Subaru Forester 2018 Manual page 26

- When the detected object is something other than a vehicle, motorcycle,
bicycle or pedestrian
• A domestic animal or other animal (a dog or deer, etc.)
• A guardrail, telephone pole, tree, fence or wall, etc.
- Even if the obstacle is a motorcycle, bicycle or pedestrian, depending on
the brightness of the surroundings as well as the relative movement, and
aspect or angle of the object, there may be cases when the system can-
not detect it.
- When the system determines that operation by the driver (based on
accelerator pedal operation, braking, steering wheel angle, etc.) is
intended as evasive action
- Vehicle maintenance status (brake systems, tire wear, tire pressure,
whether a temporary spare tire is being used, etc.)
- When towing a trailer or another vehicle, etc.
- When the brakes are cold due to outside temperature being low or just
after starting the engine.
- When the brakes are overheated on downhill grades (braking perfor-
mance is reduced)
- When driving in rain or after washing the vehicle (the brakes are wet and
braking performance is reduced)
- Recognition conditions of the stereo camera
In particular, the function may be unable to stop the vehicle or may not
activate in the following cases.
• Bad weather (for example heavy rain, a blizzard or thick fog)
• When visibility is poor due to sand, smoke or water vapor blowing in the
wind, or when the front vision is obscured due to water splashes, snow,
dirt or dust stir up generated by the vehicle in front or oncoming traffic
• When driving at night or in a tunnel without the headlights on
• When driving at night or in a tunnel when there is a vehicle in front that
does not have its taillights on
• When approaching a motorcycle, bicycle or pedestrian at night
• When ambient light is poor in the evening or early morning
• When a vehicle, motorcycle, bicycle or pedestrian is outside the area
illuminated by the headlights
• When affected by strong light from the front (for example, sunlight at
dawn, sunset or headlight beams, etc.)
• When the windshield has become fogged, scratched, or snow, dirt, dust
or frost has adhered to it, or it is otherwise affected.
• When fluid has not been fully wiped off the windshield during or after
washer use
• When the target cannot be correctly recognized because the stereo
camera's view is obstructed by water droplets from rain or the window
washer, or by the wiper blades.
• When the stereo camera's field of view is obstructed (for example by a
canoe on the roof of the vehicle)
Pre-Collision Braking System
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