Subaru Forester: Connecting a trailer / 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 standard
side mirrors, use towing mirrors that
conform with Federal, state/province and/
or other applicable regulations.
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...
Other information:
This light illuminates with the parking
brake applied while the ignition switch is
in the “ON” position. It turns off when the
parking brake is fully released.
WARNING
Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working properly...
If the light illuminates steadily while driving
or does not turn off after the engine starts,
an emission control system malfunction
has been detected.
You should have your vehicle checked by
an authorized SUBARU dealer immediately.
NOTE
This light also illuminates when the fuel
filler cap is not tightened until it clicks...