2021 MAZDA MODEL 6 engine

Do not apply a strong force to an ultrasonic sensor (rear):
When washing the vehicle, do not spray highly pressurized water against an ultrasonic sensor
(rear), or rub it strongly. In addition, do no t hit the rear bumper forcefully when loading and
unloading cargo Otherwise, the sensors may no t detect obstructions correctly which could
cause the SCBS R system to not operate normally, or it could operate unnecessarily.
CAUTION
 When driving off-road in areas where there is gr ass or foliage, it is recommended that the
SCBS R system be turned off.
 Always use tires of the specified size and the same manufacturer, brand, and tread pattern
on all 4 wheels. In addition, do not use tires wi th significantly different wear patterns on the
same vehicle. Otherwise, the SCBS R system may not operate normally.
 If ice or snow is stuck on the ultrasonic sensors (rear) they may not be able to detect
obstructions correctly depending on the condit ions. In such cases, the system may not be
able to perform controls correctly. Always dr ive carefully and pay attention to the rear of
the vehicle.
NOTE
The vehicle posture changes depending on the accelerator pedal, brake pedal and
steering wheel operations, which could make it difficult for the system to recognize an
obstruction, or it could facilitate unnecessary detection. In such cases, the SCBS R may or
may not operate.
The SCBS R system will operate under the following conditions.
The engine is running.
The selector lever is in the R (reverse) position.
“Smart City Brake Support Reverse Malfunction” is not displayed in the
multi-information display.
The vehicle speed is between about 2 to 8 km/h (2 to 4 mph).
The SCBS R is not turned off.
The DSC is not malfunctioning.
The SCBS R operates using ultrasonic sensors (rear) which detect obstructions at the rear
by emitting ultrasonic waves and then receiving the returning waves reflected off the
obstructions.
In the following cases, the ultrasonic sensors (rear) cannot detect obstructions and the
SCBS R may not operate.
The height of the obstruction is low such as low walls or trucks with low loading
platforms.
The height of the obstruction is high such as trucks with high loading platforms.
When Driving
i-ACTIVSENSE
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The obstruction is small.
The obstruction is thin such as a signpost.
The obstruction is positioned away from the center of the vehicle.
The surface of the obstruction is not pointed vertically relative to the vehicle.
The obstruction is soft such as a hanging curtain or snow stuck to a vehicle.
The obstruction is shaped irregularly.
The obstruction is extremely close.
In the following cases, the ultrasonic sensors (rear) cannot detect obstructions correctly
and the SCBS R may not operate.
Something is stuck on the bumper near an ultrasonic sensor (rear).
The steering wheel is turned sharply, or the brake or accelerator pedal is operated.
There is another obstruction near one obstruction.
During inclement weather such as rain, fog and snow.
High or low humidity.
High or low temperatures
Strong winds.
The path of travel is not flat.
Heavy luggage is loaded in the luggage compartment or on the rear seat.
Objects such as a wireless antenna, fog light, or illuminated license plate is installed
near an ultrasonic sensor (rear).
The orientation of an ultrasonic sensor (r ear) has deviated for reasons such as a
collision.
The vehicle is affected by other sound wave s such as the horn, engine noise, ultrasonic
sensor of another vehicle.
In the following cases, an ultrasonic sensor (rear) may detect something as a target
obstruction which could cause the SCBS R system to operate.
Driving on a steep slope.
Wheel blocks.
Hanging curtains, gate poles such as at toll gates and railroad crossing.
When traveling near objects such as foliage, barriers, vehicles, walls, and fences along
a road.
When driving off-road in areas where there is grass and forage.
When passing through low gates, narrow gates, car washing machines, and tunnels.
A towing bar is installed or a trailer is connected.
When the system operates, the user is notified by the multi-information display.
The Smart City Brake Support (SCBS) warning indication (amber) turns on when the
system has a malfunction.
Refer to Taking Action on page 7-35.
When Driving
i-ACTIVSENSE
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▼Smart City Brake Support (SCBS)
Indicator Light (Red)
If the Smart City Bra
ke Support (SCBS) is
operating, the indicator light (red) flashes.
▼ Automatic Brake
Operation Display
The automatic brake operation display is
indicated on the multi- information display
after the SCBS R is operated.
NOTE
The collision warning beep sounds
intermittently while the SCBS R brake is
operating.
If the vehicle is stopped by the SCBS R
operation and the brake pedal is not
depressed, the warning beep sounds 1
time after about 2 seconds and the SCBS
R brake is automatically released.
▼ Stopping the Smart City Brake
Support [Reverse]
(SCBS R) System
Operation
The SCBS R system can be temporarily
deactivated.
Refer to the Settings section in the Mazda
Connect Owner's Manual.
When the SCBS R 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 SCBS R system is set to
inoperable, Advanced Smart City Brake
Support (Advanced SCBS) and the Smart
Brake Support (SBS) are also set to
inoperable.
When Driving
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When warnings and messages, such
as a dirty windshield, related to the
Forward Sensing Camera (FSC) are
being displayed in the
multi-information display.
Although the objects which activate the
system are four-wheeled vehicles, the
radar sensor (front) could detect the
following objects, determine them to be
an obstruction, and operate the SBS
system.
Objects on the road at the entrance to
a curve (including guardrails and
snow banks).
A vehicle appears in the opposite lane
while cornering or rounding a curve.
When crossing a narrow bridge.
When passing under a low gate or
through a tunnel or narrow gate.
When entering an underground
parking area.
Metal objects, bumps, or protruding
objects on the road.
If you suddenly come close to a
vehicle ahead.
When driving in areas where there is
high grass or forage.
Two-wheeled vehicles such as
motorbikes or bicycles.
Pedestrians or non-metallic objects
such as standing trees.
When the system operates, the user is
notified by the multi-information
display.
If there is a problem with the SBS
system, a message is displayed in the
multi-information display. Check the
center display to ver ify the problem and
then have your vehicle inspected by an
Authorized Mazda Dealer.
Refer to Message Indicated on Display
on page 7-43.
▼ Collision Warning
If there is the possibility of a collision with
a vehicle ahead, the beep sounds
continuously and a warning is indicated in
the multi-information display and the
active driving display.
▼Stopping The Smart Brake Support
(SBS) System Operation
The SBS system can be temporarily
deactivated.
Refer to the Settings section in the Mazda
Connect Owner's Manual.
When the SBS system is turned off, the
SBS OFF indicator light turns on.
When the engine is restarted, the system
becomes operational.
NOTE
If the SBS system operation is turned off,
the Smart City Brake Support (SCBS)
system operation is turned off
simultaneously.
When Driving
i-ACTIVSENSE
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▼To Temporarily Cancel
To temporarily cancel the system, use one
of these methods:
Slightly depress
the brake pedal.
Press the OFF/CANCEL switch.
If the RESUME/
switch is pressed when
the vehicle speed is 25 km/h (16 mph) or
higher, the system reverts to the previously
set speed.
NOTE
If any of the follow ing conditions occur,
the cruise control system is temporarily
canceled.
The parking brake is applied.
The selector lever is in the P or N
position.
When the cruise control system is
temporarily canceled by even one of the
applicable cancel conditions, the speed
cannot be re-set.
The cruise control cannot be cancelled
while driving in manual mode (selector
lever shifted from D to M position).
Therefore, engine braking will not be
applied even if the transaxle is shifted
down to a lower gear. If deceleration is
required, lower the set speed or depress
the brake pedal.
▼ To Deactivate
When a cruising speed has been set
(cruise set indication (green) turns on)
Long-press the OFF/
CANCEL switch or
press the OFF/CANCEL switch 2 times.
When a cruising speed has not been set
(cruise main indica tion (white) turns
on)
Press the OFF/CANCEL switch.
When Driving
Cruise Control
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Diesel Particulate Filter(SKYACTIV-D 2.2)
The diesel particulate filter collects and
removes most of the particulate matter
(PM) in the exhaust gas of a diesel engine.
PM collected by the diesel particulate
filter is cleared during normal driving,
however, PM may not be removed and the
diesel particulate filter indicator light may
illuminate under the following conditions:
If the vehicle is driven at 15 km/h (9
mph) or less continuously.
If the vehicle is repeatedly driven for a
short period of time (10 minute or less)
or driven while the engine is cold.
If the vehicle is idled for a long time.
When “DPF Clogged” is indicated
The particulate matter (PM) cannot be
removed automatically and the amount of
collected PM reaches a specified amount.
After the engine has sufficiently warmed
up (engine coolant temperature of 80 °C
(176 °F) or more), depress the accelerator
pedal and drive the vehicle at a speed of
20 km/h (12 mph) or more for about 15 to
20 minutes to eliminate the PM.
When “DPF malfunction” is indicated
Contact an Authorized Mazda Dealer.
CAUTION
If the vehicle continues to be driven with
“DPF Clogged” indicated in the display, the
particulate matter (PM) increases and the
indication may change to “DPF
malfunction”. If the indication changes to
“DPF malfunction”, have the vehicle
inspected immediately at an Authorized
Mazda Dealer. If the vehicle is not
inspected and continues to be driven, the
engine may malfunction.
NOTE
When “DPF malfunction” is indicated
in the display, the engine output is
restricted to protect the diesel
particulate filter.
The engine sound and exhaust gas smell
may change when PM is being removed
while driving.
When Driving
Diesel Particulate Filter
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Selective Catalytic Reduction (SCR) System(SKYACTIV-D 2.2)
The SCR system is designed to reduce nitrogen oxide (NOx) in the exhaust gas and purify
the exhaust gas by injecting it w ith Diesel Exhaust Fluid (DEF).
WARNING
Be careful not to allow the DEF to run out. If the DEF completely runs out, the SCR system will
not operate normally.
When the remaining DEF is low, a message is displayed on the multi-information display, and
the SCR warning light turns on/flashes.
Refer to Selective Catalytic Reduction (SCR) System Indications on page 4-237.
In this case, consult an Authorized Mazda De aler. If DEF needs to be replenished, add DEF
following the specified procedure.
Refer to Diesel Exhaust Fluid (DEF) Replenishment on page 6-30.
NOTE
DEF needs to be replenished periodically according to the scheduled maintenance
information.
Normally, the vehicle can be driven about 12,000 km (7,500 miles) before the DEF needs
to be replenished. However, it may need to be replenished earlier depending on the
driving and environmental conditions (such as putting a high load on the engine while
driving or driving the vehicle at high altitudes).
The sound of the SCR system operating may be heard from the area under the vehicle,
however, this does not indicate a problem.
▼ Selective Catalytic Reduction
(SCR) System Indications
As the remaining amount of Diesel Exhaust Fluid (DEF) lowers, t he SCR system notifies
the driver using the fo llowing indications.
The vehicle speed may be restric ted for a while even if the warning light turns off after
replenishing the DEF. To cancel the vehicle speed restriction i mmediately, switch the
ignition OFF after the warning li ght turns off and then switch the ignition ON again.
Status Warning sound SCR warn‐
ing light Multi-information
display indication Driving restric‐
tion
Remaining DEF has
decreased
(Maximum driving dis‐
tance : 966 km (600
miles) or less) Sound is activated when igni‐
tion is switched ON
Turns off
None
When Driving
Selective Catalytic Re
duction (SCR) System
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Anything which generates ultrasound is near the vehicle, such as another vehicle's
horn, the engine sound of a motorcycle, the air brake sound of a large-sized vehicle, or
another vehicle's sensors.
The vehicle is driven in heavy rain or in road conditions causing water-splash.
A commercially-available fender pole or an antenna for a radio transmitter is installed
to the vehicle.
The vehicle is moving towards a tall or square curbstone.
An obstruction is too close to the sensor.
Obstructions under the bumper may not be detected. Obstructions that are lower than the
bumper or thin which may have been initially detected may no longer be detected as the
vehicle approaches more closely to the obstruction.
The following types of obstructions may not be detected:
Thin objects such as wire or rope
Things which absorb sonic waves easily such as cotton or snow
Angular shaped objects
Very tall objects, and those which are wide at the top
Small, short objects
Always have the system inspected at an Authorized Mazda Dealer if any shock is applied
to the bumpers, even in a minor accident. If the sensors are deviated, they cannot detect
obstructions.
The system may have a malfunction if the beep does not operate or the indicator light
does not illuminate when the parking sensor switch is turned on. Consult an Authorized
Mazda Dealer.
The system may have a malfunction if the beep sound which indicates a system
malfunction is heard and the i ndicator light flashes. Consult an Authorized Mazda Dealer.
The beeper which indicates a system malf unction may not be heard if the ambient
temperature is extremely cold, or mud, ice, or snow adheres to the sensor area. Remove
any foreign material from the sensor area.
When Driving
Parking Sensor System
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