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
Changing Charge SettingsThe charge settings screen displays on the
touchscreen whenever the charge port door is
open.
To display charge settings at any time, touch the Battery icon on the top of the
touchscreen, or touch Controls > Charging
(located in the upper right portion of the
Controls screen).
Note: The following illustration is provided for
demonstration purposes only and may vary
slightly depending on the software version
and market region of your Model S.
1. Charge status messages (such as
Charging Scheduled, Charging In
Progress) display here.
2. To adjust the charge limit, touch Set Charge Limit, then drag the slider bar. You
can charge to any level from 50% to 100%
based on your driving needs. The setting
you choose applies to both immediate and scheduled charging sessions.
3.Location-specific schedule. With Model S
in Park, set a specific time when you want
Model S to begin charging at the current
location. If, at the scheduled time, Model S
is not plugged in at the location, it will
start charging as soon as you plug it in as
long as you are plugging it in within six
hours of the scheduled time. If you plug in
after six hours, Model S does not start charging until the scheduled time on the
next day. To override this setting, touch Start Charging or Stop Charging (see
item 4). When you set a scheduled
charging time, Model S displays the set
time on the instrument panel and the
touchscreen.
4. Touch to open the charge port door or to start (or stop) charging.
5. The current automatically sets to the maximum current available from the
attached charge cable, unless it was
previously reduced to a lower level.
If needed, touch the up/down arrows to change the current (for example, you may
want to reduce the current if you are
concerned about overloading a domestic
wiring circuit shared by other equipment).
It is not possible to set the charging
current to a level that exceeds the
maximum available from the attached
charge cable.
When you change the current, Model S
remembers the location. So if you
subsequently charge at the same location,
you do not need to change it again.
Note: If Model S automatically reduced a charging location
Inspecting and Maintaining TiresRegularly inspect the tread and side walls for
any sign of distortion (bulges), cuts or wear.Warning: Do not drive Model S if a tire is
damaged, excessively worn, or inflated to
an incorrect pressure. Check tires
regularly for wear, and ensure there are
no cuts, bulges or exposure of the ply/
cord structure.
Tire Wear
Adequate tread depth is important for proper
tire performance. Tires with a tread depth less
than 4/32” (3 mm) are more likely to
hydroplane in wet conditions and should not
be used. Tires with a tread depth less than
5/32” (4 mm) do not perform well in snow and
slush and should not be used when driving in
winter conditions.
Model S is originally
fitted with tires that have
wear indicators molded into the tread pattern. When the tread has been worn down to 4/32”(3 mm), the indicators start to appear at thesurface of the tread pattern, producing the
effect of a continuous band of rubber across
the width of the tire. For optimal performance and safety, Tesla recommends replacing tires
before the wear indicators are visible.
Tire Rotation, Balance, and Wheel Alignment
Tesla recommends rotating the tires every
5000 miles (8000 km).
Unbalanced wheels (sometimes noticeable as
vibration through the steering wheel)
affectvehicle handling and tire life. Even with regular
use, wheels can get out of balance. Therefore,
they should be balanced as required.
If tire wear is uneven (on one side of the tire
only) or becomes abnormally excessive, check
the alignment of wheels.
Note: When replacing only two tires, always
install the new tires on the rear.
Punctured Tires
A puncture eventually causes the tire to lose pressure, which is why it is important to check
tire pressures frequently. Permanently repair
or replace punctured or damaged tires as
soon as possible.
Your tubeless tires may not leak when
penetrated, provided the object remains in the tire. If, however, you feel a sudden vibration or
ride disturbance while driving, or you suspect a tire is damaged, immediately reduce yourspeed. Drive slowly, while avoiding heavy
braking or sharp steering and, when safe to do so, stop the vehicle. Arrange to have Model S
transported to a Tesla, or to a nearby tire
repair center.
Note: In some cases, you can temporarily
repair small tire punctures (under 1/4” (6
mm)) using an optional tire repair kit available
from Tesla. This allows you to slowly drive
Model S to Tesla or to a nearby tire repair
facility.Warning: Do not drive with a punctured
tire, even if the puncture has not causedthe tire to
deflate. A punctured tire candeflate suddenly at any time.
Flat Spots
If Model S is stationary for a long period in
high temperatures, tires can form
flat spots.
When Model S is driven, these flat spots cause
a vibration which gradually disappears as the
tires warm up and regain their original shape.
To minimize
flat spots during storage, inflatetires to the maximum pressure indicated on the tire wall. Then, before driving, release airto adjust tire pressure to the recommended
levels.
Improving Tire Mileage
To improve the mileage you get from your
tires, maintain tires at the recommended tire
pressures, observe speed limits and advisory
speeds, and avoid: