Brake booster
The brake booster uses engine manifold vacuum to assist braking force. Do not turn off the engine while driving because that will turn off the brake booster, resulting in poor braking power.
The brakes will continue to work even when the brake booster completely stops functioning. If this happens, however, you will have to depress the pedal much harder than normal and the braking distance will increase.
See also:
Revised 2.5-liter Boxer Engine with New 6-Speed Manual or CVT
The 2010 Subaru Legacy 2.5i models are powered by a revised 2.5-liter
4-cylinder Boxer engine, teamed for the first time to a new 6-speed manual
transmission or the available new Lineartronic™ CVT ...
Fuel
...
Trailer hitch (Outback — if equipped)
WARNING
● Never exceed the maximum weight specified for the trailer hitch. Exceeding
the maximum weight could cause an accident resulting in serious personal injuries.
Permissible trailer w ...