Mazda 3 2019 Owner's Manual page 298

When Driving
i-ACTIVSENSE
The obstruction is soft such as a

hanging curtain or snow stuck to a
vehicle.
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.
Driving on a steep slope.

Wheel blocks.

4-158
Hanging curtains, gate poles such as

at toll gates and railroad crossing.
When traveling near objects such as

foliage, barriers, vehicles, walls, and
fences along a road.
When driving off-road in areas where

there is grass and forage.
When passing through low gates,

narrow gates, car washing machines,
and tunnels.
A trailer is connected.

A bright light source such as sunlight

hits the rear camera.
The surroundings are dark.

An exterior accessory such as a

bicycle carrier is installed around the
rear sonar.
(Manual transmission)

If the vehicle is stopped by the SBS-R
operation and the clutch pedal is not
depressed, the engine stops.
When the system operates, the user is

notified by the multi-information
display.
The collision warning beep sounds

intermittently while the SBS-R brake is
operating.
If the vehicle is stopped by the SBS-R

operation and the brake pedal is not
depressed, displaying in meter
"Emergency Braking Activated. Depress
Brake Pedal to Hold Stop", after about
2 seconds and the SBS-R brake is
automatically released.