Mazda 3 Sedan 2020 Owner's Manual page 272

When Driving
i-ACTIVSENSE
A vehicle approaching from the

rear left and right side of your
vehicle makes a right or left turn
directly in front of your vehicle.
A vehicle overtakes your vehicle

while it is stopped.
Your vehicle is in an area where

strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
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
Authorized Mazda Dealer as soon as
possible.
Some problem with the system

including the Blind Spot
Monitoring (BSM) warning
indicator lights has occurred.
A large deviation in the installation

position of a rear side radar sensor
on the vehicle has occurred.
There is a large accumulation of

snow or ice on the rear bumper
near a rear side radar sensor.
Driving on snow-covered roads for

long periods.
The temperature near the radar

sensors becomes extremely hot
due to driving for long periods on
slopes during the summer.
The battery voltage has decreased.

Under the following conditions, the

rear side radar sensor cannot detect
approaching vehicles or it might be
difficult to detect them, and the
system may not operate normally.
The vehicle speed when reversing

is about 15 km/h (9 mph) or
faster.
4-118
The rear side radar sensor

detection area is obstructed by a
nearby wall or parked vehicle.
(Reverse the vehicle to a position
where the radar sensor detection
area is no longer obstructed.)
1. Your vehicle
A vehicle is approaching directly

from the rear of your vehicle.
1. Your vehicle
The vehicle is parked at an angle.

1. Your vehicle
Directly after the RCTA system

becomes operable using the
personalization feature.
Radio wave interference from a

radar sensor equipped on a nearby
parked vehicle.