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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 89).
Warning: Automatic Emergency Braking
is not designed to prevent a collision. At best, it can minimize the impact of a
frontal collision by attempting to reduce
your driving speed. Depending on Automatic Emergency Braking to avoid a
collision can result in serious injury or death.
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.
Brakes must be periodically inspected visually by removing the tire and wheel. For detailed
specifications and service limits for rotors and
brake pads, see Brakes on page 165.
Warning: Neglecting to replace worn
brake pads results in damage to the
braking system and can create a braking
hazard.
Brakes
Driving57
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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 39).
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:
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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:
Page 60 of 186

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
61). 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 67).
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 app
window. This is useful if you need assistance with parallel parking.
If chimes are turned on (see Controlling
Audible Feedback on page 61), 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
60Model S Owner
Page 61 of 186

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:
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When Model S is stopped, Vehicle Holdcontinues to apply the brakes even after you
remove your foot from the brake pedal. When
driving on a hill or on a
flat surface, brake as
you normally would. You can release the brake
pedal, and remain stopped (even on a hill),
whenever the instrument panel displays the
Vehicle Hold indicator light.
This indicator displays on the
instrument panel whenever Vehicle
Hold is engaged.
To disengage Vehicle Hold, press the
accelerator pedal or press and release the
brake pedal.
Note: Shifting into Neutral also disengages Vehicle Hold.
Note: After actively braking Model S for
approximately 10 minutes, Model S shifts into
Park and Vehicle Hold cancels. Model S also shifts into Park if it detects that the driver has
left the vehicle.
Vehicle Hold
62Model S Owner
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Performance Dual-Motor Vehicles
Only
Launch Mode, available on performance dual-
motor vehicles only, provides optimum
acceleration on surfaces with good traction.
Note: Using launch mode increases stress on
the vehicle
Page 64 of 186
Displaying Trip InformationTrip information displays on the touchscreen
when you touch Controls > Trips . For the
current trip, you can display distance, duration
and average energy usage. You can also show
distance and total and average energy used since your last charge and for additional trips.
To name or rename a trip, touch the trip