2014 TESLA MODEL S sensor

Tires and WheelsTires and Wheels
18MODEL S
Tires and WheelsMaintaining Tire Pressures
Keep tires inflated to the pressures shown on
the Tire and Loading Information label located
on the driver’s door pillar (even if it differs from
the pressure printed on the tire itself).
The Tire Pressure indicator light does not
immediately turn off when you adjust tire
pressure. After inflating the tire to the
recommended pressure, you must drive over 25
mph (40 km/h) for more than 10 minutes to
activate the Tire Pressure Monitoring System
(TPMS), which turns off the Tire Pressure
indicator light.
If the indicator light flashes for one minute
whenever you power on Model S, a fault with
the Tire Pressure Monitoring System (TPMS) is
detected (see page 21).
Checking and Adjusting Tire Pressures
Follow these steps when tires are cold and
Model S has been stationary for over three
hours:
1. Remove the valve cap.
2. Firmly press an accurate tire pressure
gauge onto the valve to measure pressure. 3.
If required, add air to reach the
recommended pressure.
4. Recheck pressure by removing and
reattaching the tire gauge.
5. If you added too much air, release air by
pressing the metal stem in the center of the
valve.
6. Recheck the pressure with the tire gauge
and adjust if necessary.
7. Replace the valve cap to prevent dirt from
entering. Periodically check the valve for
damage and leaks.
WARNING: Under-inflation is the most
common cause of tire failures. It can
cause a tire to overheat, resulting in severe tire
cracking, tread separation, or blowout, which
causes unexpected loss of vehicle control and
increased risk of injury . Under-inflation also
reduces Battery range and tire tread life.
WARNING: Check tire pressures using an
accurate pressure gauge when tires are
cold. It takes only one mile of driving to warm
up the tires sufficiently to affect tire pressures.
Parking the vehicle in direct sunlight or in hot
weather can also affect tire pressures. If you
must check warm tires, expect increased
pressures. Do not let air out of warm tires in an
attempt to match recommended cold tire
pressures. A hot tire at or below the
recommended cold tire inflation pressure is
dangerously under-inflated.
WARNING: Do not use any tire sealant
other than the type provided in a Tesla
tire repair kit. Other types can cause tire
pressure sensors to malfunction. If your
Model S did not include a tire repair kit, you can
purchase one from Tesla Motors.
Inspecting and Maintaining Tires
Regularly 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.
The Tire Pressure indicator light on
the instrument panel alerts you if
one or more tires is under- or
over-inflated.
Model S Quick Guide - NA Rev C.book Page 18 Wednesday, December 18, 2013 12:40 PM

Tires and Wheels
SAFETY INFORMATION21
CAUTION: Using non-recommended tire
chains, or using tire chains on other sized
tires, can damage the suspension, body,
wheels, and/or brake lines. Damage caused by
using non-recommended tire chains is not
covered by the warranty.
CAUTION: Ensure that tire chains cannot
touch suspension components or brake
lines. If you hear the chains making
unusual noises that would indicate contact with
Model S, stop and investigate immediately.
Tire Pressure Monitoring
Each tire should be checked monthly when
cold and inflated to the recommended
pressures that are printed on the Tire and
Loading Information label located on the
d r i ve r ’s d o o r p i l l a r (s e e p a g e 1 8 ) . I f yo u r ve h i c l e
has tires of a different size than the size
indicated on the vehicle pl acard or tire inflation
pressure label, determine the proper tire
inflation pressure for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that displays a low tire pressure
telltale (Tire Pressure Warning) on the
instrument panel when one or more of your
tires is significantly under-inflated. Accordingly,
when the Tire Pressure indicator light displays
on the instrument panel alerting you of low tire
pressure, stop and check your tires as soon as
possible, and inflate them to the proper
pressure (see page 18). Driving on a
significantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and
tire tread life, and may affect the vehicle's
handling and stopping ability.
If Model S detects a fault with the Tire
Pressure Monitoring System (TPMS),
this indicator flashes for one minute
whenever you power on Model S.
NOTE: Installing accessories that are not
approved by Tesla can interfere with the TPMS
system.
WARNING: The TPMS is not a substitute
for proper tire maintenance, including
manually checking tire pressures and regularly
inspecting the condition of tires. It is the
driver's responsibility to maintain correct tire pressure, even if under-inflation has not
reached the level for the TPMS to trigger the
Tire Pressure Warning on the instrument panel.
TPMS Malfunction
Model S has also been equipped with a TPMS
malfunction indicator to indicate when the
system is not operating properly.
The TPMS malfunction indicator is combined
with the low tire pressure
indicator light. When
the system detects a malfunction, the indicator
light flashes for approximately one minute after
Model S powers on, and then remains
continuously lit. This sequence continues upon
subsequent vehicle start-ups as long as the
malfunction exists.
When the TPMS malfunction indicator is on, the
system might not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions can occur for a variety of reasons,
including installing replacement or alternate
tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check
the TPMS malfunction indicator light after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and 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.
Replacing a Tire Sensor
If the Tire Pressure wa rning indicator displays
frequently, contact Tesla to determine if a tire
sensor needs to be replaced. Tire sensors must
be replaced by a Tesla service technician who
can perform a brief setup procedure. If a
non-Tesla service center repairs or replaces a
tire, the tire sensor will not work until Tesla
performs the setup procedure.
Model S Quick Guide - NA Rev C.book Page 21 Wednesday, December 18, 2013 12:40 PM