2020 TESLA MODEL Y warning light

Braking SystemsWARNING: Properly functioning braking systems
are critical to ensure safety. If you experience a
problem with the brake pedal, brake caliper, or
any component of a Model Y braking system,
contact Tesla immediately.
Model Y 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 briefly flashes yellow
on the
touchscreen when you first start
Model Y. 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. Drive cautiously and avoid
heavy braking.
If the touchscreen displays this red brake
indicator at any time other than
briefly

when you first start Model Y, a brake
system fault is detected, or the level of
the brake
fluid is low. Contact Tesla
immediately. Apply steady pressure and
keep the brakes
firm to bring the vehicle
to a stop when safe to do so.
If the touchscreen displays this yellow
brake indicator at any time, a brake booster fault is detected. Apply steady
pressure and keep the brakes
firm to
bring the vehicle to a stop when safe to do so. Hydraulic Boost Compensation will be active (see
Hydraulic Boost
Compensation on page 61).
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).
Automatic Emergency Braking is designed to automatically brake in situations where a collision is
considered imminent (see
Automatic Emergency
Braking on page 115).
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.
CAUTION: In emergency situations, if the brakes
are not functioning properly, press and hold the
Park button on the drive stalk to bring the vehicle
to a stop. Do not use this method to stop the
vehicle unless absolutely necessary.
Brake Disc Wiping
To ensure your brakes remain responsive in cold and
wet weather,
Model Y is equipped with brake disc
wiping. When cold and wet weather is detected, this
feature repeatedly applies an imperceptible amount of brake force to clear away water from the surface of the brake discs.
Hydraulic Fade Compensation
Your vehicle is also equipped with hydraulic fade
compensation. This feature assists in monitoring brake
system pressure and ABS activity for instances of lower
brake performance. If lower brake performance is
detected (for example, as a result of brake fade, or cold
or wet conditions), you may feel the brake pedal pull away from your foot, detect some noise, and notice a strong increase in vehicle braking. Continue to press the
brake pedal without releasing or "pumping" them

WARNING: Always maintain a safe driving
distance from the vehicle in front of you and
exercise caution when driving conditions are
hazardous. Do not rely on brake disc wiping or
hydraulic fade compensation to act as a
substitute for adequately applying the brakes.
Hydraulic Boost Compensation
Model Y is equipped with a brake booster that provides
a mechanical advantage that
effectively activates the
brakes when the brake pedal is pressed. Hydraulic boost
compensation provides mechanical assist in the event of a brake booster failure. If a brake booster failure is detected, the brake pedal may feel harder to press and you may hear some noise when you press the brake
pedal. To stop the vehicle, apply adequate steady force on the brake pedal without releasing or "pumping" them. Exercise caution while driving and maintain a safe
distance as brake pedal responsiveness and braking performance may be degraded.
Regenerative Braking
Whenever Model Y is moving and your foot is off the
accelerator, regenerative braking slows down
Model Y
and feeds any surplus energy back to the Battery.
By anticipating your stops and reducing or removing
pressure from the accelerator pedal to slow down, you
can take advantage of regenerative 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 Y (such as when your foot is completely off the
accelerator pedal at highway speeds), the brake lights turn on to alert others that you are slowing down.
NOTE: Installing winter tires with aggressive compound
and tread design may result in temporarily-reduced regenerative braking power. However, your vehicle is
designed to continuously recalibrate itself, and after changing tires it will increasingly restore regenerative braking power after some moderate-torque straight-line accelerations. For most drivers this occurs after a short period of normal driving, but drivers who normally
accelerate lightly may need to use slightly harder accelerations while the recalibration is in progress.
WARNING: In snowy or icy conditions Model Y
may experience traction loss during regenerative
braking.
The amount of energy fed back to the Battery using regenerative braking can depend on the current state of the Battery. For example, regenerative braking may be
limited if the Battery is already fully charged or if the
ambient temperature is too cold.
NOTE: If regenerative braking is limited, a dashed line
displays on the energy bar (see
Driving Status on page
57).
Stopping Mode
Regenerative braking decelerates Model Y whenever you
release the accelerator pedal when driving. You can
choose what you want
Model Y to do once the driving
speed has been reduced to a very low speed (almost at
a stop) and both the accelerator pedal and brake pedal
are released. While in Park, touch
Controls > Driving >
Stopping Mode and choose from these options:

NOTE: Loss of trailer lights when towing may be the
result of a fault in the trailer wiring or excessive power
consumption by the lights connected to the trailer output(s). When this occurs, a Trailer Mode icon
appears on the touchscreen. Fix any issues with the wiring and/or reduce the number of lights connected to the trailer output(s), then toggle Trailer Mode
off and
on again.
CAUTION: Always ensure that the trailer electrical
cable does not contact or drag on the ground and
there is enough slack in the cable to allow for
turns.
WARNING: Use only the electrical connections
designed by Tesla. Do not attempt to directly
splice or attempt to connect a trailer’s electrical
wiring using any other method. Doing so can
damage the vehicle

Stop Light and Stop Sign Warning
NOTE: Depending on market region, vehicle
configuration, options purchased, and software version,
your vehicle may not be equipped with Stop Light and
Stop Sign Warning.
While Autosteer is in use, Model Y displays a warning
on the
touchscreen and sounds a chime if it detects
that you are likely to run through a red stop light or stop sign. If this happens,
TAKE IMMEDIATE
CORRECTIVE ACTION!
The visual and audible warnings cancel after a few seconds, or when you press the brake pedal, whichever
comes
first.
Stop Light and Stop Sign Warning provides warnings
only. It makes no attempt to slow down or stop
Model Y
at red tra

WARNING: Forward Collision Warning may
provide a warning in situations where the
likelihood of collision may not exist. Stay alert and
always pay attention to the area in front of Model
Y so you can anticipate whether any action is
required.
WARNING: Forward Collision Warning operates
only when driving between approximately 7 mph
(10 km/h) and 90 mph (150 km/h).
WARNING: Forward Collision Warning does not
provide a warning when the driver is already
applying the brake.
Automatic Emergency Braking
The forward looking camera(s) and the radar sensor are designed to determine the distance from a detected object traveling in front of
Model Y. When a frontal
collision is considered unavoidable, Automatic Emergency Braking is designed to apply the brakes to
reduce the severity of the impact.
When Automatic Emergency Braking applies the brakes,
the
touchscreen displays a visual warning and sounds a
chime. You may also notice abrupt downward movement of the brake pedal. The brake lights turn on to alert other road users that you are slowing down.
If driving 35 mph (56 km/h) or faster, the brakes are
released after Automatic Emergency Braking has reduced your driving speed by
30 mph (50 km/h). For
example, if Automatic Emergency Braking applies braking when driving
56 mph (90 km/h), it releases the
brakes when your speed has been reduced to
26 mph
(40 km/h).
Automatic Emergency Braking operates only when driving between approximately
7 mph (10 km/h) and 90
mph (150 km/h).
Automatic Emergency Braking does not apply the
brakes, or stops applying the brakes, when:

During Charging
During charging, the charge port light (the Tesla "T"
logo) pulses green, and the touchscreen displays the
charging status. The frequency at which the charge
port light pulses slows down as the charge level approaches full. When charging is complete, the light stops pulsing and is solid green.
NOTE: If Model Y is locked, the charge port light does
not light up.
If the charge port light turns red while charging, a fault
is detected. Check the touchscreen for a message describing the fault. A fault can occur due to something as common as a power outage. If a power outage
occurs, charging resumes automatically when power is
restored.
NOTE: When charging, particularly at high currents, the
refrigerant compressor and fan operate as needed to keep the Battery cool. Therefore, it is normal to hear sounds during charging.
NOTE: Air conditioning performance is generally not
affected by charging. However, under certain
circumstances (for example, you are charging at high currents during a particularly warm day), the air coming from the vents may not be as cool as expected and a message displays on the
touchscreen. This is normal
behavior and ensures that the Battery stays within an optimum temperature range while charging to support longevity and optimum performance.
WARNING: Never spray liquid at a high velocity
(for example, if using a pressure washer) towards
the charge port while charging. Failure to follow
these instructions can result in serious injury or
damage to the vehicle, charging equipment, or
property.
Stopping Charging
Stop charging at any time by disconnecting the charge
cable or touching
Stop Charging on the touchscreen.
NOTE: To prevent unauthorized unplugging of the
charge cable, the charge cable latch remains locked
and
Model Y must be unlocked or able to recognize
your
authenticated phone before you can disconnect
the charge cable.
To disconnect the charge cable using a connector:
1.
Press and hold the button on the connector handle to release the latch. Alternatively, unlock the vehicle
by opening a door, using a
key card or key fob, or
touching
Stop Charging on the touchscreen. These
methods unlock the charge port as well.
2.
Pull the connector from the charge port.
To disconnect the charge cable using an adapter at a
public charge station:
1. Ensure that Model Y is unlocked.2.
While holding the public charging handle in one
hand and the adapter in the other hand, press and hold the button on the public charging handle and
pull both outwards, removing the handle and
adapter at the same time.
NOTE: If the charging station handle separates from
the adapter, leaving the adapter in
Model Y, use the
touchscreen to unlock the charge port (touch the charging icon on the overhead view of the vehicle).
3.
Press and hold the charging handle button again to release the adapter from the charging handle.
NOTE: The charge port automatically closes within
approximately 10 seconds of removing the connector from the charge port.
CAUTION: Tesla strongly recommends leaving
Model Y plugged in when not in use. This
maintains the Battery at the optimum level of
charge.
CAUTION: Model Y will not shift out of Park if the
charge port is unable to determine whether a
charging cable is plugged in. Ensure any charging
cables are unplugged and follow the instructions
on the touchscreen to proceed (see Park on page
51.
Manually Releasing Charge Cable
If the usual methods for releasing a charge cable from the charge port (using the charge handle release button, touchscreen, or mobile app) do not work,
carefully follow these steps:
1.
Ensure that Model Y is not actively charging by
displaying the charging screen on the touchscreen. If necessary, touch
Stop Charging.
2.
Open the rear trunk.
3.
Pull the charge port

4. Pull the charge cable from the charge port.CAUTION: Use the release cable only in situations
where you can not release the charge cable using
the usual methods. Continuous use can damage
the release cable or charging equipment.
WARNING: Do not perform this procedure when
your vehicle is charging, or if any orange high
voltage conductors are exposed. Failure to follow
these instructions can result in electric shock and
serious injury or damage to the vehicle. If you have
any uncertainty as to how to safely perform this
procedure, contact your nearest Service Center.
WARNING: Do not pull the release cable while
simultaneously attempting to remove the charge
cable from the charge port. Always pull the release
cable before attempting to remove the charge
cable. Failure to follow these instructions can
result in electric shock and serious injury.
Charge Port Light

Maintaining Tire Pressures
If you are not towing a trailer, keep tires inflated to the
pressures shown on the Tire and Loading Information label, even if it
differs from the pressure printed on the
tire itself. The Tire and Loading Information label is located on the center door pillar and is visible when the
front door is open.
If you are towing a trailer, do not use the tire pressures printed on the Tire and Loading Information Label.
Instead, refer to the tire pressures published in the
towing topic
(see Towing and Accessories on page 73).
NOTE: If your Model Y is fitted with Tesla accessory
wheels or tires, some information may be
different from
the labels on the vehicle.
The Tire Pressure indicator light on the
touchscreen alerts you if one or more
tires is
under-inflated.
After inflating the tire to the recommended pressure,
you must drive over
15 mph (25 km/h) for a short
amount of time 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 Y, a fault with the TPMS is detected
(see
TPMS Malfunction on page 168).
NOTE: Display tire pressures in the "Cards" area, located
toward the bottom on the left side of the touchscreen
,
as described in Touchscreen Overview on page 4. You
can also choose whether you want to display tire pressures using BAR or PSI by touching
Controls >
Display > Tire Pressure.
WARNING: Under-inflation is the most common
cause of tire failures and 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 the vehicle