Page 220 of 608

•When there is a difference in the height between your driving lane and the adjacent
lane.
•Directly after the BSM system becomes operable by changing the setting.
•If the road width is extremely narrow, vehicles two lanes over may be detected. The
detection area of the radar sensors (rear) is set according to the road width of
expressways.
•The BSM warning indicator light may turn on and the vehicle detection screen may be
displayed in the display in reaction to stationary objects (guardrails, tunnels, sidewalls,
and parked vehicles) on the road or the roadside.
Objects such as guardrails and concrete walls
running alongside the vehicle. Places where the width between guardrails or
walls on each side of the vehicle narrows.
The walls at the entrance and exits of tunnels,
turnouts.
•A BSM warning indicator ligh
t may flash or the warning beep and the warning screen
indicator display may be activated several times when making a turn at a city
intersection.
•Turn off the BSM while pulling a trailer or while an accessory such as a bicycle carrier is
installed to the rear of the vehicle. Otherwis e, the radar’s radio waves will be blocked
causing the system to not operate normally.
•In the following cases, it may be difficult to view the illumination/flashing of the BSM
warning indicator lights equipped on the door mirrors.
•Snow or ice is adhering to the door mirrors.
•The front door glass is fogged or covered in snow, frost or dirt.
•The radar sensors (rear) of the BSM may be regulated under the radio wave related laws
of the country where the vehicle is driven. The sensors in this system are approved for use
in the U.S.A. (including territories), Canada, and Mexico. If a vehicle with a BSM is
driven in a country other than the U.S.A., Canada, or Mexico, the system has to be turned
off using the BSM OFF switch.
•The system switches to the Re ar Cross Traffic Alert function when the shift lever (manual
transaxle) or the selector lever (automatic tr ansaxle) is shifted to the reverse (R) position.
Refer to Rear Cross Traffic Alert (RCTA) on page 4-104.
When Driving
i-ACTIVSENSE
4-92
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 221 of 608

▼Blind Spot Monitoring (BSM) Warning Indicator Lights/Blind Spot
Monitoring
(BSM) Warning Beep
The BSM or Rear Cross Traffic Ale rt (RCTA) system notifies the driver of the presence of
vehicles in adjacent lanes or at the rear of the vehicle using the BSM warning indicator
light, the warning sound and the display indicator (vehicles wi th active driving display)
(BSM) while the systems are operational.
BSM warning indicator lights
The BSM warning indicator lights are equipped on the left and r ight door mirrors. The
warning indicator lights turn on when a vehicle approaching from the rear in an adjacent
lane is detected.
When the ignition is switched O N, the warning indicator light turns on momentarily and
then turns off after a few seconds.
Forward driving (BSM operation)
The BSM detects vehicles approaching from the rear and turns on the BSM warning
indicator lights equipped on the door mirrors according to the conditions. Additionally,
while a BSM warning indicator li ght is illuminated, if the turn signal lever is operated to
signal a turn in the direction in which the BSM warning indicat or light is illuminated, the
BSM warning indica tor light flashes.
Reverse driving (Rear Cross Traf fic Alert (RCTA) system operation)
The Rear Cross Traffic Alert (RCTA) system detects vehicles app roaching from the left and
right of your vehicle and flashes the BSM warning indicator lig hts.
When Driving
i-ACTIVSENSE
4-93
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 222 of 608

Function for cancelling illumination dimmer
If the BSM warning indicator lights turn on when the parking lights are turned on, the
brightness of the BSM warning indicator lights is dimmed.
If the BSM warning indicator lights are difficult to see due to glare from surrounding
brightness when traveling on snow-covered roads or under foggy conditions, press the
dimmer cancellation button to can cel the dimmer and increase the brightness of BSM
warning indicator lights when they turn on.
Refer to Dashboard Illumination on page 4-17.
Display indicator (Vehicles with active driving display)
The detected approaching vehicle and warning are displayed in t he active driving display
when the vehicle is moving forward (BSM operational).
The detected direction is displayed with a detection indicator (white) when an approaching
vehicle is detected. In addition , if the turn signal lever is o perated to signal a lane change
while the vehicle is detected, the display changes the color (a mber) of the warning indicator.
BSM warning beep
The BSM warning beep is activated simultaneously with the flash ing of a BSM warning
indicator light.
When Driving
i-ACTIVSENSE
4-94
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 225 of 608

Stop sign
WA R N I N G
Always check the traffic signs visually while driving.
The TSR helps prevent the driver from overlookin g traffic signs and provides support for safer
driving. Depending on the weath er conditions or problems with
traffic signs, a
traffic sign
may not be recognized or a traffic sign different from the actual traffic sign may be displayed.
Always make it your responsibility as a driver to check the actual
traffic signs. Otherwise, it
could result in an accident.
NOTE
•The TSR does not operate if there is a malf unction in the Forward Sensing Camera (FSC).
•Under the following conditions, the TSR may not operate normally.
•An object placed on the dashboard is reflected in the windshield and picked up by the
camera.
•Heavy luggage is loaded in the luggage compartment or on the rear seat and the
vehicle is tilted.
•The tire pressures are not adjusted to the specified pressure.
•Tires other than standard tires are equipped.
•The vehicle is driven on the ramp and surrounding area to or from a rest area or a
tollgate on a highway.
•When surrounding brightness suddenly changes such as when entering or exiting a
tunnel.
•The illumination of the headlights is weakened because of dirt or the optical axis is
deviated.
•The windshield is dirty or foggy.
•The windshield and camera are fogged (water droplets).
When Driving
i-ACTIVSENSE
4-97
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 226 of 608

•Strong light is directed at the front of the vehicle (such as backlight or high-beam
headlights of on-coming vehicles).
•The vehicle is making a sharp turn.
•Strong light reflects off the road.
•A traffic sign is in a position which makes it difficult to reflect the light from the
vehicle's headlights, such as when the vehicle is driven at night or in a tunnel.
•The vehicle is driven under weather conditions such as rain, fog, or snow.
•The stored map data for the navigation system is not current.
•A traffic sign is obscured by mud or snow.
•A traffic sign is concealed by trees or a vehicle.
•A traffic sign is partially shaded.
•A traffic sign is bent or warped.
•A traffic sign is too low or too high.
•A traffic sign is too bright or too da rk (including electronic traffic signs).
•A traffic sign is too big or too small.
•There is an object similar to the traffic sign being read (such as another traffic sign or
other signs resembling it).
•The TSR does not operate if the active dr iving display is set to non-display.
•The TSR can be set to inoperable.
Refer to Personalization Features on page 9-9.
▼Traffic Sign Display Indication
The following traffic signs are d
isplayed on the active driving display.
Speed limit signs
Do not enter signs
Stop signs
When Driving
i-ACTIVSENSE
4-98
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 231 of 608

▼Indication on Display
The DRSS operation status is indi
cated in the active driving display. Regarding
malfunctions, check the vehicle c onditions or have it inspected by an Authorized Mazda
Dealer according to the conte nt of the displayed message.
Refer to Warning/Indicator Lights on page 4-24.
NOTE
•When the ignition is sw itched off, the operation status be fore the system was turned off is
maintained. For example, if the ignition is switched off with the DRSS operable, the
system will be operable when the ignition is switched ON the next time.
•The DRSS can be turned on/off and the system's sensitivity can be changed.
Refer to Personalization Features on page 9-9.
Vehicle ahead
display
Distance-between-veh icles guidelines*1
Display Distance between vehicles guide-
lines
(During travel at about 40 km/h (25 mph) Distance between vehicles guide-
lines
(During travel at about 80 km/h (50 mph)
Illuminated in
amber
About 10 m (32 ft) or less About 20 m (65 ft) or less
*1 The distance between vehicles differs depending on vehicle spe ed.
When Driving
i-ACTIVSENSE
4-103
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 232 of 608

Rear Cross Traffic Alert (RCTA)*
The RCTA system is designed to assist the driver in checking the area to the rear of the
vehicle on both sides while the vehicle is reversing by alertin g the driver to the presence of
vehicles approaching the rear of the vehicle.
The RCTA system detects vehicles approaching from the rear left and right sides of the
vehicle, and the rear of the vehicle while the vehicle is being reversed out of a parking
space, and notifies the driver of possible danger using the Blind Spot Monitoring (BSM)
warning indicator lights and the warning buzzer.
Detection areas
Your vehicle
RCTA operation
1. The RCTA system operates when the shift lever (manual transax le) or the selector lever
(automatic transaxle) is shifted to the reverse (R) position.
2. If there is the possibility of a collision with an approaching vehicle, the Blind Spot
Monitoring (BSM) warning indicato r lights flashes and the warning beep is activated
simultaneously.
When Driving
i-ACTIVSENSE
4-104*Some models.
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14
Page 233 of 608

The RCTA warning indication in the rearview monitor also synchronizes with the Blind
Spot Monitoring (BSM) warning indicator light on the door mirro rs.
WA R N I N G
Always check the surrounding area visually before actually putting the vehicle in reverse:
The system is only designed to assist you in checking for vehicles at the rear when putting the
vehicle in reverse. Due to certain limitations with the operation of this system, the Blind Spot
Monitoring (BSM) warning indicator lights may not flash or it might be delayed even though
a vehicle is behind your vehicl e. Always make it your responsibility as a driver to check the
rear.
NOTE
•In the following cases, the Blind Spot Monitoring (BSM) OFF Indicator Light turns on
and operation of the system is stopped. If the Blind Spot Monitoring (BSM) OFF Indicator
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 radar sensor (rear) on the vehicle has
occurred.
•There is a large accumulation of snow or ice on the rear bumper near a radar sensor
(rear).
•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.
When Driving
i-ACTIVSENSE
4-105
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14