2016-2026 Mazda Mx-5 SUV When Driving -> Blind Spot Monitoring (BSM)* User Manual
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When Driving -> Blind Spot Monitoring (BSM)* for Your Mazda Mx-5 SUV Fourth Generation (2016-2026)

When Driving  
i-ACTIVSENSE  
Blind Spot Monitoring (BSM)*  
The BSM is designed to assist the driver in checking the area to the rear of the vehicle on  
both sides during lane changes by alerting the driver to the presence of vehicles approaching  
from the rear in an adjacent lane.  
The BSM detects vehicles approaching from the rear while traveling in the forward  
direction at a speed of 10 km/h (6.3 mph) or faster and turns on the BSM warning lights  
equipped on the door mirrors depending on the conditions. If the turn signal lever is  
operated to signal a lane change in the direction in which the BSM warning light is  
illuminated, the system warns the driver of a vehicle in the detection area by flashing the  
BSM warning light and activating a beep sound.  
The detection area on this system covers the driving lanes on both sides of the vehicle and  
from the rear part of the doors to about 50 m (164 ft) behind the vehicle.  
Your vehicle  
Detection areas  
WARNING  
Always check the surrounding area visually before making an actual lane change:  
The system is only designed to assist you in checking for vehicles at your rear when making a  
lane change. Due to certain limitations with the operation of this system, the BSM warning  
light may not ꢀash or it might be delayed even though a vehicle is in an adjacent driving lane.  
Always make it your responsibility as a driver to check the rear.  
*Some models.  
4-87  
When Driving  
i-ACTIVSENSE  
NOTE  
The BSM will operate when all of the following conditions are met:  
The ignition is switched ON.  
The BSM switch is pressed and 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  
indicator light is turned off.  
The shift lever (manual transmission)/selector lever (automatic transmission) is shifted  
to reverse (R) and the vehicle is reversing.  
In the following cases, the BSM OFF indicator light turns on and operation of the system  
is stopped. If the 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 BSM warning 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.  
In the following cases, the activation of the BSM warning lights and the warning beep  
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.  
The turning radius is small (making a sharp turn, turning at intersections).  
4-88  
When Driving  
i-ACTIVSENSE  
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 lights may turn on in reaction to stationary objects on the road or the  
roadside such as guardrails, tunnels, sidewalls, and parked vehicles.  
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 light may flash or the warning beep 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. Otherwise, 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 lights equipped on the door mirrors.  
Snow or ice is adhering to the door mirrors.  
The door glass is fogged or covered in snow, frost or dirt.  
The system switches to the Rear Cross Traffic Alert (RCTA) function when the shift lever  
(manual transmission) or the selector lever (automatic transmission) is shifted to the  
reverse (R) position.  
Refer to Rear Cross Traffic Alert (RCTA) on page 4-98.  
4-89  
When Driving  
i-ACTIVSENSE  
Blind Spot Monitoring (BSM) Warning Lights/Blind Spot Monitoring (BSM)  
▼
Warning Beep  
The BSM or Rear Cross Traffic Alert (RCTA) system notifies the driver of the presence of  
vehicles in adjacent lanes to the rear of your vehicle using the BSM warning lights and the  
warning beep while the systems are operational.  
BSM warning lights  
The BSM warning lights are equipped on the left and right door mirrors. The warning lights  
turn on when a vehicle approaching from the rear in an adjacent lane is detected.  
When the ignition is switched ON, the malfunction warning light turns on momentarily and  
then turns off after a few seconds.  
Forward driving (BSM system operation)  
The BSM system detects vehicles approaching from the rear and turns on the BSM warning  
lights equipped on the door mirrors according to the conditions. Additionally, while a BSM  
warning light is illuminated, if the turn signal lever is operated to signal a turn in the  
direction in which the BSM warning light is illuminated, the BSM warning light flashes.  
Reverse driving (Rear Cross Traffic Alert (RCTA) system operation)  
The Rear Cross Traffic Alert (RCTA) system detects vehicles approaching from the left and  
right of your vehicle and flashes the BSM warning lights.  
Function for cancelling illumination dimmer  
If the BSM warning lights turn on when the parking lights are turned on, the brightness of  
the BSM warning lights is dimmed.  
If the BSM warning 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 cancel the dimmer and increase the brightness of BSM warning lights when they  
turn on.  
Refer to Dashboard Illumination on page 4-16.  
4-90  
When Driving  
i-ACTIVSENSE  
BSM warning beep  
The BSM warning beep is activated simultaneously with the flashing of a BSM warning  
light.  
Canceling Operation of Blind Spot  
▼
Monitoring (BSM)  
The BSM system can be set to inoperable.  
Refer to Personalization Features on page  
9-9.  
When the BSM is set to inoperable, the  
BSM and Rear Cross Traffic Alert  
(RCTA) systems are turned off and the  
BSM OFF indicator light in the instrument  
cluster turns on.  
NOTE  
When the ignition is switched OFF, the  
system status before it was turned off is  
maintained. For example, if the ignition is  
switched OFF while the BSM and Rear  
Cross Traffic Alert (RCTA) systems are  
operational, the BSM and Rear Cross  
Traffic Alert (RCTA) systems remain  
operational the next time the ignition is  
switched ON.  
4-91  

Related Topics

When Driving
Start/Stop Engine Ignition Switch Starting the Engine Turning the Engine Off Instrument Cluster and Display Meters and Gauges Multi-information Display and INFO Switch* Warning/Indicator Lights Manual Transmission Operation Manual Transmission Shift Pattern Automatic Transmission Automatic Transmission Controls Shift-Lock System Transmission Ranges Manual Shift Mode Direct Mode* Driving Tips Switches and Controls Lighting Control Turn and Lane-Change Signals Windshield Wipers and Washer Rear Window Defogger Horn Hazard Warning Flasher HomeLink Wireless Control System* Brake Brake System Hill Launch Assist (HLA)* ABS/TCS/DSC Antilock Brake System (ABS) Traction Control System (TCS) Dynamic Stability Control (DSC) Fuel Economy Monitor Drive Selection Power Steering i-ACTIVSENSE* Adaptive Front Lighting System (AFS)* High Beam Control System (HBC)* Lane Departure Warning System (LDWS)* Rear Cross Traffic Alert (RCTA)* Smart City Brake Support (SCBS)* Forward Sensing Camera (FSC)* Radar Sensors (Rear)* Cruise Control Rear View Monitor

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