Mazda CX-5 2021 Owner's Manual page 333

Smart City Brake Support [Reverse] (SCBS R)
The SCBS R is a system which is designed to reduce damage in the event of a collision by
operating the brake control (SCBS brake) when the system's ultrasonic sensors detect an
obstruction at the rear of the vehicle while driving at a speed of about 2 to 8 km/h (2 to 4
mph) and the system determines that a collision is unavoidable.
Reverse
WARNING
Do not rely completely on the SCBS R system:
The SCBS R system is only designed to reduce damage in the event of a collision. Over
reliance on the system leading to the accelerator pedal or brake pedal being mistakenly
operated could result in an accident.
To assure the correct operation of the SCBS R, heed the following cautions.
Do not apply a sticker to an ultrasonic sensor (rear) (including transparent stickers).
Otherwise, the ultrasonic sensor (rear) may not be able to detect vehicles or obstructions
which could result in an accident.
Do not disassemble an ultrasonic sensor (rear).
If cracks or damage caused by flying gravel or debris is visible around an ultrasonic
sensor (rear), stop using the SCBS R system immediately and have your vehicle inspected
by an Authorized Mazda Dealer. If the vehicle continues to be driven with cracks or
scratch marks left around an ultrasonic sensor, the system may operate unnecessarily
and cause an unexpected accident.
Refer to Stopping the Smart City Brake Support [Reverse] (SCBS R) System Operation on
page 4-180.
Consult an Authorized Mazda Dealer for rear bumper replacement.
Do not modify the suspension:
If the vehicle height or inclination is changed, the SCBS R system may not operate correctly
because it cannot detect obstructions correctly.
Ultrasonic sensor (rear)
When Driving
i-ACTIVSENSE
*
4-177
*Some models.