brake MAZDA MODEL 3 4-DOOR 2016 Service Manual

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For the purposes of safety, switch the Mazda Radar Cruise Control (MRCC) system off
when it is not being used.
CAUTION
If the vehicle is towed or you are towing something, switch the Mazda Radar Cruise
Control (MRCC) system off to prevent an incorrect operation.
NOTE
 The Mazda Radar Cruise Control (MRCC) system operates when all of the following
conditions are met.
 The vehicle speed is about 30 km/h (19 mph) to 145 km/h (90 mph). The Mazda Radar Cruise Control (MRCC) system is turned on. The parking brake is not applied. The Forward Obstruction Warning (FOW) warning light (amber) does not illuminate. The Dynamic Stability Contr ol (DSC) is operating normally.
(Manual transaxle) The shift lever is in a position other than r everse (R) or neutral (N). The clutch pedal is not depressed.
(Automatic transaxle) The selector lever is in the drive (D) position or manual (M) positi\
on (manual mode).
 In the following cases, the warnings may not activate even if your vehic\
le starts closing in
on the vehicle ahead.
 You are driving at the same speed as the vehicle ahead. Directly after the Mazda Radar Cruise Control (MRCC) system has been set. When the accelerator pedal is depr essed or directly after the accelerator pedal is
released. Another vehicle cuts into the driving lane.
 The following are not detected as physical objects.
 Vehicles approaching in the opposite direction Pedestrians Stationary objects (stopped vehicles, obstructions)
 If a vehicle ahead is traveling at an extr emely low speed, the system may not detect it
correctly. During headway control travel, do not set the system on two-wheeled vehicles such as
motorcycles and bicycles. Do not use the Mazda Radar Cruise Contr ol (MRCC) system under conditions in which
the close proximity warnings are frequently activated.
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 During headway control travel, the system accelerates and decelerates your vehicle in
conjunction with the speed of the vehicle ahead. However, if it is necessary to accelerate
for a lane change or if the vehicle ahead brakes suddenly causing you to\
close in on the
vehicle rapidly, accelerate using the accelerator pedal or decelerate using the brake
pedal depending on the conditions.
 While the Mazda Radar Cruise Contr ol (MRCC) system is in use, it does not cancel even
if the selector lever (automatic transaxle)/shift lever (manual trans\
axle) is operated and
any intended engine braking will not occur. If deceleration is required, lower the vehicle
speed setting or depress the brake pedal.
 The brake lights are illuminated while the Mazda Radar Cruise Control (MRCC)
automatic braking is operating. The Mazda Radar Cruise Contr ol (MRCC) warning light (amber) turns on when the
system has a malfunction. Refer to Warning/Indicator Lights on page 4-20.
Mazda Radar Cruise Control (MRCC) Display Indication
The setting status and operation conditions of the Mazda Radar Cruise Control (MRCC)
system are indicated in the active driving display.
Vehicle ahead display
MRCC Distance between vehicle display
MRCC Set vehicle
speed
Close Proximity Warning
If your vehicle rapidly closes in on the vehicle ahead because the vehic\
le applies the brakes
suddenly while you are traveling in headway control, the warning sound a\
ctivates and
the brake warning is indicated in the display. Always verify the safety of the surrounding
area and depress the brake pedal while keeping a safer distance from the\
vehicle ahead.
Additionally, always keep a safer distance from the vehicles behind you.
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Distance-between-vehicles guideline
(at 80 km/h (50 mph) vehicle speed) Indication on display
Short (about 30 m (98
ft))
Extremely short (about 25 m (82 ft))
NOTE
 The distance between vehicles differs
depending on the vehicle speed, and the
slower the vehicle speed, the shorter the
distance.
 When the ignition is switched to ACC
or OFF and then the engine is started
again, the system automatically sets
the distance between vehicles to the
previous setting.
Changing the Set Vehicle Speed
Changing the set vehicle speed using the
SET switch
Press the SET
switch to accelerate.
Press the SET
switch to decelerate.
The set vehicle speed changes as follows
each time the SET switch is pressed.
Short press 1 km/h (1 mph)
Long press 10 km/h (5 mph)
NOTE
For example, the set vehicle speed is
changed by pressing the SET switch four
times as follows:
The vehicle speed accelerates or
decelerates by 4 km/h (4 mph).
To accelerate using the accelerator
pedal
Depress the accelerator pedal and press
and release the SET
or SET switch at
the desired speed. If a switch cannot be
operated, the system returns to the set
speed when you release your foot from the
accelerator pedal.
CAUTION
The warnings and brake control do not
operate while the accelerator pedal is
depressed.
NOTE
 When accelerating using the SET
switch while in headway control, the set
vehicle speed can be adjusted but
acceleration is not possible. If there is
no longer a vehicle ahead, acceleration
continues until reaching the set vehicle
speed. Check the set vehicle speed by
viewing the set vehicle speed display in
the active driving display.
 When depressing the accelerator pedal,
the inter-vehicle distance display in the
active driving display changes to the
white-line display.
 The minimum settable speed is 30 km/h
(19 mph). If the set vehicle speed
reaches 30 km/h (19 mph) using the
switch operation, constant speed travel
is maintained at about 30 km/h (19
mph) even if the SET
switch is
pressed. The Mazda Radar Cruise
Control (MRCC) system is not canceled.
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To Deactivate
The Mazda Radar Cruise Control (MRCC)
is canceled when the OFF switch is
pressed.
When the system is temporarily
canceled
In the following cases, the Mazda Radar
Cruise Control (MRCC) system is
temporarily canceled and the “MRCC
Cancelled” indication is displayed in
the display in the instrument cluster.
The Mazda Radar Cruise Control
(MRCC) indicator light (green) turns off
simultaneously.
 The CANCEL switch is pressed. The brake pedal is depressed. The parking brake is applied. (Automatic transaxle)
The selector lever is shifted to park (P),
neutral (N) or reverse (R). (Manual transaxle)
The shift lever is in the reverse (R)
position .
 In the following cases, the ”MRCC
Cancelled” indication is displayed and
the beep sounds one time.
 The vehicle speed decreases to less
than 25 km (16 mph). The DSC has operated. The TCS has operated for a certain
period of time. The Smart City Brake Support (SCBS)
has operated. When traveling on a down slope for a
long period of time. There is a problem with the system.
(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.
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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
(front) detects a vehicle ahead and determines that a collision with a\
vehicle ahead is
unavoidable. It may also be possible to avoid a collision if the relativ\
e speed between 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 firmly 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 safer
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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Do not rely completely on the Smart City Brake Support (SCBS) system:
 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.
 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.
 The laser sensor (front) 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.
 Do not apply stickers to the surface of the windshield near the laser sensor (front)
(including transparent stickers). Otherwise, the laser sensor (front) may not be able
to detect vehicles ahead which could result in an accident.
 Do not apply coating agent to the windshield. Otherwise, the laser sensor (front)
may not be able to detect vehicles or obstructions in front which could result in an
accident.
 Do not disassemble the laser sensor (front). If cracks or damage caused by flying gravel or debris is visible near the laser sensor
(front), 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
(front), the system may operate unnecessarily and cause an unexpected accident.
Refer to Stopping The Smart City Brake Support (SCBS) System Operation on page
4-110. 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 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 4-110.
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CAUTION
 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. Always use tires for all wheels that are of the specified size, and the same manufacturer,
brand, and tread pattern. In addition, do not use tires with significantly different wear
patterns on the same vehicle as the Smart City Brake Support (SCBS) system may not
operate normally.
 The laser sensor (front) 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 ahead and may not be able to operate normally. Always drive carefully and pay
attention to the road ahead.
NOTE
 The Smart City Brake Support (SCBS) system will not operate if the dri\
ver is deliberately
performing driving operations (accelerator pedal and steering wheel). The Smart City Brake Support (SCBS) system will operate under the foll\
owing conditions.
 The engine is running. The Smart City Brake Support (SCBS) warning light (amber) does not i\
lluminate. The vehicle speed is between about 4 to 30 km/h (2 to 18 mph). The Smart City Brake Support (SCBS) system is not turned off. The DSC operation is not turned off using the DSC OFF switch. The DSC is not malfunctioning.
 The Smart City Brake Support (SCBS) detects a vehicle ahead by emittin\
g a near-infrared
laser beam and receiving the beam reflected off the reflector 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:
 Reflection of the laser is poor due to the shape of the vehicle ahead. The vehicle ahead is significantly dirty. Under bad weather condition, such as rain, fog and snow . The window washer is being used or the windshield wipers ar e not used when it's
raining. The windshield is dirty. The steering wheel is turned completely left or right, or the vehicle is\
accelerated
rapidly and comes close to the vehicle ahead. Trucks with low loading platforms and vehicles with an extremely low or high profile. Vehicles with certain shapes such as a vehicle carrier.
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*Some models.
 Under the following conditions, the Smart City Brake Support (SCBS) sy\
stem may not
operate normally.
 Heavy luggage is loaded in the luggage compartment or on the rear seat. If there is the possibility of partial contact with a vehicle ahead. When driving on continuously curving roads, and entering and exiting exits. Elongated luggage or cargo is loaded onto installed roof rails and covers the laser
sensor (front). Exhaust gas from the vehicle in front, sand, snow, and water vapor rising from
manholes and grating, and water splashed into the air. When towing a malfunctioning vehicle.
 In the following cases, the laser sensor (fr ont) may inadvertently determine that there is a
vehicle ahead and the Smart City Brake Support (SCBS) system may opera\
te.
 Objects on the road at the entrance to a curve. Vehicles passing in the opposite lane while making a curve. Metal objects, bumps, or pr otruding objects on the road. When passing through a toll gate. When passing under a vinyl curtain or flag. Plastic objects such as pylons. Two-wheeled vehicles, pedestrians, animals or standing trees. Vehicle is driven with some of the tires having significant wear.
 When the system operates, the user is notified by the flashing Sm art City Brake Support
(SCBS) indicator light (red) and the active driving display*. 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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Smart City Brake Support (SCBS)
Indicator Light (Red)
If the Smart City Brake Support (SCBS) is
operating, the indicator light (red) flashes.
Stopping the Smart City Brake
Support (SCBS) System Operation
The Smart City Brake Support (SCBS)
system can be temporarily deactivated.
Refer to Personalization Features on page
9-12.
When the Smart City Brake Support
(SCBS) system is turned off, the Smart
City Brake Support (SCBS) OFF indicator
light turns on.
When the engine is restarted, the system
becomes operational.
NOTE
When the DSC OFF switch is pressed to
stop the DSC operation, the Smart City
Brake Support (SCBS) system operation
also stops and the Smart City Brake
Support (SCBS) OFF indicator light turns
on.
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NOTE
 In the following cases, the radar sensor (front) may not be able to detect vehicles ahead
or obstructions.
 The rear surface of a vehicle ahead does not reflect 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.
 Vehicles ahead with low vehicle height and thus less area for reflecting radio waves. Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its
tires and onto your windshield. The trunk/luggage compartment is loaded with heavy objects or the r ear passenger
seats are occupied. Ice, snow, or soiling is on the front surface of the front emblem. During inclement weather such as rain, snow, or sand storms. When driving near facilities or objects emitting str ong radio waves.
 In the following cases, the radar sensor (front) may detect vehicles in the opposite lane or
surrounding obstructions, or it may not be able to detect vehicles ahead or \
obstructions.
 The beginning and end of a curve. Roads with continuous curves. Narrow lane roads due to road construction or lane closures. The vehicle ahead enters the radar sensor's blind spot. The vehicle ahead is running abnormally due to accident or vehicle damag\
e.  Roads with repeated up and down slopes Driving on poor r oads or unpaved roads. The distance between your vehicle and the vehicle ahead is extr emely short. A vehicle suddenly comes close such as by cutting into the lane.
 To prevent incorrect operation of the system, use tires of the same specified size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with significantly different wear patterns or tire pressures on the same vehicle. (Including
the temporary spare tire)
 If the battery power is weak, the system may not operate correctly. When driving on roads with little traffic and few vehicles ahead or obstructions for the
radar sensor (front) 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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