Subaru Legacy BN/BS (2015-2019) Owners Manual: Operating conditions

•  In the following cases, the Reverse Automatic braking system will not operate. Promptly contact a SUBARU dealer to have the system inspected.

•  The EyeSight warning indicator is illuminated
•  The RAB warning indicator is illuminated

•  In the following cases, the Reverse Automatic braking system cannot be operated.

•  The (EyeSight Temporary Stop indicator: White) is illuminated, and the messages c o r r e s p o n d ing t o t h e EyeSight temporary stop are displayed on the multi information display. For details, refer to the Owner's Manual supplement for the EyeSight system.
•  The Reverse Automatic Braking system OFF indicator is illuminated

•  In the following cases, the system may not be able to properly detect an obstacle. Promptly contact a SUBARU dealer to have the system inspected.

•  A sticker, paint, or a chemical is applied to the rear bumper near the sonar sensor
•  The rear bumper is modified
•  The rear bumper has been removed and attached
•  The ground clearance is changed due to the vehicle's loading condition or modification
•  Ice, snow or mud is adhered to the rear bumper near the sonar sensor
•  The rear bumper is exposed to strong impact, or the rear bumper is deformed

•  On a steep hill, the system's automatic braking ability will be reduced.
•  The system is designed to avoid collisions by automatic hard braking when the vehicle's reversing speed is less than approximately 3 mph (5 km/h). However, the system does not guarantee that the vehicle will be able to avoid collisions in any situation.
•  If the vehicle is reversed at an extremely slow speed, the driver's operation may be prioritized.

  In this case, automatic braking will not operate.

•  The system may not be able to detect the following objects

•  Sharp or thin objects such as poles, fences and ropes which may not reflect the sound wave emitted from the sonar sensor
•  Objects that are too close to the rear bumper when the select lever is set to the "R" position
•  Objects with a surface which may not reflect the sound wave emitted from the sonar sensor such as a chain link fence

•  Objects the system is not designed to detect

•  Pedestrians
•  Moving objects including moving vehicles
•  Objects which absorbs sound waves such as cloth or snow
•  Objects whose surface has a diagonal angle
•  Objects that are low to the ground such as parking blocks
•  Objects that are high above the ground such as objects hanging from above

•  When reversing the vehicle, the system may not be able to properly detect objects or may cause a system malfunction if the following conditions exist High frequency sound from other sources are nearby

•  Horn sound from another vehicle
•  Engine sound from other vehicles
•  Sound of an air brake
•  Vehicle detection equipment or a sonar from another vehicle
•  A sound wave with a frequency similar to the vehicle's system is transmitted near by
•  A vehicle equipped with the same system is reversing toward your reversing direction

Weather conditions

•  Extremely high or extremely low temperatures in which the area near the sonar sensor becomes too hot or too cold to operate
•  The rear bumper near the sonar sensors are exposed to heavy rain or a significant amount of water
•  Fog, snow or sandstorm, etc.
•  Air is moving rapidly such as when a strong wind is blowing

Parts attached to the rear bumper near the sonar sensor

• Commercial electronic parts (fog light, fender pole, radio antenna) or commercial attachment parts (trailer hitch, bicycle carrier, bumper guard) are attached
•  Parts that emit high frequency sound, such as a horn or speaker, are attached

Vehicle conditions

•  The vehicle is significantly inclined
•  The ground clearance is significantly reduced due to the vehicle's loading condition, etc.
•  When the sonar sensor is misaligned due to a collision or an accident

Surrounding environment

•  A cloth banner, flag, hanging branch or railroad crossing bars are present in the reversing direction
•  When reversing on a gravel or grassy area
•  When reversing in an area where objects or walls are adjacent to the vehicle such as narrow tunnels, narrow bridges, narrow roads or narrow garages
•  Wheel track or hole is present in the ground of the reversing direction
•  When reversing over a drainage cover (grating cover)
•  The path of the reversing direction is inclined such as on a steep uphill
•  A curb is present in the reversing direction
•  When reversing downhill