Subaru Legacy 2021 Owner's Manual page 449

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! Trailer safety chains
WARNING
Always use safety chains between
your vehicle and the trailer. Towing
trailer without safety chains could
create a traffic safety hazard if the
trailer separates from the hitch due
to coupling damage or hitch ball
damage.
In case the trailer hitch connector or hitch
ball should break or become discon-
nected, the trailer could get loose and
create a traffic safety hazard.
For safety, always connect the towing
vehicle and trailer with trailer safety
chains. Two chains should be used in
total, one to the right side and the other to
the left side trailer tongue. Pass the chains
crossing each other under the trailer
tongue to prevent the trailer from dropping
onto the ground in case the trailer tongue
should disconnect from the hitch ball.
Allow sufficient slack in the chains taking
tight turn situations into account; however,
be careful not to let them drag on the
ground.
! Side mirrors
After hitching a trailer to your vehicle,
check that the standard side mirrors
provide a good rearward field of view
without significant blind spots. If significant
blind spots occur with the vehicle's stan-
dard side mirrors, use towing mirrors that
conform with Federal, state/province and/
or other applicable regulations.
! Trailer lights
CAUTION
Direct splicing or other improper
connection of trailer lights may
damage your vehicle's electrical
system and cause a malfunction of
your vehicle's lighting system.
Trailer Towing (Outback)
Connection of trailer lights to your vehicle's
electrical system requires modifications to
the vehicle's lighting circuit to increase its
capacity and accommodate wiring
changes. To ensure the trailer lights are
connected properly, please consult your
SUBARU dealer. Check for proper opera-
tion of the turn signals and the stop lights
each time you connect a trailer to your
vehicle.
! Tires
WARNING
Never tow a trailer when the tempor-
ary spare tire is used. The temporary
spare tire is not designed to sustain
the towing load. Use of the tempor-
ary spare tire when towing can result
in failure of the spare tire and/or less
stability of the vehicle.
Make sure that all the tires on your vehicle
are properly inflated. Refer to "Tires"
FP536.
Trailer tire condition, size, load rating and
proper inflation pressure should be in
accordance with the trailer manufacturer's
specifications.
In the event your vehicle gets a flat tire
when towing a trailer, ask a commercial
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