2018 MAZDA MODEL 3 HATCHBACK sensor

Front passenger air bag deactivation indicator light on/off condition chart
Condition detected by the front
passenger occupant classifica- tion system Front passenger air
bag deactivation indi- cator light Front passenger front
and side air bags Front passenger seat
belt pretensioner sys- tem
Empty (Not occupied) On Deactivated Deactivated
A child less than 1 year old is
seated in a child-restraint system On Deactivated Deactivated
Child
*1On or off Deactivated or ready Deactivated or ready
Adult
*2Off Ready Ready
*1 The occupant classification sens or may not detect a child seated on the seat, in a child-restraint system, or a
junior seat depending on the ch ild's physical size and seated posture.
*2 If a smaller adult sits on the front passenger seat, the sensors might detect the person as being a child
depending on the person's physique.
The curtain air bag is ready for inflating regardless of what the front passenger air bag
deactivation indicator light on/off condition chart indicates.
If the front passenger air bag deactivation indicator light doe s not turn on when the ignition
is switched ON and does not turn on as indicated in the front p assenger air bag deactivation
indicator light on/off condition chart, do not allow an occupan t to sit in the front passenger
seat and consult an Authorized M azda Dealer as soon as possible. The system may not work
properly in an accident.
WA R N I N G
Do not allow an occupant in the front passenger's seat to sit with a posture which makes it
difficult for the front passenger occupant classification sensor to detect the occupant
correctly:
Sitting in the front passenger's seat with a posture which makes it difficult for the front
passenger occupant classification sensor to detect the occupant correctly is dangerous. If the
front passenger occupant classification sensor cann ot detect the occupant sitting on the front
passenger's seat correctly, the front passenger front and side air bags and pretensioner system
may not operate (non-deploy) or they may oper ate (deploy) accidentally. The front passenger
will not have the supplementary protection of the air bags or the accidental operation
(deployment) of the air bags could result in serious injury or death.
Under the following conditions, the front passe nger occupant classification sensor cannot
detect a passenger sitting on the front pa ssenger's seat correctly and the deployment/
non-deployment of the air bags cannot be controlled as indicated in the front passenger air
bag deactivation indicator light on/off condition chart. For example:
Essential Safety Equipment
SRS Air Bags
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The front passenger front and side air bags and seat belt pretensioner systems will deactivate
if the front passenger air bag deactivation indicator light turns on.
CAUTION
To assure proper deployment of the front air bag and to prevent damage to the sensor in
the front seat cushion:
 Do not place sharp objects on the front seat cushion or leave heavy luggage on them.
 Do not spill any liquids on the front seats or under the front seats.
 To allow the sensors to function pr operly, always perform the following:
 Adjust the front seats as far back as possibl e and always sit upright against the seatbacks
with seat belts worn properly.
 If you place your child on the front passenger seat, secure the child-restraint system
properly and slide the fron t passenger seat as far back as possible (page 2-33).
NOTE
The system requires about 10 seconds to alte rnate between turning the front passenger
front and side air bags and seat belt pretensioner system on or off.
The front passenger air bag deactivation indicato r light may turn on repeatedly if luggage
or other items are put on the front passenger seat, or if the temperature of the vehicle's
interior changes suddenly.
The front passenger air bag deactivation indicato r light may turn on for 10 seconds if the
electrostatic capacity on the front passenger seat changes.
The air bag/front seat belt pretensioner system warning light might turn on if the front
passenger seat receives a severe impact.
If the front passenger air bag deactivation indicator light does not turn on after installing
a child-restraint system on the front passenger seat, first, re-install your child-restraint
system according to the procedure in this owner's manual. Then, if the front passenger air
bag deactivation indicator light still does not tu rn on, install the child-restraint system on
the rear seat and consult an Authorized Mazda Dealer as soon as possible.
If the front passenger air bag deactivation i ndicator light turns on when an occupant is
seated directly in the front passenger seat, have the passenger re-adjust their posture by
sitting with their feet on the floor, and th en re-fastening the seat belt. If the front
passenger air bag deactivation i ndicator light remains turned on, move the passenger to
the rear seat. If sitting in the rear seat is no t possible, slide the front passenger seat as far
back as possible. Consult an Authorized Mazda Dealer as soon as possible.
Essential Safety Equipment
SRS Air Bags
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Constant Monitoring
The following components of the air bag systems are monitored by a diagnostic system:

Front air bag sensors
Crash sensors, and diagnostic module (SAS unit)
Side crash sensors
Air bag modules
Front seat belt pretensioners
Air bag/Front seat belt pretensioner system warning light
Related wiring
(With Front Passenger Occupa nt Classification System)
Front passenger occupant classification sensor
Front passenger occupant classification module
Front passenger air bag deactivation indicator light

The diagnostic module continuously monitors the system's readin ess. This begins when the
ignition is switched ON and contin ues while the vehicle is being driven.
Essential Safety Equipment
SRS Air Bags
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Fuel and Engine Exhaust Precautions
▼Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use O
NLY UNLEADED FUEL,
which will reduce exhaust emissions and keep spark plug fouling to a minimum.

This vehicle will perform best w ith fuel listed in the table.
Fuel
Octane Rating* (Anti-knock index)
Regular unleaded fuel 87 [(R
M)/2 method] or above (91 RON or above)
U.S. federal law requires that octane ratings be posted on gaso
line station pumps.
Fuel with a rating lower than 87 octane (91 RON) will negativel y affect the emission control
system performance and could also cause engine knocking and ser ious engine damage.
CAUTION
USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to th e catalytic converter and oxygen sensors and will lead to
deterioration of the emission control system and or failures.
 This vehicle can only use oxygenated fuels containing no more than 10 % ethanol by
volume. Damage to the vehicle may occur wh en ethanol exceeds this recommendation, or
if the gasoline contains any methanol. Stop using gasohol of any kind if your vehicle engine
is performing poorly.
 Never add fuel system additives, otherwise th e emission control system could be damaged.
Consult an Authorized Mazda Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compo unds are generally
referred to as oxygenated fuels. The common gasoline blend that can be used with your
vehicle is ethanol blended at no more than 10 %. Gasoline conta ining alcohol, such as
ethanol or methanol, may be marketed under the name "Gasohol".

Vehicle damage and drivability problems resulting from the use of the following may not be
covered by the warranty.
Gasohol containing mo re than 10 % ethanol.
Gasoline or gasohol containing methanol.
Leaded fuel or leaded gasohol.
Before Driving
Fuel and Emission
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(Without Homelink wireless control
system)
Press the ON/OFF button
to cancel the
auto-dimming function. The indicator light
will turn off.
To reactivate the auto -dimming function,
press the ON/OFF button
. The indicator
light will illuminate.

ON/OFF button
Indicator light
NOTE
Do not use glass cleaner or suspend
objects on or around the light sensor.
Otherwise, light sensor sensitivity will
be affected and may not operate
normally.
(With Homelink wireless control
system)

Light sensor
(Without Homelink wireless control
system)

Light sensor
(With Homelink wireless control
system)
For information regarding the 3 buttons
(
,,) on the auto-dimming
mirror.
Refer to HomeLink Wireless Control
System on page 4-56.
The auto-dimming function is canceled
when the ignition is switched ON and
the shift lever is in reverse (R).
Before Driving
Mirrors
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Drive Selection................................. 4-74Drive Selection
*..........................4-74
Power Steering................................. 4-76 Power Steering............................4-76
i-ACTIVSENSE............................... 4-77 i-ACTIVSENSE......................... 4-77
Adaptive Front Lighting System
(AFS)
*........................................ 4-80
High Beam Control System
(HBC)
*........................................4-81
Blind Spot Monitoring (BSM)
*.........
.................................................... 4-84
Traffic Sign Recognition System
(TSR)
*........................................ 4-90
Distance Recognition Support
System (DRSS)
*......................... 4-96
Rear Cross Traffic Alert (RCTA)
*.....
.................................................... 4-98
Mazda Radar Cruise Control
(MRCC)
*.................................. 4-102
Lane-keep Assist System (LAS) &
Lane Departure Warning System
(LDWS)
*...................................4-113
Smart City Brake Support
(SCBS)
*.................................... 4-124
Smart Brake Support (SBS)
*.... 4-128
Forward Sensing Camera
(FSC)........................................ 4-131
Radar Sensor (Front)................ 4-136
Radar Sensors (Rear)............... 4-139
Cruise Control............................... 4-141
Cruise Control
*.........................4-141
Tire Pressure Monitoring
System.............................................4-146 Tire Pressure Monitoring System
*.....
.................................................. 4-146
Rear View Monitor....................... 4-150 Rear View Monitor
*................. 4-150
4-2*Some models.
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Type C instrument cluster

Full1/4 Full
Empty
If the low fuel warnin g light illuminates or
the fuel level is very low, refuel as soon as
possible.
Refer to Taking Action on page 7-32 .
NOTE
After refueling, it may require some time
for the indicator to stabilize. In addition,
the indicator may deviate while driving
on a slope or curve since the fuel moves
in the tank.
The display indicating a quarter or less
remaining fuel has more segments to
show the remaining fuel level in greater
detail.
The direction of the arrow () indicates
that the fuel-filler lid is on the left side
of the vehicle.
▼ Dashboard Illumination
(Without auto-light control)
When the position lights are turned on
with the ignition switched ON, the
brightness of the dash
board illumination is
dimmed.
(With auto-light control)
When the position lights are turned on
with the ignition switched ON, the
brightness of the dash board illumination is
dimmed. However, when the light sensor
detects that the surrounding area is bright
such as when the position lights are turned
on in the daytime, the dashboard
illumination does not dim.
NOTE
(With auto-light control)
When the ignition is switched ON in the
early evening or at dusk, the dashboard
illumination is dimmed for several
seconds until the light sensor detects the
brightness of the surrounding area,
however, the dimmer may cancel after
the brightness is detected.
When the position lights are turned on,
the position lights i ndicator light in the
instrument cluster turns on.
Refer to Headlights on page 4-43.
The brightness of the instrument cluster
and dashboard illuminations can be
adjusted by rotating the knob.
The brightness decreases by rotating the
knob to the left. A beep sound will be
heard when the knob has been rotated to
the maximum dim position.
When Driving
Instrument Cluster and Display
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Active Driving Display*
Optical receiver
Mirror
Combiner
WA R N I N G
Always adjust the display brightness and position with the vehicle stopped:
Adjusting the display brightness and position wh
ile driving the vehicle is dangerous as doing
so could distract your attention from the road ahead and lead to an accident.
CAUTION
 Do not try to adjust the angle or open/c lose the active driving display manually.
Fingerprints on the display will make it difficult to view and using excessive force when
operating it could cause damage.
 Do not place objects in the vicinity of the active driving display. The active driving display
may not operate or any interference with its operation could cause damage.
 Do not place beverages near the active driving display. If water or other liquids are splashed
on the active driving display, it could cause damage.
 Do not place objects above the active driving display or apply stickers to the dust-proof
sheet/optical receiver as they will cause interference.
 A sensor is integrated to control the display's luminosity. If the optical receiver is covered,
the display's luminosity will lower making the display difficult to view.
 Do not allow intense light to hit the optical receiver. Otherwise, it could cause damage.
When Driving
Instrument Cluster and Display
4-20*Some models.
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