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Towing and Accessories
Model X detects a faulty electrical
connection for the trailer lights. Some, or
all, trailer lights may not be functioning.
Pull over as soon as safety permits and
inspect the trailer lights for faulty cabling
or connections. If the issues are resolved
and the red icon still persists, turn Trailer
Mode off and on again.
NOTE: In situations where Model X detects a heavy load,
it assumes that a trailer is connected and automatically
engages Trailer Mode. A message displays on the
instrument panel informing you that Trailer Mode has
been engaged. When Trailer Mode is entered
automatically due to detection of a heavy load, you can
change the Trailer Mode setting only by stopping Model
X, engaging Park or Neutral, then manually applying the
parking brake using the touchscreen (Controls > Safety
> Parking Brake).
Some Autopilot features (Autosteer, Summon, Lane
Assist, etc.), as well as rear parking sensor functionality,
may not be available when Trailer Mode is enabled. In
addition, some features may operate differently. For
example:
• Traffic-Aware Cruise Control increases the following
distance from the car in front of you.
• The air suspension system will not make speed-based
adjustments from Standard to Low.
• The air suspension system does not automatically
raise ride height based on saved locations.
• Side collision warnings are active but automatic
steering interventions are disabled.
• The braking force provided by Automatic Emergency
Braking (see
Collision Avoidance Assist on page
is significantly limited.
WARNING: Do not rely on Model X to detect the
trailer and automatically engage Trailer Mode.
Always check that Trailer Mode is engaged before
towing a trailer.
WARNING: Under no circumstances should you
exit Trailer Mode when towing a trailer. Doing so
can cause serious injury and/or death.
WARNING: Do not use the suspension setting to
appropriately match the height of the hitch with
the height of the trailer.
Trailer Brakes
When towing a loaded trailer that weighs more than 450
kg, Tesla recommends that the trailer be equipped with
its own brake system adequate for the weight of the
trailer. Ensure compliance with local regulations. A brake
controller must be purchased separately, and the
required 4-pin pigtail connector can be ordered from
Tesla Service.
Follow these steps to connect a brake controller:
86
1. Connect the wiring on the brake controller to the
appropriate locations on the 4-pin pigtail connector.
1 - Brake control output to trailer
2 - Ground
3 - Brake On Signal
127)
4 - Low Voltage Power (20A)
2. Remove the cover located under the dashboard in
the driver's side foot well.
MODEL X Owner's Manual
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