Tesla MODEL X 2019 Owner's Manual page 99

Towing and Accessories
Warning: You must use the Model X trailer
hitch when towing a trailer. Never attempt
to attach a different type of trailer hitch.
Note: Always attach safety chains when
towing. Cross the chains under the trailer
tongue and attach to the trailer eyelets to
ensure the security of the trailer load.
To install the trailer hitch:
1. Remove the dust cover from the hitch
housing.
Note: Newer versions of Model X have two
push clips that secure the dust cover to
the vehicle. To open, use a sharp object,
such as a flat screwdriver, to carefully pry
the clips open. Remove the dust cover.
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2. Insert the key into the locking cylinder on
the hitch, and turn the cylinder so the top
of the key is aligned with the "unlocked"
position.
3. Pull the locking cylinder out of the
adapter approximately 0.5 cm, and turn
clockwise until the red marking on the
cylinder aligns with the white dot.
Warning: Be careful when turning the
locking cylinder. If it does not lock
into the "Open Position", it
automatically retracts into its original
"Closed Position" and can pinch your
fingers.
4. Firmly grasp the hitch from the bottom
and align the triangular-shaped guides at
the sides of the hitch with the
corresponding cutouts in the hitch
housing.
Note: Do not grasp the locking cylinder
because it needs to rotate freely.
5. Push the hitch into the hitch housing until
the locking cylinder rotates approximately
120° counter-clockwise and automatically
locks into the "Closed Position". The green
area on the locking cylinder (above the
white arrow) aligns with the white dot on
the housing.
6. Visually check to confirm that the hitch is
fully inserted into the housing. Try pulling
down on the hitch. The hitch should not
drop when you pull down.
Note: If the hitch does not lock into the
housing, it falls out when you pull down
on it.
7. Turn the key so the arrows align with the
"locked" marking on the locking cylinder.
Model X Owner's Manual