2023 TESLA MODEL Y ECU

4. Power off the vehicle by navigating to Controls >
Safety > Power Off on the touchscreen.
5.
Disconnect the first responder loop by sliding the red
locking tab toward you and pressing the black tab.
6.
With a 10mm socket, loosen the nut that secures the
negative (-) terminal clamp to the negative (-) post on the lead-acid battery. Release the terminal clamp from the negative (-) post.
7.
With a 10mm socket, release the terminal cover and loosen the nut that secures the positive (+) terminal
clamp to the positive (+) post on the lead-acid
battery. Release the terminal clamp from the positive
(+) post and cover the terminal clamp with a dry rag.
CAUTION: Do not allow the positive (+)
terminal clamp to contact nearby components
like the lead-acid battery hold down bracket or
A/C cooling lines.
8.
Unplug the vent tube hose from the negative (-)
terminal side of the lead-acid battery.
9.
Loosen the nut on the battery hold down on the top of the lead-acid battery with a 10mm socket. To
release the battery hold down, unhook and slide the
strap back. If needed, tilt the battery hold down
backward so it does not slip into the vehicle.
10.
Using the battery handle, carefully remove the lead- acid battery, taking care not to touch or damage the surrounding components.
Maintenance Service Intervals
180MODEL Y Owner

WARNING: When lifting out the lead-acid
battery, stand in front of the vehicle and use
proper lifting technique. The lead-acid battery
weighs approximately 25 lb (12 kg). Failure to
do so may cause serious injury.
11.
Inspect the new lead-acid battery to ensure it has a
red plug in the casing on the positive (+) terminal
side. If the new lead-acid battery does not have a red plug, use a small trim tool to transfer the red plug
from the old battery to the new one.
CAUTION: Dispose of the old lead-acid battery
according to local laws, such as dropping it off

at a battery recycling facility. Keep the lead-
acid battery upright and place it on a towel or
piece of cardboard when transporting it.
Installation:
1. Carefully maneuver the new lead-acid battery into
place, taking care not to touch or damage nearby
components.2.
Install the lead-acid battery hold down and use a 10mm socket to tighten the nut that secures it to the 12V battery. Torque the nut to 6 Nm (4.4 ft-lb).
3.
Reconnect the first responder loop.
4.
Remove the protective caps from the positive (+) and negative (-) posts on the new low voltage lead-acid battery.
5.
Connect the positive (+) terminal by positioning the
clamp over the positive (+) post. Using a 10mm socket, torque the nut to 6 Nm (4.4 ft-lb).
Maintenance Service Intervals
181Maintenance

d. Route the hose so that it is secured by the tab.e.
Use a 10mm socket to install the bolt that attaches the washer
fluid reservoir neck to the underhood
storage unit. Torque the bolt to 5 Nm (3.7 ft-lb).
11.
Replace the underhood apron by aligning the clips into their openings in the front trunk. Press down to lock them in place. The clips make an audible clicking
sound when secured.
12.
Close the front trunk. If an alert to replace the low-
voltage battery was previously shown on the
touchscreen, ensure the alert no longer appears.
Maintenance Service Intervals
183Maintenance

d. Remove the HEPA filter assembly from the vehicle
by tilting the rear edge of the
filter assembly up
past the brake
fluid reservoir. Lift the filter
assembly out of the vehicle, taking care not to
bump into or damage other components.
4.
Power off the vehicle by navigating to Controls >
Safety > Power Off on the touchscreen.
5.
Disconnect the first responder loop by sliding the red
locking tab toward you and pressing the black tab.
6.
With a 10mm socket, loosen the nut that secures the
negative (-) terminal clamp to the negative (-) post on the lead-acid battery. Release the terminal clamp from the negative (-) post.
7.
With a 10mm socket, release the terminal cover and
loosen the nut that secures the positive (+) terminal
clamp to the positive (+) post on the lead-acid battery. Release the terminal clamp from the positive
(+) post and cover the terminal clamp with a dry rag.
CAUTION: Do not allow the positive (+)
terminal clamp to contact nearby components
like the lead-acid battery hold down bracket or
A/C cooling lines.
8.
Unplug the vent tube hose from the negative (-)
terminal side of the lead-acid battery.
Parts and Accessories
200MODEL Y Owner

9.
Loosen the nut on the battery hold down on the top of the lead-acid battery with a 10mm socket. To
release the battery hold down, unhook and slide the
strap back. If needed, tilt the battery hold down
backward so it does not slip into the vehicle.
10.
Using the battery handle, carefully remove the lead- acid battery, taking care not to touch or damage the surrounding components.
WARNING: When lifting out the lead-acid
battery, stand in front of the vehicle and use
proper lifting technique. The lead-acid battery
weighs approximately 25 lb (12 kg). Failure to
do so may cause serious injury.
11.
Inspect the new lead-acid battery to ensure it has a
red plug in the casing on the positive (+) terminal
side. If the new lead-acid battery does not have a red plug, use a small trim tool to transfer the red plug
from the old battery to the new one.
CAUTION: Dispose of the old lead-acid battery
according to local laws, such as dropping it off

at a battery recycling facility. Keep the lead-
acid battery upright and place it on a towel or
piece of cardboard when transporting it.
Installation:
1.
Carefully maneuver the new lead-acid battery into
place, taking care not to touch or damage nearby
components.
2.
Install the lead-acid battery hold down and use a 10mm socket to tighten the nut that secures it to the 12V battery. Torque the nut to 6 Nm (4.4 ft-lb).
Parts and Accessories
201Maintenance

b.
With a 10mm socket, tighten the bolts (x2) and
torque them to 5 Nm (3.7 ft-lb).
c.
Ensure the O-ring on the washer tank neck is fully seated, then install the washer tank neck by inserting it into the washer tank.
d.
Route the hose so that it is secured by the tab.
e.
Use a 10mm socket to install the bolt that attaches
the washer
fluid reservoir neck to the underhood
storage unit. Torque the bolt to 5 Nm (3.7 ft-lb).
11.
Replace the underhood apron by aligning the clips into their openings in the front trunk. Press down to lock them in place. The clips make an audible clicking
sound when secured.
Parts and Accessories
203Maintenance

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
205Maintenance

1. Ensure Model Y is in Park.2.
Chock the tires or make sure Model Y is secure.
3.
Press and hold the brake pedal, then on the touchscreen, touch
Controls > Service > Towing. The
touchscreen displays a message reminding you how
to properly transport
Model Y.
4.
Press and hold the Transport Mode button until it
turns blue.
Model Y is now free-rolling and can slowly
be rolled (no faster than walking speed) or winched.
To cancel Transport Mode, shift Model Y into Park.
NOTE: If your vehicle is equipped with a lead-acid low
voltage battery (see
Jump Starting on page 227):
Transport Mode may cancel if
Model Y loses low voltage
power after Transport Mode is enabled.
CAUTION: If the electrical system is not working,
and you therefore cannot use the touchscreen to
activate Transport Mode, use self-loading dollies or
tire skates. Before doing so, always check the
manufacturer