2014 MAZDA MODEL 3 HATCHBACK brake sensor

*Some models.4–1
4When Driving
Information concerning safe driving and stopping.


Start/Stop Engine ................................ 4-4
Ignition Switch ............................... 4-4
Starting the Engine ......................... 4-5
Turning the Engine Off ................ 4-10
Instrument Cluster and Display ...... 4-12
Meters and Gauges ....................... 4-12
Active Driving Display
* ............... 4-19
Warning/Indicator Lights ............. 4-21
Transaxle ............................................ 4-27
Manual Transaxle Operation ........ 4-27
Automatic Transaxle Controls ...... 4-30
Switches and Controls ...................... 4-41
Lighting Control ........................... 4-41
High Beam Control System
(HBC)
* ......................................... 4-48
Fog Lights* ................................... 4-51
Turn and Lane-Change Signals ...... 4-51
Windshield Wipers and Washer ...... 4-52
Rear Window Wiper and
Washer
* ........................................ 4-56
Rear Window Defroster ............... 4-56
Horn ............................................. 4-58
Hazard Warning Flasher ............... 4-58
HomeLink Wireless Control
System
* ......................................... 4-59
Forward Sensing Camera ................. 4-63
Forward Sensing Camera
* ............ 4-63
Radar Sensor ..................................... 4-65
Radar Sensor ................................ 4-65 Brake .................................................. 4-68
Brake System ............................... 4-68
Hill Launch Assist (HLA) ............ 4-70
Smart City Brake Support
(SCBS)
* ........................................ 4-72
ABS/TCS/DSC ................................... 4-79
Antilock Brake System (ABS) ...... 4-79
Traction Control System (TCS) ...... 4-80
Dynamic Stability Control
(DSC) ........................................... 4-81
i-ELOOP ............................................ 4-83
i-ELOOP
* ..................................... 4-83
Fuel Economy Monitor ..................... 4-86
Fuel Economy Monitor
* ............... 4-86
Drive Selection ................................... 4-88
Drive Selection
* ........................... 4-88
Power Steering................................... 4-90
Power Steering ............................. 4-90
Mazda Radar Cruise Control
(MRCC) ............................................. 4-91
Mazda Radar Cruise Control
(MRCC) ....................................... 4-91
Cruise Control ................................. 4-100
Cruise Control
* ........................... 4-100
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4–67
When Driving
Radar Sensor
NOTE
 


y In the following cases, the radar sensor may not be able to detect vehicles ahead or
obstructions.
 


y The rear surface of a vehicle ahead does not refl ect radio waves effectively, such as
an unloaded trailer or an automobile with a loading platform covered by a soft top,
vehicles with a hard plastic tailgate, and round-shaped vehicles.
 


y Vehicles ahead with low vehicle height and thus less area for refl ecting radio waves.



y Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its
tires and onto your windshield.
 


y The trunk/luggage compartment is loaded with heavy objects or the rear passenger
seats are occupied.
 


y Ice, snow, or soiling is on the front surface of the front emblem.



y During inclement weather such as rain, snow, or sand storms.



y When driving near facilities or objects emitting strong radio waves.




y In the following cases, the radar sensor may detect vehicles in the opposite lane or
surrounding obstructions, or it may not be able to detect vehicles ahead or obstructions.
 


y The beginning and end of a curve.



y Roads with continuous curves.



y Narrow lane roads due to road construction or lane closures.



y The vehicle ahead enters the radar sensor's blind spot.



y The vehicle ahead is running abnormally due to accident or vehicle damage. 



y Roads with repeated up and down slopes



y Driving on poor roads or unpaved roads.



y The distance between your vehicle and the vehicle ahead is extremely short.



y A vehicle suddenly comes close such as by cutting into the lane.




y To prevent incorrect operation of the system, use tires of the same specifi ed size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with signifi cantly different wear patterns or tire pressures on the same vehicle. (Including
the temporary spare tire)
 


y If the battery power is weak, the system may not operate correctly.



y When driving on roads with little traffi c and few vehicles ahead or obstructions for the
radar sensor to detect, Forward Obstruction Warning/Smart City Brake Support (FOW/
SCBS) indicator light temporarily illuminates, however, this does not indicate a problem.
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*Some models.4–72
When Driving
Brake
Smart City Brake Support (SCBS) *
The Smart City Brake Support (SCBS) system is designed to reduce damage in the
event of a collision by operating the brake control (SCBS brake) when the system's laser
sensor detects a vehicle ahead and determines that a collision with the vehicle ahead is
unavoidable. It may also be possible to avoid a collision if the relative speed between your
vehicle and the vehicle ahead is less than about 15 km/h (9.3 mph).
In addition, when the driver depresses the brake pedal while the system is in the operation
range at about 4 to 30 km/h (2 to 18 mph), the brakes are applied fi rmly and quickly to
assist. (Brake Assist (SCBS brake assist))
Laser sensor
WARNING
Do not rely on the Smart City Brake Support System (SCBS) as a substitute for safe
driving:
The Smart City Brake Support (SCBS) system cannot compensate for unsafe and reckless
driving, excessive speed, tailgating (following another vehicle too closely), and driving on
slippery roads such as wet, snowy, and icy roads (reduced tire friction and road contact
because of water on the road surface). You can still have an accident.

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4–73
When Driving
Brake
Do not rely completely on the Smart City Brake Support (SCBS) system:
 


¾ The Smart City Brake Support (SCBS) system is only designed to reduce damage in the
event of a collision. Over reliance on the system leading to the accelerator pedal or
brake pedal being mistakenly operated could result in an accident.
 


¾ The Smart City Brake Support (SCBS) is a system which operates in response to a
vehicle ahead. The system may not be able to detect or react to 2-wheeled vehicles or
pedestrians.
 


¾ The laser sensor for the Smart City Brake Support (SCBS) system is installed near the
rearview mirror. To assure the correct operation of the Smart City Brake Support
(SCBS), heed the following cautions.
 

¾
 Do not apply stickers to the surface of the windshield near the laser sensor
(including transparent stickers). Otherwise, the laser sensor may not be able to
detect vehicles or obstructions ahead which could result in an accident.
 

¾
 Do not disassemble the laser sensor.


¾
 If cracks or damage caused by fl ying gravel or debris is visible near the laser sensor,
stop using the Smart City Brake Support (SCBS) system immediately and have your
vehicle inspected by an Authorized Mazda Dealer. If the vehicle continues to be
driven with cracks or scratch marks left on the windshield near the laser sensor, the
system may operate unnecessarily and cause an unexpected accident.
  Refer to Stopping The Smart City Brake Support (SCBS) System Operation on page
4-78 .
 

¾
 When replacing the windshield wipers or windshield, consult an Authorized Mazda
Dealer.

Do not modify the suspension:
If the vehicle height or inclination is changed, the system will not be able to correctly
detect vehicles or obstructions ahead. This will result in the Smart City Brake Support
(SCBS) system not operating normally or mistakenly operating, which could cause a
serious accident.

Turn off the Smart City Brake Support (SCBS) when the vehicle is running on a chassis
roller or being towed:
Turn off the Smart City Brake Support (SCBS) system to prevent mistaken operation when
the vehicle is running on a chassis roller or being towed. See the next page on how to turn
off the Smart City Brake Support (SCBS).
Refer to Stopping The Smart City Brake Support (SCBS) System Operation on page 4-78 .
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4–74
When Driving
Brake
CAUTION
 


¾ When driving off -road in areas where there is grass or forage, it is recommended that the
Smart City Brake Support (SCBS) system be turned off .




¾ Always use tires for all wheels that are of the specifi ed size, and the same manufacturer,
brand, and tread pattern. In addition, do not use tires with signifi cantly diff erent wear
patterns on the same vehicle as the Smart City Brake Support (SCBS) system may not
operate normally.
 


¾ The laser sensor includes a function for detecting a soiled windshield and informing the
driver, however, depending on the conditions, it may not detect plastic shopping bags, ice
or snow on the windshield. In such cases, the system cannot accurately determine a vehicle
or obstruction ahead and may not be able to operate normally. Always drive carefully and
pay attention to the road ahead.
NOTE
 


y The Smart City Brake Support (SCBS) system will operate under the following
conditions.
 


y The engine is running.



y The Smart City Brake Support (SCBS) indicator light does not illuminate.



y The vehicle speed is between about 4 to 30 km/h (2 to 18 mph).



y The Smart City Brake Support (SCBS) system is not turned off.



y The DSC operation is not turned off using the DSC OFF switch.



y The DSC is not malfunctioning.



y The driver is not deliberately performing driving operations (accelerator pedal,
steering wheel, and braking operations).
 


y The Smart City Brake Support (SCBS) detects a vehicle ahead by emitting a near-infrared
laser beam and receiving the beam refl ected off the refl ector of the vehicle ahead, and
then using it for the measurement. Consequently, the Smart City Brake Support (SCBS)
may not operate under the following conditions:
 


y Refl ection of the laser is poor due to the shape of the vehicle ahead.



y The vehicle ahead is signifi cantly dirty.



y Under bad weather condition, such as rain, fog and snow.



y The window washer is being used or the windshield wipers are not used when it's
raining.
 


y The windshield is dirty.



y The steering wheel is turned completely left or right, or the vehicle is accelerated
rapidly and comes close to the vehicle ahead.
 


y Trucks with low loading platforms, vehicles traveling at extremely low speeds, and
vehicles with a high profi le.
 


y Vehicles with certain shapes such as a vehicle carrier.
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*Some models.4–75
When Driving
Brake
 


y Under the following conditions, the Smart City Brake Support (SCBS) system may not
operate normally.
 


y Heavy luggage is loaded in the luggage compartment or on the rear seat.



y When there is the possibility of partial contact with a vehicle or obstruction ahead.



y When driving on continuously curving roads, entering and exiting curves, and unstable
driving due to a vehicle accident or breakdown in a driving lane.
 


y Elongated luggage or cargo is loaded onto installed roof rails and covers the laser
sensor.
 


y Exhaust gas from the vehicle in front, sand, snow, and water vapor rising from
manholes and grating, and water splashed into the air.
 


y When towing a malfunctioning vehicle.




y In the following cases, the laser sensor may inadvertently determine that there is a
vehicle ahead and the Smart City Brake Support (SCBS) system may operate.
 


y Objects on the road at the entrance to a curve.



y Vehicles passing in the opposite lane while making a curve.



y Metal objects, bumps, or protruding objects on the road.



y When passing through a toll gate.



y When passing under a vinyl curtain or fl ag.



y Plastic objects such as pylons.



y Two-wheeled vehicles, pedestrians, animals or standing trees.




y If the vehicle is driven with some of the tires having signifi cant wear, the system may not
operate correctly. If the tires are returned to a normal state and the Smart City Brake
Support (SCBS) indicator light still illuminates, have your vehicle inspected by an
Authorized Mazda Dealer.
 


y When the system operates, the user is notifi ed by the fl ashing warning light and the active
driving display * . 


y The indicator light turns on when the system has a malfunction.
 Refer to Warning Lights on page 4-22 .
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4–76
When Driving
Brake
Laser Sensor Handling
The Smart City Brake Support (SCBS) laser sensor is installed at the top of the windshield
near the rearview mirror.
Always keep the surface of the windshield around the laser sensor clean to assure proper
operation of the Smart City Brake Support (SCBS) system.
WARNING
As there is the possibility of eye damage occurring from the laser, always heed the
following precautions:
 


¾ Never remove the sensor.



¾ A removed sensor will not meet the conditions for a class 1M laser under the IEC
60825-1 specifi cation and therefore eye safety cannot be assured.
 


¾ Do not peer into the sensor using optical instruments with a magnifi cation function
such as magnifying glasses, and microscopic and objective lenses within a distance of
100 mm (3.94 in) from the sensor.
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4–77
When Driving
Brake
Laser sensor radiation data
Maximum average power: 45 mW
Pulse duration: 33 ns
Wavelength: 905 nm
Divergence angle (horizontal×vertical): 28 degrees×12 degrees
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