sensor MAZDA MODEL 3 HATCHBACK 2018 (in English) Owner's Guide

Radar sensors (rear)
The radar sensors (rear) function by detecting the radio waves reflected off a vehicle
approaching from the rear or an obstruction sent from the radar sensors. The following
systems also use the radar sensors (rear).
Blind Spot Monitoring (BSM)
Rear Cross Traffic Alert (RCTA)
The radar sensors (rear) are installed inside the rear bumper, one each on the left and right
sides.
Refer to Radar Sensors (Rear) on page 4-139.
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NOTE
The BSM will operate when all of the following conditions are met:
The ignition is switched ON.
The BSM OFF indicator light in the instrument cluster is turned off.
The vehicle speed is about 10 km/h (6.3 mph) or faster.
The BSM will not operate under the following circumstances.
The vehicle speed falls below about 10 km/h (6.3 mph) even though the BSM OFF
switch indicator light is turned off.
The shift lever (manual transa xle)/selector lever (automatic transaxle) is shifted to
reverse (R) and the vehicle is reversing.
The turning radius is small (making a sharp turn, turning at intersections).
In the following cases, the BSM warning indication/warning light turns on and operation
of the system is stopped. If the BSM 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 BSM warning indicator lights is detected.
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). Remove any snow, ice or mud on the rear bumper.
Driving on snow-covered roads for long periods.
The temperature near the radar sensors (rear) becomes extremely hot due to driving for
long periods on slopes during the summer.
The battery voltage has decreased.
Under the following conditions, the radar sensors (rear) cannot detect target objects or it
may be difficult to detect them.
A vehicle is in the detection area at the rear in an adjacent driving lane but it does not
approach. The BSM determines the condition based on radar detection data.
A vehicle is traveling alongside your vehicle at nearly the same speed for an extended
period of time.
Vehicles approaching in the opposite direction.
A vehicle in an adjacent driving lane is attempting to pass your vehicle.
A vehicle is in an adjacent lane on a road with extremely wide driving lanes. The
detection area of the radar sensors (rear) is set at the road width of expressways.
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In the following case, the flashing of the BSM warning indicator light, and the activation
of the warning sound and the warning screen indicator display may not occur or they may
be delayed.
A vehicle makes a lane change from a driving lane two lanes over to an adjacent lane.
Driving on steep slopes.
Crossing the summit of a hill or mountain pass.
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.
The walls at the entrance and exits of tunnels,
turnouts.
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.
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.
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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 Rear Cross Traffic Alert function when the shift lever (manual
transaxle) or the selector lever (automatic transaxle) is shifted to the reverse (R) position.
Refer to Rear Cross Traffic Alert (RCTA) on page 4-98.
▼ 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.
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Stop signs
NOTE
Speed limit signs
When the vehicle speed is about 1 km/h (0.6 mph) or faster, the speed limit sign is
displayed when any one of the following conditions are met.
The Forward Sensing Camera (FSC) recognizes a speed limit sign as a sign targeted for
your vehicle and the vehicle passes it.
The speed limit sign stored in the navigation system is read (if the Forward Sensing
Camera (FSC) does not recognize a speed limit sign).
In the following cases, display of the speed limit sign stops.
The Forward Sensing Camera (FSC) recognizes the speed limit sign and the vehicle is
driven for a certain distance after passing the sign.
Each sensor determines that the vehicle has changed direction of travel.
The Forward Sensing Camera (FSC) recognizes a new speed limit sign which differs
from the previous one (displays the new speed limit sign).
The speed limit sign stored in the navigation system is not read within a certain period
of time (if the Forward Sensing Camera (FSC) does not recognize a speed limit sign,
the speed limit sign stored in the navigation system is displayed).
The vehicle speed exceeds the displayed speed limit sign by 30 km/h (19 mph) or more
after a certain period of time has elapsed since the speed limit sign was displayed.
(Except when there is information for the speed limit sign in the navigation system)
Do not enter signs
A do not enter sign is displayed when all of the following conditions are met.
The vehicle speed is about 60 km/h (37 mph) or slower.
The Forward Sensing Camera (FSC) recognizes a do not enter sign as a sign targeted
for your vehicle and the vehicle passes it.
When the Forward Sensing Camera (FSC) recognizes the do not enter sign and a certain
period of time has elapsed since the vehicle passed the sign, display of the do not enter
sign stops.
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Distance Recognition Support System (DRSS)*
The DRSS measures the distance between your vehicle and a vehicle ahead using a radar
sensor (front) while the vehicle speed is about 30 km/h (19 mph ) or faster, and if your
vehicle approaches a vehicle ahead more closely than what is ap propriate for maintaining
distance between the vehicles according to the vehicle speed, a notification in the active
driving display is indicated to advise you to keep a safe dista nce from the vehicle ahead.
WA R N I N G
Do not rely completely on the DRSS and always drive carefully:
The ability to detect a vehicle ahead is limite d depending on the type of vehicle ahead, the
weather conditions, and the traffic conditions. Therefore, if the accelerator and brake pedals
are not operated correctly it could lead to an accident. Always verify the safety of the
surrounding area and depress the brake pedal or accelerator pedal while keeping a safer
distance from vehicles ahead or on-coming vehicles.
NOTE
The DRSS operates when all of the following conditions are met:
The ignition is switched ON.
The DRSS is on.
The selector lever is in a position other than reverse (R).
The vehicle speed is 30 km/h or faster (19 mph or faster).
The objects which activate the system are 4-wheeled vehicles.
The DRSS may also operate in the presence of motorcycles and bicycles.
The DRSS may not operate normally under the following conditions:
The Dynamic Stability Control (DSC) has a malfunction.
The vehicle ahead is traveling at an extremely slow speed.
The system does not operate with the following objects:
Vehicles approaching in the opposite direction.
Stationary objects (stopped vehicles, obstructions)
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(With rear view monitor)
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 vehicle. 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.
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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 radar sensors (rear) cannot detect target objects or it
may be difficult to detect them.
The vehicle speed when reversing is about 15 km/h (9 mph) or faster.
The radar sensor (rear) 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.)
Your vehicle
A vehicle is approaching directly from the rear of your vehicle.
Your vehicle
The vehicle is parked on a slant.
Your vehicle
Directly after the Blind Spot Monitoring (BSM) system becomes operable using the
personalization feature.
Radio wave interference from a radar sensor equipped on a nearby parked vehicle.
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Mazda Radar Cruise Control (MRCC)*
The MRCC system is designed to maintain headway control*1 with a vehicle ahead
according to your vehicle's speed using a radar sensor (front) to detect the distance to the
vehicle ahead and a preset vehicle speed without you having to use the accelerator or brake
pedals.
*1 Headway Control: Control of the distance between your vehicle and the vehicle ahead
detected by the MRCC system.
Additionally, if your vehicle starts closing in on the vehicle ahead such as if the vehicle
ahead brakes suddenly, a warning sound and a warning indication in the display are
activated simultaneously to alert you to maintain a sufficient distance between the vehicles.
Also refer to the following before using the MRCC.
Radar sensor (front) (page 4-136)
WA R N I N G
Do not rely completely on the MRCC:
The MRCC system has detection limitations depending on the type of vehicle ahead and its
conditions, the weather conditions, and the road conditions. Additionally, the system may be
unable to decelerate sufficiently to avoid hitting the vehicle ahead if the vehicle ahead applies
the brakes suddenly or another vehicle cuts into the driving lane, which could result in an
accident.
Always drive carefully and verify the surrounding conditions and depress the brake pedal or
accelerator pedal while keeping a safer distance from vehicles ahead or on-coming vehicles.
Do not use the MRCC system in the following locations, using the MRCC system at the
following locations may result in an unexpected accident:
 General roads other than highways (Driving under these conditions using the MRCC system
is not possible.)
 Roads with sharp curves and where vehicle tr affic is heavy and there is insufficient space
between vehicles.
 Roads where frequent and repeti tive acceleration and deceleration occur (Driving under
these conditions using the MRCC system is not possible).
 When entering and exiting interchanges, servic e areas, and parking areas of highways (If
you exit a highway while headway control is in use, the vehicle ahead will no longer be
tracked and your vehicle may accelerate to the set speed).
 Slippery roads such as ice or snow-bound roads (Tires could sp in causing you to lose vehicle
control, or the stop hold control may not operate.)
 Long, descending slopes (to maintain distan ce between vehicles, the system automatically
and continuously applies the brakes which could result in the loss of brake power.)
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The Smart City Brake Support (SCBS)
has operated.
When traveling on a downslope for a
long period of time.
There is a problem with the system.
The radar sensor (front) cannot detect
target objects (during rain, fog, snow or
other inclement weather conditions, or
when the radiator grille is dirty).
The vehicle speed decreases to less than
25 km (16 mph).
(Manual transaxle)
The shift lever is shifted to neutral (N)
for a certain period of time.
The clutch is depressed for a certain
period of time.
The engine stalls.
Resuming control
If the MRCC system is canceled, you can
resume control at the previously set speed
by pressing the RES switch and after all of
the operation conditions have been met.
NOTE
If the set speed is not indicated in the
display, the control does not resume even
if the RES switch is pressed.
Turning off the system
Press the OFF/CAN switch two times
while the MRCC system is operating to
switch off the system.
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