2017 TESLA MODEL S wheel

Braking Systems
Model S has an anti-lock braking system
(ABS) that prevents the wheels from locking when you apply maximum brake pressure. This
improves steering control during heavy
braking in most road conditions.
During emergency braking conditions, the
ABS constantly monitors the speed of each
wheel and varies the brake pressure according to the grip available.
The alteration of brake pressure can be felt as
a pulsing sensation through the brake pedal.
This demonstrates that the ABS is operating
and is not a cause for concern. Keep
firm and
steady pressure on the brake pedal while
experiencing the pulsing.
The ABS indicator flashes briefly on
the instrument panel when you firststart Model S. If this indicator lights
up at any other time, an ABS fault
has occurred and the ABS is not
operating. Contact Tesla. The braking system remains fully operational and
is not
affected by an ABS failure.
However, braking distances may increase.
If the instrument panel displays this
indicator at any time other than
displaying
briefly when you first start
Model S, a brake system fault is
detected or the brake
fluid level is
low. Contact Tesla immediately.
Emergency Braking
In an emergency, fully press the brake pedal and maintain
firm pressure, even on low
traction surfaces. The ABS varies the braking
pressure to each wheel according to the
amount of traction available. This prevents
wheels from locking and ensures that you stop
as safely as possible.
Warning: Do not pump the brake pedal.
Doing so interrupts operation of the ABS
and can increase braking distance.Warning: Always maintain a safe distance
from the vehicle in front of you and be
aware of hazardous driving conditions.
While the ABS can improve stopping
distance, it cannot overcome the laws of physics. It also does not prevent the
danger of hydroplaning (where a layer of
water prevents direct contact between the tires and the road).
If Model S is equipped with Autopilot
hardware, Automatic Emergency Braking
automatically applies full braking in situations
where a collision is considered imminent (see
Automatic Emergency Braking on page 86).
Brake Wear Model S brake pads are equipped with wear
indicators. A wear indicator is a thin metal
strip attached to the brake pad that squeals as it rubs against the rotor when the pad wears
down. This squealing sound indicates that the
brake pads have reached the end of their
service life and require replacement. To stop
the squealing, contact Tesla Service.
Warning: Neglecting to replace worn
brake pads results in damage to the
braking system and can create a braking
hazard.
Brakes
54Model S Owner

Regenerative Braking
Whenever Model S is moving and your foot is
off the accelerator, regenerative braking slows
down Model S and feeds any surplus energy
back to the Battery.
By anticipating your stops and simply
removing pressure from the accelerator to slow down, you can take advantage ofregenerative braking to increase driving range.
Of course, this is no substitute for regular
braking when needed for safety.
Note: If regenerative braking is aggressively
slowing Model S, such as on a steep descent,
brake lights turn on to alert other road users
that you are slowing down.
The Energy app displays real-time feedback
on the amount of energy being gained by
regenerative braking. You can also display the
power meter on either side of the instrument
panel by choosing Energy using the scroll
button on the steering wheel (see Steering
Wheel on page 37).
The amount of energy fed back to the Battery using regenerative braking can depend on the
current state of the Battery and the charge
level setting that you are using. If regenerative
braking is limited, a dashed yellow line
displays on the power meter. For example,
regenerative braking may be limited if the Battery is already fully charged or if the
ambient temperature is low.
To Set the Regenerative Braking Level
You can use the touchscreen to change the
level of regenerative braking:
1. Touch Controls > Driving > Regenerative Braking.
2. Choose from two levels:

How It WorksThe traction control system constantly
monitors the speed of the front and rear
wheels. If Model S experiences a loss of
traction, the system minimizes wheel spin by
controlling brake pressure and motor power.
By default, the traction control system is
always active. Under normal conditions, it should remain active to ensure maximum
safety.This indicator flashes on the
instrument panel whenever the
traction control system is actively
controlling brake pressure and motor
power to minimize wheel spin. If the
indicator stays on, a fault is detected with the traction control system.
Contact Tesla Service.Warning: Traction control cannot prevent
accidents caused by driving dangerously
or turning too sharply at high speeds.Warning: If the above indicator remains
illuminated in situations in which you have
not enabled Slip Start (described next), the traction control system may not be
operating correctly. Contact Tesla Service immediately.
Allowing Wheel Slip
To allow the wheels to spin at a limited speed,
you can enable Slip Start. Slip Start can be
enabled only when Model S is moving 30 mph
(48 km/h) or slower. Slip Start automatically
disables when the speed exceeds 50 mph
(80 km/h).
Under normal conditions, Slip Start should not
be enabled. Enable it only in circumstances where you deliberately want the wheels tospin, such as:

How Park Assist Works
Model S has several sensors designed to detect the presence of objects nearby. When
moving slowly in Drive or Reverse, the sensors
alert you if an object is detected in close proximity to the front and rear of your
Model S.
Note: Depending on date of manufacture and options selected at time of purchase, someModel S vehicles are not equipped with theparking sensors.Warning: The Park Assist images provided
below are representative only. The exact
number and location of sensors may vary
depending on the date your Model S was
manufactured.
The sensors are activated when driving less
than 5 mph (8 km/h).
Warning: Never depend on Park Assist to
inform you if an area you are approaching is free of objects and/or people. Several
external factors can reduce the
performance of Park Assist, causingeither no readings or false readings (see
Limitations and False Warnings on page
58). Therefore, depending on Park Assist
to determine if Model S is approaching an obstruction can result in damage to the
vehicle and/or objects, and can
potentially cause serious injury. Always
inspect the area with your own eyes.
When reversing, perform shoulder checks and use all mirrors. Park assist does not
detect children, pedestrians, bicyclists,
animals, or objects that are moving, protruding, located too far above or
below the sensors, or too close or too far
from the sensors. Park Assist is for
guidance purposes only and is not intended to replace your own direct visual
checks. It is not a substitute for careful
driving.
Visual and Audio Feedback
When you shift to Reverse, the Park Assist
view displays on the left side of the instrument
panel, showing any objects that are in close
proximity to the front and rear of Model S.
This view closes when you shift into Drive
unless objects are detected close to the front
of the Model S, in which case the Park Assist
view closes automatically when your driving
speed exceeds 5 mph (8 km/h) . When
reversing, visual feedback also displays on the
touchscreen, immediately below the camera
view (see Rear View Camera on page 64).
You can manually close the park assist view on
the touchscreen by touching the X in the
upper left corner.
When driving with the Camera app displayed
on the touchscreen, you can switch to the
Park Assist view when driving at speeds below
5 mph (8 km/h) . Touch the button located in the upper left corner of the Camera appwindow. This is useful if you need assistance
with parallel parking.
If chimes are turned on (see Controlling
Audible Feedback on page 58), an audible
beep sounds as you approach an object. You
can temporarily mute the chime by pressing
the scroll wheel on the left side of the steering
wheel or by touching the mute button located
on the in the bottom left corner of the Park Assist view.
Note: If Model S is equipped with software
version 6.1 or newer, and you are driving with
the camera app displayed on the touchscreen,
you can switch to the Park Assist view by
touching the icon in the upper left corner of
Park Assist
Driving57

the camera app window. You must be drivingat speeds below 5 mph (8 km/h).
Note: If a sensor is unable to provide
feedback, the instrument panel displays an
alert message.Caution: Keep sensors clean from dirt,
debris, snow, and ice. Avoid using a high
pressure power washer on the sensors
and do not clean a sensor with a sharp or abrasive object that can scratch or
damage its surface.Caution: Do not install accessories or
stickers on or near the parking sensors.
Controlling Audible Feedback
You can use Park Assist with or without
audible feedback. To turn chimes on or
off,touch Controls > Settings > Safety &
Security > Park Assist Chimes.
You can also mute the chimes temporarily by
pressing the scroll wheel on the left side of the steering wheel or by touching the mute buttonin the bottom left corner of the Park Assist
view. The chimes are muted until you shift into
a
different gear or drive over 5 mph (8 km/h).
Limitations and False Warnings
The parking sensors may not function
correctly in these situations:

Camera Location
Model S is equipped with a rear view camera
located above the rear license plate.
Whenever you shift into Reverse, the
touchscreen displays the view from the
camera. Guide lines show your driving path
based on the position of the steering wheel. These guide lines adjust appropriately as you
move the steering wheel.
Note: Visual feedback from the parking
sensors displays below the camera image (see
Park Assist on page 57).
Note: Depending on date of manufacture and
options selected at time of purchase, some Model S vehicles are not equipped with
parking sensors.
Warning: Never depend on the rear view
camera to inform you if the area behind
you is free of objects and/or people when
reversing. The camera may not detect
objects or barriers that can potentially
cause damage or injury. In addition, several external factors can reduce the
performance of the camera, including a
dirty or obstructed lens. Therefore,
depending on the rear view camera to
determine if Model S is approaching an
obstruction can result in damage to the vehicle and/or objects, and can
potentially cause serious injury. Always
inspect the area with your own eyes.
When reversing, perform shoulder checks and use all mirrors. Use the camera forguidance purposes only. It is not intendedto replace your own direct visual checks
and is not a substitute for careful driving.
Cleaning the Camera
To ensure a clear picture, keep the camera
lens clean, and free of obstructions. Remove
any buildup of dirt by occasionally wiping the camera lens with a soft damp cloth.
Caution: Do not use chemical-based orabrasive cleaners. Doing so can damage
the surface of the camera lens.
Rear View Camera
64Model S Owner

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