see Wheels and
Tires on page 167.
Warning: For your safety, use only tires
and wheels that match the original
specification (see Wheels and Tires on
page 167). 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
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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
144Model S Owner
Page 145 of 186

Tire Repair Kit
Your Model S has no spare tire. Depending on
the legislations that apply to the region in
which you purchased Model S, a tire repair kit
may or may not be included. If a tire repair kit
was not provided in Model S upon delivery,
you can purchase one from Tesla.
The tire repair kit consists of a compressor
and a canister of tire sealant (enough to repair
one tire). When injected into a tire, the sealant
can penetrate a small puncture up to 1/4" (6 mm) to form a temporary repair.
Note: For punctures larger than 1/4” (6 mm),
severe tread damage, a damaged sidewall,
ripped tires or tires that have come
off the rim,
call Roadside Assistance.
Warning: The tire repair kit is a temporary
repair only. You must repair or replace a
damaged tire as soon as possible.Warning: Do not exceed 30 mph
(48 km/h) when driving with a tire that
has been temporarily repaired with sealant.Warning: Follow all directions and
warnings on the tire repair kit before
starting a repair.Caution: Do not drive on a deflated tire as
this can cause serious damage.Tire Sealant Canister
The tire sealant provided in the Tesla tire
repair kit is approved for use with Model S and is designed not to damage the TPMS (Tire
Pressure Monitoring System) sensors.
Therefore, you must replace it only with one of
the same type and capacity (see Replacing
the Sealant Canister on page 148). Tire
sealant canisters can be purchased from Tesla.
The tire sealant has an expiration date printed
on the outside of the canister. If the expiration
date has passed, the sealant might not work
as expected. Always replace an expired tire
sealant canister.Warning: Do not use any tire sealant
other than the one available from Tesla.
Doing so could cause tire pressure
sensors to malfunction.Warning: Always read and follow the
safety and handling instructions printed on the sealant canister.Warning: Keep tire sealant out of the
reach of children.Warning: Tire sealant can be harmful if it
contacts the eyes or if swallowed or
inhaled. If the sealant comes into contact with your eyes, immediately
flush with
water and seek medical attention if
irritation persists. If swallowed, do not
induce vomiting and seek medical assistance immediately. If inhaled, breathe
fresh air. Inhalation can cause drowsiness
and dizziness. If breathing is
affected,seek medical assistance immediately.
Temporary Tire Repair
Maintenance145