Mazda 3 Sedan 2020 Owner's Manual page 316

When Driving
i-ACTIVSENSE
NOTE
The vehicle posture changes

depending on the accelerator pedal,
brake pedal and steering wheel
operations, which could make it
difficult for the system to recognize
an obstruction, or it could facilitate
unnecessary detection. In such cases,
the SBS-R may or may not operate.
The SBS-R system will operate under

the following conditions.
The engine is running for 3 seconds

or more.
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 between

about 2 to 8 km/h (2 to 4 mph).
The SBS-R is not turned off.

The DSC is not malfunctioning.

In the following cases, the rear

ultrasonic sensor and rear camera
cannot detect obstructions and the
SBS-R may not operate.
The height of the obstruction is

low such as low walls or trucks
with low loading platforms.
The height of the obstruction is

high such as trucks with high
loading platforms.
The obstruction is small.

The obstruction is thin such as a

signpost.
The surface of the obstruction is

not pointed vertically relative to
the vehicle.
The obstruction is soft such as a

hanging curtain or snow stuck to a
vehicle.
4-162
The obstruction is shaped

irregularly.
The obstruction is extremely close.

In the following cases, the rear

ultrasonic sensor and rear camera
cannot detect obstructions correctly
and the SBS-R may not operate.
Something is stuck on the bumper

near a rear ultrasonic sensor.
The brake or accelerator pedal is

operated.
There is another obstruction near

one obstruction.
During inclement weather such as

rain, fog and snow.
High or low humidity.

High or low temperatures

Strong winds.

The path of travel is not flat.

Heavy luggage is loaded in the

luggage compartment or on the
rear seat.
Objects such as a wireless antenna,

fog light, or illuminated license
plate is installed near a rear
ultrasonic sensor.
The orientation of a rear ultrasonic

sensor has deviated for reasons
such as a collision.
The vehicle is affected by other

sound waves such as the horn,
engine noise, ultrasonic sensor of
another vehicle.
In the following cases, a rear

ultrasonic sensor and rear camera
may detect something as a target
obstruction which could cause the
SBS-R system to operate.
There is a steep slope or bump.

There are wheel blocks or a

curbstone.
There are hanging curtains, gate

poles such as at toll gates and
railroad crossing.