
2. If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds, and turn the circuit
breaker ON again. Then try reconnecting the Wall Connector to the vehicle.3.
If the issue persists, have an electrician make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4.
Once your electrician has completed all work and restored power to the Wall Connector, try charging again by reconnecting the Wall Connector to the vehicle.
5.
If the issue persists, the Wall Connector requires service.
For more information, see the installation guide for your Wall Connector.
CC_a026
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds, and turn the circuit
breaker ON again. Then try reconnecting the Wall Connector to the vehicle.
3.
If the issue persists, have an electrician make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4.
Once your electrician has completed all work and restored power to the Wall Connector, try charging again by reconnecting the Wall Connector to the vehicle.
5.
If the issue persists, the Wall Connector requires service.
For more information, see the installation guide for your Wall Connector.
CC_a027
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
Troubleshooting Alerts
241Troubleshooting

An internal issue was detected by the Wall Connector.1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds, and turn the circuit
breaker ON again. Then try reconnecting the Wall Connector to the vehicle.
3.
If the issue persists, have an electrician make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4.
Once your electrician has completed all work and restored power to the Wall Connector, try charging again by
reconnecting the Wall Connector to the vehicle.
5.
If the issue persists, the Wall Connector requires service.
For more information, see the installation guide for your Wall Connector.
CC_a028
Unable to charge - Incorrect switch setting
Wall Connector rotary switch must be adjusted
What this alert means:
Incorrect rotary switch setting.
What to do:
Have your electrician adjust the Wall Connector

This can sometimes be caused by a hardware issue specific to the external charging equipment, which prevents the
charging equipment from switching power to the vehicle on or
off when requested. It could also occur due to
another condition
affecting the external charging equipment, the power source it is connected to, or your vehicle
itself.
What to do:
This alert is usually specific to external charging equipment and power sources and does not typically indicate an
issue with your vehicle that can be resolved by scheduling service.
Try charging with multiple, different types of charging equipment.
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

The electrical system cannot maintain the voltage required to support all vehicle features.
If this alert is present while you are driving, it is possible your vehicle will shut down unexpectedly.
If this alert is present when your vehicle is in Park or when it first wakes, it is possible your vehicle may not have
adequate electrical power to start driving. A separate vehicle alert may be present to indicate that condition.
What to do:
It is recommended that you eliminate or reduce your use of any non-essential features. This can help your vehicle
maintain adequate electrical power for essential functions.
If this alert remains active, schedule service immediately. Without service, your vehicle may shut down unexpectedly
or may not restart.
VCFRONT_a182
Schedule service to replace low voltage battery
Software will not update until battery is replaced
What this alert means:
The low voltage battery is showing degraded performance and needs to be replaced. Until the low voltage battery is
replaced, vehicle software updates will not complete.
What to do:
It is recommended that you have the low voltage battery replaced at your earliest convenient opportunity.
You can schedule service via your Tesla Mobile App, or with an independent service provider that offers low voltage
battery replacement for your vehicle. Please note that independent service provider options may vary, based on your
vehicle configuration and your location.
If the low voltage battery does not have enough electrical power to turn on your vehicle or open the doors, follow the instructions in
Jump Starting on page 225.
For more information on the battery system, see High Voltage Battery Information on page 156.
VCFRONT_a191
Electrical system power reduced
Vehicle shutting down
What this alert means:
The low voltage battery cannot provide the electrical support necessary to drive or continue driving. Your vehicle is shutting down to preserve energy for essential functions other than driving.
Your vehicle cannot be driven or continue driving while this condition continues.
What to do:
If this alert is present while you are driving, your vehicle needs to come to a stop immediately. It is recommended
that you:

When this alert is present, the electrical system cannot maintain the voltage required to support all vehicle features. Many vehicle functions may no longer work.
It is possible your vehicle may lose all electrical power. If this occurs, you can still use the manual door releases to exit the vehicle if necessary. For more information, see
Opening Doors from the Interior on page 14.
This alert may be present due to various vehicle conditions. For more information and further recommended actions,
check for other active vehicle alerts.
If this alert remains present, it is recommended that you schedule service immediately. Without service, your vehicle
may not drive, may shut down unexpectedly, or may not restart.
VCFRONT_a192
Electrical system is unable to support all features
Switching off features to conserve energy
What this alert means:
The electrical system cannot support all vehicle features. Your vehicle is shutting down nonessential features to preserve energy for essential functions.
If you are driving when this alert is present, it is possible your vehicle may shut down unexpectedly. It is also possible
that your vehicle will not restart once parked.
Nonessential features may be unavailable, including seat heaters, cabin climate control, and in-vehicle entertainment.
This is expected behavior intended to help your vehicle maintain adequate electrical power for essential functions,
including the ability to operate headlights, windows and doors, hazard lights, and the front trunk (frunk).
It is possible your vehicle may lose all electrical power. If this occurs, you can still use the manual door releases to exit the vehicle if necessary. For more information, see
Opening Doors from the Interior on page 14.
What to do:
This alert may be present due to various vehicle conditions. For more information and further recommended actions,
check for other active vehicle alerts.
VCFRONT_a216
Vehicle may not restart - Service is required
Electrical system issue detected
What this alert means:
An abnormally large and sustained power draw while driving or Supercharging / DC Fast Charging has made your
vehicle

vehicle certification: 206
lane assist: 108
lane change, automatic: 87
Lane Departure Avoidance: 108
Lap Timer: 69
LATCH child seats, installing: 34
license plate bracket: 202
lifting: 189
lights: 53, 54, 55
hazard warning: 55
headlights after exit: 54
turn signals: 54
load limits: 206
location tracking: 142
locking: 14
lug nut covers: 179
lumbar adjustment: 25
M
maintenance: 166, 167, 176, 183, 187, 188
cleaning: 183
daily checks: 166
fluid replacement intervals: 167
monthly checks: 166
replacing wiper blades: 187
service intervals: 166
tires: 176
washer fluid, topping up: 187
washer jets, cleaning: 188
map orientation: 142
map updates: 147
mats: 186
media: 148, 151
settings: 148
sources, show and hide: 148
mileage upon delivery: 283
mirrors: 49
mobile app: 140
mobile app access: 140
Mobile Connector: 155, 158
description: 155
using: 158
modifications: 190
motor specifications: 210
My Apps: 8
my car does what?: 151
myQ: 134
programming and using: 134
N
naming your vehicle: 9
Navigate on Autopilot: 90
NHTSA, contacting: 285
O
Obstacle-Aware Acceleration: 111
occupancy sensor, front passenger: 40
occupant classification: 42
odometer: 71
Off-Peak Charging: 163
offset from speed limit: 114
Online Routing: 146
overhang dimensions: 208
overtake acceleration: 80
Owner Information, about: 280
P
Park Assist: 65
parking brake: 62
parking, using Autopark: 100
parking, using Summon: 102
parts replacement: 190
passenger detection: 40
passenger detection, front: 40
pedestrian warning: 73
personal data, erasing: 9
phone: 10, 122
authenticating as a key: 10
using: 122
phone app: 123
phone key: 10, 13
adding as a key: 13
removing as a key: 13
PIN: 46
PIN to Drive: 127
Post-drive Cooling (Track Mode): 69
power: 61
gained from regenerative braking: 61
power cycling: 50
power socket: 23
power windows: 16, 204
powering on and off: 50
Preconditioning: 163
Proposition 65: 283
public charging stations: 155
R
radio: 148, 151
Index