service indicator TESLA MODEL S 2017 Owner's Manual (UK) 

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

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:

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
6250 miles (10,000 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 service center, 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 (see Temporary Tire Repair on page
145).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:

Checking Brake FluidWarning: Contact Tesla immediately if you
notice increased movement of the brake
pedal or a
significant loss of brake fluid.Driving under these conditions can result in extended stopping distances or
complete brake failure.
The Brake indicator on the
instrument panel alerts you if the
quantity of
fluid in the brake
reservoir drops below the
recommended level. If it displays
while driving, stop as soon as safety
permits by gently applying the
brakes. Do not continue driving.
Contact Tesla immediately.
Fluid Level Check
Tesla checks the brake
fluid level at the
regularly scheduled maintenance intervals. To
check it yourself, park Model S on level
ground. When Model S is cool, remove the
maintenance panel (see Removing the
Maintenance Panel on page 154).
Check the fluid level visually by looking at the
outside marks on the side of the reservoir
without removing the
filler cap.
The brake
fluid level should always be
between the MIN and the MAX marks.
Note: Although brake
fluid level drops slightly
during normal use as a result of brake pad
wear, it should not drop below the MIN mark.
Topping Up the Brake Fluid
Do not top up your brake
fluid. Tesla service
does this when you bring Model S in for
regular servicing. The following instructions
are provided for information purposes and future reference only:
1. Clean the filler cap before removing to
prevent dirt from entering the reservoir.
2. Unscrew the cap and remove.
3. Top up the reservoir to the MAX mark using brake
fluid meeting DOT3specifications.4. Replace the filler cap.
Warning: Only use new fluid from a sealed
air-tight container. Never use previously
used
fluid or fluid from a previously
opened container

Use a Flatbed OnlyUse a
flatbed trailer only, unless otherwisespecified by Tesla. Do not transport Model S
with the tires directly on the ground.
Caution: Damage caused by transporting is not covered by the warranty.Caution: To transport Model S, follow theinstructions exactly as described next.
Disable Self-Leveling (air
suspension vehicles only)
If Model S is equipped with Smart AirSuspension, it automatically self-levels, even
when power is
off. To prevent damage, you
must activate Jack mode to disable self- leveling:
1. Touch Controls > Suspension on the touchscreen.
2. Press the brake pedal, then touch Very High to maximize height.
3. Touch Jack.
When Jack mode is active,
Model S displays this indicator
light on the instrument panel,
along with a message telling you
that active suspension is
disabled.
Note: Jack mode cancels when Model S is
driven over 4.5 mph (7 km/h).
Warning: Failure to activate Jack mode on
a Model S equipped with Smart Air Suspension can result in the vehicle
becoming loose during transport, which
may cause
significant damage.
Activate Tow Mode
Model S may automatically shift into Park
when it detects the driver leaving the vehicle,
even if it has previously been shifted into Neutral. To keep Model S in Neutral (which
disengages the parking brake), you must use
the touchscreen to activate Tow mode:
1. Shift into Park.
2. Press the brake pedal, then on the touchscreen, touch Controls > Settings >
Service & Reset > Tow Mode .When Tow mode is active, Model S
displays this indicator light on the
instrument panel, along with a
message telling you that Model S is
free-rolling.
Note: Tow mode cancels when Model S is
shifted into Park.
Caution: If the electrical system is not
working, and you therefore cannot release
the electric parking brake, attempt to
quick start the 12V battery. For
instructions, call Tesla. If a situation
occurs where you cannot disengage the
parking brake, use tire skids or transport Model S for the shortest possible distance
using wheeled dollies. Before doing so,
always check the dolly manufacturer