Mazda 3 2020 Owner's Manual page 352

When Driving
i-ACTIVSENSE
To assure the correct operation of the
SBS-RC, heed the following cautions.
Do not apply a sticker to a rear radar
and rear camera. Otherwise, the rear
radar and rear camera may not be
able to detect vehicles or
obstructions which could result in an
accident.
Do not disassemble a rear radar and
rear camera.
If cracks or damage caused by flying
gravel or debris is visible around a
rear radar and rear camera, stop
using the SBS-RC system
immediately and have your vehicle
inspected by an expert repairer (we
recommend an Authorised Mazda
Repairer). 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 Brake
Support [Rear Crossing] (SBS-RC)
System Operation on page 4-197.
Consult an expert repairer (we
recommend an Authorised Mazda
Repairer) for rear bumper
replacement.
Do not modify the suspension:
If the vehicle height or inclination is
changed, the SBS-RC system may not
operate correctly because it cannot
detect obstructions correctly.
4-194
Do not apply a strong force to a rear
radar and rear camera:
When washing the vehicle, do not
spray highly pressurised water against a
rear radar and rear camera, or rub it
strongly. In addition, do not hit the rear
bumper forcefully when loading and
unloading cargo. Otherwise, the
sensors may not detect obstructions
correctly which could cause the
SBS-RC system to not operate
normally, or it could operate
unnecessarily.
NOTE
The SBS-RC system will operate

under the following conditions.
The engine is running.

The shift lever (manual

transmission vehicle) or the
selector lever (automatic
transmission vehicle) is in the R
(reverse) position.
i-ACTIVSENSE warning indication/

warning light is not displayed in the
multi-information display.
The vehicle speed is under about

10 km/h (6 mph).
The vehicle speed of an

approaching vehicle is about 3
km/h (2 mph) or faster.
The SBS-R is not turned off.

The DSC is not malfunctioning.

In the following cases, the

i-ACTIVSENSE warning indication/
warning light turns on and operation
of the system is stopped. If the
i-ACTIVSENSE warning indication/
warning light remains illuminated,
have the vehicle inspected at an
expert repairer (we recommend an
Authorised Mazda Repairer) as soon
as possible.
Some problem with the system

including the SBS-RC system.