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Vehicle Dynamics and Driver Assist Systems
May 2017
Reverse Automatic Braking (RAB)
Introduction
Optionally available with some 2017 MY Subaru vehicles, the Reverse Automatic Braking (RAB)
system is a driver assist system designed to help avoid collisions or reduce collision damage
when reversing the vehicle. If a wall or other obstacle is detected in the reversing direction,
the system will notify the driver with progressive audible warnings, reduce engine power, and
activate the vehicle’s brakes automatically.
Reverse Automatic Braking (RAB) - Sonar Sensors
WARNINGS:
• Reverse Automatic Braking is not a system intended to replace the driver’s
responsibility to check surrounding areas for vehicles, obstacles or to avoid a collision.
• The driver is responsible for driving safely. Always be sure to check the surroundings
visually when reversing the vehicle.
• Since the system operation has various limitations, the warning sound or automatic
braking may be delayed or may not operate at all even when an obstacle is present in
the reversing direction.
• The system is not designed to detect people (including children), animals or other
moving objects.
• Depending on the vehicle condition or the surrounding environment, the sonar sensor’s
ability to detect objects may become unstable.
* For a full listing of RAB warnings and cautions, consult the applicable Owner’s Manual
and/or Service Manual.
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