2021 TESLA MODEL Y ECU

About the Security System
If Model Y does not detect an authenticated phone, key
fob, or key card and a locked door or trunk is opened, an alarm sounds and the headlights and turn signals
flash.

To deactivate the alarm, press any button on the mobile
app or tap your key card or key fob against the card reader located
approximately one third the way up of
the driver

CAUTION: Do not rely on Sentry Mode to protect
Model Y from all possible security threats. While it
may help deter some threats, no security system
can prevent all attacks.
CAUTION: Sentry Mode may not trigger the
security alarm in all situations involving damage to
the vehicle. The security alarm depends upon
multiple factors to be triggered and may not
detect all impacts to the vehicle or may not trigger
the alarm in all cases.
Standby, Alert, and Alarm States
When in Sentry Mode, Model Y may go through three
states depending on its surroundings

1. Place the curved part of the lug nut cover tool (located in the glovebox for some vehicles, or you can use a small allen wrench) into the lowered
perimeter around the middle of the lug nut cover.
NOTE: The lug nut cover tool can also be purchased
at an auto parts store or through online retailers.
2.
Twist the lug nut cover tool so that the end of the curved part is facing away from the Tesla "T".
3.
Firmly pull the lug nut tool away from the wheel until the lug nut cover is released.
To install the lug nut cover:
1.
Align the lug nut cover into position.
2.
Push firmly on the lug nut cover until it fully snaps
into place.
CAUTION: Make sure the lug nut cover is fully
secure before driving to prevent it from falling
off.
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
driver

Removing the Maintenance Panel
To check fluid levels, remove the maintenance panel:
1.
Open the hood.
2.
Pull the maintenance panel upward to release the clips that hold it in place.
3.
If checking the Battery coolant, remove the cabin intake trim panel by pulling it upwards to release the clips that hold it in place.
CAUTION: The maintenance panel protects the
front trunk from water. When re-attaching, make
sure it is fully seated.
Checking Battery Coolant
Your Battery coolant should not need to be replaced for
the life of your vehicle under most circumstances. However, if the quantity of
fluid in the cooling system
drops below the recommended level, the
touchscreen
displays a warning message. Stop driving Model Y as
soon as safety permits and contact Tesla.
Fluid Level Check
DO NOT REMOVE THE FILLER CAP AND DO NOT ADD
FLUID. Doing so can result in damage not covered by
the warranty.
Do Not Top Up Battery Coolant
WARNING: Battery coolant can be hazardous and
can irritate eyes and skin. Under no circumstances
should you remove the filler cap and/or add
coolant. If the touchscreen warns you that the fluid

level is low, contact Tesla immediately.
To maximize the performance and life of the Battery, the
cooling system uses a
specific mixture of G-48 ethylene-
glycol coolant (HOAT). Contact Tesla for more
specific

information about the coolant.
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.
A red brake indicator on the touchscreen
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.
Topping Up the Brake Fluid
Do not top up your brake fluid. The following
instructions are provided for information purposes and future reference only:
1.
Clean the filler cap before removing it to prevent dirt
from entering the reservoir.
2.
Unscrew the cap and remove it.
3.
Top up the reservoir to the MAX mark using the
appropriate brake
fluid.
4.
Replace the filler cap, ensuring it is fully secured.
WARNING: Only use new fluid from a sealed air-
tight container. Never use previously used fluid or
fluid from a previously opened container

4.
While tilting the top of the license plate bracket away
from the bumper (to prevent adhering it to the wrong
location), align the bottom center of the license plate bracket with the middle of the grille as shown.
NOTE: Be as precise as possible when aligning the
bracket because you will be unable to reposition it once adhered to the bumper.
5.
While correctly aligned, move the top of the bracket
against the bumper and apply pressure so that it is held in place by the adhesive.
6. Remove the remaining tape from the sides of the
bracket then press the entire bracket
firmly against
the bumper, ensuring the bracket is held in place by
all adhesive areas.
7.
Once the bracket is securely mounted, use the four supplied screws to attach your license plate to the bracket (tighten to 3 Nm/2.2 ft-lbs).Parts and Accessories
180MODEL Y Owner

2.
Release the rear tow eye cover by pressing firmly on
its top right perimeter until it pivots inward, then
gently pulling the raised section toward you.
NOTE: Vehicles equipped with a hitch receiver cannot
be pulled from the rear tow eye. Use the tow bar or
hitch receiver only to pull the vehicle to a safe
location, such as onto a
flatbed truck. Do not
transport the vehicle with wheels on the ground.
3.
Fully insert the tow eye into the opening, then turn it
counter-clockwise until securely fastened.
4.
Attach the winch cable to the tow eye.
CAUTION: Before pulling, make sure the tow
eye is securely tightened.
5.
Activate Transport Mode.
6.
Pull Model Y slowly onto the flatbed truck.
Secure the Tires
The vehicle

(CC_a003)
Unable to charge - Wall Connector GFCI tripped
Disconnect and retry or use different equipment
What this alert means:
Ground fault. Current is leaking through an unsafe path. Possible Line to ground or Neutral to ground fault.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If the problem persists, turn OFF
the circuit breaker servicing the Wall Connector, wait 10 seconds, turn the circuit breaker ON again, then try
reconnecting the Wall Connector to the vehicle. If the problem persists, contact Tesla.
(CC_a004)
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, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall Connector and try charging
again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment through your Mobile App.
(CC_a005)
Unable to charge - Wall Connector GFCI tripped
Disconnect and retry or use different equipment
What this alert means:
Ground fault. Current is leaking through an unsafe path. Possible Line to ground or Neutral to ground fault.
What to do:
Troubleshooting Alerts
213Consumer Information

(CC_a010)
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, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and torqued according to the
instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall Connector and try charging
again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment through your Mobile App.
(CC_a011)
Unable to charge - Wall Connector too hot
Let Wall Connector cool and try again
What this alert means:
Over temperature protection (latchoff).
What to do:
Make sure the Wall Connector is not covered by anything and that there is no heat source nearby. If the problem
persists in normal ambient temperatures (under 100