2020 TESLA MODEL Y Owner´s Manual

For more information on troubleshooting Mobile
Connector or Wall Connector status lights, refer to the
product

You can also try charging your vehicle using a Tesla
Supercharger or Destination Charging location, all of
which can be located through the map on your vehicle

While this alert is present, the deceleration rate of the
vehicle due to regenerative braking will be reduced and more brake pedal application will be required to slow the vehicle (similar to what is needed in a gas-powered,
non-electric, vehicle).
This alert is expected under the following conditions:

This alert is often accompanied by other alerts that can
help you identify and troubleshoot the issue. Start by
investigating any other displayed alerts that relate to charging issues.
Alternatively, you can check Mobile Connector or Wall Connector status lights to
confirm power to the device,
and also refer to the product owner’s manual for
troubleshooting information based on blink codes. If using other (non-Tesla) external charging equipment, check for a display or other user interface that provides troubleshooting help.
If there is clearly no power to the charging equipment, check the circuit breaker for the wall outlet / Wall Connector to make sure it has not tripped.
Further troubleshooting tips based on equipment type:

(PCS_a054)
Unable to charge
Check for an extension cord or bad
utility wiring
Charging has been interrupted because the onboard
charger in your vehicle has detected an unusually large voltage drop.
Likely causes of this issue include:

(UMC_a004)
Unable to charge with Mobile Connector
Voltage too high / Try a different
wall outlet
The vehicle cannot charge, or charging is interrupted,
because
either the Mobile Connector:

(UMC_a017)
Charging speed reduced
High temperature detected by Mobile Connector
High temperature detected by Mobile Connector alerts indicate the outlet used to charge is becoming too warm, so charging has been slowed to protect the
outlet.
This is not typically an issue with your vehicle or your
Mobile Connector, but rather an issue with the outlet. A
warm outlet may be caused by a plug that is not fully inserted, a loose building wiring connection to the outlet, or an outlet that is beginning to wear out.
To regain normal charge speed, make sure your adapter
is fully plugged into the outlet. If charging speed does not return to normal, contact an electrician to inspect the outlet and building wiring connections to the outlet and complete any repairs needed.
If the outlet is worn, it should be replaced with a high-
quality outlet. Consider upgrading to a Tesla Wall
Connector for greater convenience and highest charging speed.
(VCFRONT_a182)
12V battery must be replaced soon
Software updates will not complete
until serviced
The 12V battery has aged or degraded and needs to be
replaced. Until the battery is replaced, vehicle software updates will not complete.
It is recommended to replace the battery at your earliest convenience. In the meantime, continue normal use of the vehicle.
The vehicle is still OK to drive with this alert present, for
a period of time. However, if you continually delay the 12V battery replacement, the vehicle may eventually not have enough power to start or restart.
If the 12V battery is too low to turn on the vehicle or open the doors, follow the instructions in
Jump Starting
the 12V Battery on page 195.
For more information on the battery system, see Battery
Information on page 156.
(VCFRONT_a192)
Electrical system power reduced
Vehicle may shut down
unexpectedly
The electrical system cannot maintain the voltage
required to support all vehicle features.
If you drive the vehicle while this alert is present, certain
features may be disabled or function at a reduced level due to the low voltage. It is also possible the vehicle will
shut down unexpectedly.
Try turning off non-critical features, like seat heaters or
cabin fans, to help the vehicle maintain electrical power
for as long as possible.
Eliminating or reducing usage of non-critical features
may allow the vehicle to reach its destination without
shutting down, although this is not guaranteed.
Schedule service before your next planned drive. The vehicle may shut down unexpectedly or may not restart without service.
(VCSEC_a221)
Air pressure below
recommendation for tires
Check pressure and refill air as
needed
This alert does NOT indicate that there is a flat tire.
The tire pressure monitoring system (TPMS) has detected that the air pressure in one or more of your
tires is at least 20% lower than the recommended cold tire pressure. This recommended pressure should be displayed on the Tire and Loading information label.
See Maintaining Tire Pressures on page 164 for detailed
information on how to keep the tires properly
inflated.
This alert may appear in cold weather because the tire pressure decreases when cold.

For more information on tire pressure and inflation, see
Tire Care and Maintenance on page 164.
(VCSEC_a228)
Air pressure in tires very low
PULL OVER SAFELY - Check for