2015 MAZDA MODEL 3 4-DOOR 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 ...... 4-11 Meters and Gauges ....................... 4-11
Active Driving Display
* ............... 4-18
Warning/Indicator Lights ............. 4-20
Transaxle ............................................ 4-26 Manual Transaxle Operation ........ 4-26
Automatic Transaxle Controls ...... 4-29
Switches and Controls ...................... 4-40 Lighting Control ........................... 4-40
High Beam Control System
(HBC)
*.......................................... 4-47
Fog Lights* ................................... 4-50
Turn and Lane-Change Signals ...... 4-50
Windshield Wipers and Washer ...... 4-51
Rear Window Wiper and
Washer
*......................................... 4-55
Rear Window Defogger ............... 4-56
Horn ............................................. 4-57
Hazard Warning Flasher ............... 4-58
HomeLink Wireless Control
System
* ......................................... 4-58
Forward Sensing Camera ................. 4-62 Forward Sensing Camera
* ............ 4-62 Radar Sensor ..................................... 4-64
Radar Sensor ................................ 4-64
Brake .................................................. 4-67 Brake System ............................... 4-67
Hill Launch Assist (HLA) ............ 4-69
Smart City Brake Support
(SCBS)
* ........................................ 4-71
ABS/TCS/DSC ................................... 4-78
Antilock Brake System (ABS) ...... 4-78
Traction Control System (TCS) ...... 4-79
Dynamic Stability Control
(DSC) ........................................... 4-80
i-ELOOP ............................................ 4-82 i-ELOOP
* ..................................... 4-82
Fuel Economy Monitor ..................... 4-85 Fuel Economy Monitor
* ............... 4-85
Drive Selection ................................... 4-87 Drive Selection
* ........................... 4-87
Power Steering................................... 4-89 Power Steering ............................. 4-89
Mazda Radar Cruise Control
(MRCC) ............................................. 4-90 Mazda Radar Cruise Control
(MRCC)
* ...................................... 4-90
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4–66
When Driving
Radar Sensor
NOTE
 y In the following cases, the radar sensor may not be able to detect vehic\
les 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 oppo\
site 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 damag\
e.  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) warning light (amber) temporarily illuminates, however, this does not indicate a
problem.
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*Some models.4–71
When Driving
Brake
Smart City Brake Support (SCBS) *
The Smart City Brake Support (SCBS) system is designed to reduce damag\
e in the event
of a collision by operating the brake control (SCBS brake) when the sy\
stem's laser sensor
detects a vehicle ahead and determines that a collision with a vehicle a\
head is unavoidable.
It may also be possible to avoid a collision if the relative speed betwe\
en your vehicle and a
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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*Some models.4–74
When Driving
Brake
 y Under the following conditions, the Smart City Brake Support (SCBS) sy\
stem may not
operate normally.
 y Heavy luggage is loaded in the luggage compartment or on the rear seat. y If there is the possibility of partial contact with a vehicle ahead. y When driving on continuously curving roads, and entering and exiting exits. 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 tha\
t 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 Vehicle is driven with some of the tires having signifi cant wear.
 y When the system operates, the user is notifi ed by the fl ashing Smart City Brake Support
(SCBS) indicator light (red) and the active driving display * . y The Smart City Brake Support (SCBS) warning light (amber) turns on w\
hen the system
has a malfunction.
 Refer to Warning Lights on page 4-21 .
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4–75
When Driving
Brake
Laser Sensor Handling
The Smart City Brake Support (SCBS) laser sensor is installed at the t\
op 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:


4–76
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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*Some models.4–90
When Driving
Mazda Radar Cruise Control (MRCC)
Mazda Radar Cruise Control (MRCC) *
The Mazda Radar Cruise Control (MRCC) system is designed to maintain headway control *1
according to the vehicle speed using a radar sensor to detect the distan\
ce to a vehicle ahead,
and by presetting the vehicle speed between 30 km/h (19 mph) and 145 k\
m/h (90 mph), the
driver is freed from having to constantly use the accelerator or brake p\
edals.
*1 Headway Control: Control of the distance between your vehicle and the ve\
hicle ahead detected by the Mazda Radar Cruise Control (MRCC) system.
Additionally, if your vehicle starts closing in on the vehicle ahead because, for ex\
ample, the
vehicle ahead brakes suddenly, a warning sound and a warning indication in the display are
activated simultaneously to alert you to maintain a suffi cient distance between the vehicles.
Use the Mazda Radar Cruise Control (MRCC) system on expressways and ot\
her highways
which do not require a lot of repeated acceleration and deceleration.
WARNING
Do not rely completely on the Mazda Radar Cruise Control (MRCC) system and always
drive carefully: The Mazda Radar Cruise Control (MRCC) system is designed to reduce load on the
driver, and although it maintains a constant vehicle speed, or specifi cally, it maintains
a constant distance between your vehicle and the detected vehicle ahead according to
the vehicle speed, the 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 suffi ciently 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 verify the safety of the surrounding area
and depress the brake pedal or accelerator pedal while keeping a safe distance from
vehicles ahead or on-coming vehicles.

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*Some models.4–115
When Driving
Forward Obstruction Warning (FOW)
Forward Obstruction Warning (FOW) *
Forward Obstruction Warning (FOW) is a system which alerts the driver of a possible
collision using an indicator and warning sound in the instrument cluster\
while the vehicle
is being driven at about 15 km/h or faster (10 mph or faster) and the \
system's radar sensor
determines that your vehicle may hit a vehicle or obstruction ahead.
WARNING
Do not rely completely on the Forward Obstruction Warning (FOW) system and always
drive carefully: Forward Obstruction Warning (FOW) is only designed to reduce damage in the event of
a collision. The ability to detect an obstruction is limited depending on the obstruction,
weather conditions, or traffi c conditions. Therefore, if the accelerator pedal or brake
pedal is mistakenly operated it could result in an accident. Always verify the safety of the
surrounding area and depress the brake pedal or accelerator pedal while keeping a safe
distance from vehicles ahead or on-coming vehicles.
NOTE
 y  The Forward Obstruction Warning (FOW) system operates when all of the following
conditions are met:
 y The ignition is switched ON. y The Forward Obstruction Warning (FOW) system is on. y The vehicle speed is about 15 km/h (10 mph) or faster. y The relative speed between your vehicle and the vehicle or obstruction ahead \
is about
15 km/h (10 mph) — 145 km/h (90 mph).
 y The Forward Obstruction Warning (FOW) system may not operate under the following
conditions:
 y If there is the possibility of hitting only a part of a vehicle or obstruction \
ahead. y If the vehicle is accelerated rapidly and it comes close to a vehicle ah\
ead. y The DSC is malfunctioning. y The vehicle is driven at the same speed as the vehicle ahead. y The accelerator pedal is depressed. y The brake pedal is depressed. y The steering wheel is being operated. y The selector lever is being operated. y The turn signal is being used.
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