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 position is for parking the vehicle and
starting the engine. In this position, the
transmission is mechanically locked to
prevent the vehicle from rolling freely.
When you park the vehicle, first apply the
parking brake firmly, then shift into the “P”
position...
Scheduled maintenance service precautions
Adhere strictly to the standard Normal Maintenance Schedule provided that your vehicle is routinely operated under typical, moderate driving conditions. However, you should transition to the Maintenance Under Severe Usage Conditions framework if your daily driving routine frequently involves any of the following specific operating environments:
A: You repeatedly drive short distances covering less than 5 miles (8 km) under normal ambient temperatures, or short trips of less than 10 miles (16 km) in freezing sub-zero weather conditions...