change key battery MAZDA MODEL 3-SEDAN 2020 Owners Manual

Keyless Entry System
▼Keyless Entry System
This system uses the key buttons to
remotely lock and unlock the doors,
liftgate, and fuel-fill
er lid, and opens the
trunk lid.
The system can start the engine without
having to take the key out of your purse or
pocket.
It can also help you s ignal for attention or
help.
Operating the theft-deterrent system is
also possible on theft-deterrent
system-equipped vehicles.

System malfunctions or warnings are
indicated by the fo llowing warning lights
or beeps.
Check the displaye d message for more
information and, if necessary, have the
vehicle inspected at an Authorized Mazda
Dealer, according to the indication.
KEY Warning Indicat ion/Warning Light
(Red)
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-33.
Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched Off
(STOP) Warning Beep on page 7-42.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-42.
If you have a problem with the key,
consult an Authorized Mazda Dealer.

If your key is lost or stolen, consult an
Authorized Mazda Dealer as soon as
possible for a replacement and to make the
lost or stolen key inoperative.
CAUTION
Radio equipment like this is governed by
laws in the United States.
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user's authority
to operate the equipment.
NOTE
The keyless entry system operation may
vary due to local conditions.
The keyless entry system is fully
operational when the ignition is
switched off. The system does not
operate if the ignition is switched to any
position other than off.
If the key does not operate when
pressing a button or the operational
range becomes too small, the battery
may be weak. To install a new battery,
refer to Key Battery Replacement (page
6-28).
Battery life is about 1 year. Replace the
battery with a new one if the messages
are displayed in the instrument cluster.
Replacing the battery about once a year
is recommended because the KEY
warning indication may not display
depending on the rate of battery
depletion.
Before Driving
Keys
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Index
Uniform tire quality grading system
(UTQGS)..................................... 8-21
Tire Information Location of the tire label
(placard)....................................... 8-27
Steps for determining the correct load
limit..............................................8-34
Tire labeling.................................8-23
Tire maintenance......................... 8-29
Vehicle loading............................ 8-31
Tire Pressure Monitoring System.... 4-216
Touch Sensor Inoperable Warning Beep
(With the advanced keyless
function)............................................ 7-43
To w i n g Recreational towing.....................3-51
Trailer towing.............................. 3-51
Towing Description........................... 7-23
Traction Control System (TCS)........ 4-76
TCS/DSC indicator light............. 4-76
Traffic Jam Assist (TJA).................4-137 Close proximity warning........... 4-142
Display indication......................4-141
Setting the system..................... 4-143
Shift-up/shift-down request
display........................................4-150
Stop hold control....................... 4-150
Traffic Sign Recognition System
(TSR)................................................. 4-99
Trouble Battery runs out........................... 7-17
Emergency starting...................... 7-20
Flat tire.......................................... 7-7
Overheating................................. 7-21
Parking in an emergency............... 7-2
When liftgate/tr unk lid cannot be
opened..........................................7-46
Trunk Lid............ .............................. 3-19
Inside trunk release lever............ 3-23
When liftgate/tr unk lid cannot be
opened..........................................7-46Trunk Light....... ................................ 5-35
Turn and Lane-Change Signals......... 4-50
Turn Signals...................................... 4-50
U
Ultrasonic Sensor............................ 4-209
V
Vehicle Information Labels Chassis number..............................9-2
Engine number.............................. 9-3
Motor vehicle safety standard
label............................................... 9-2
Tire pressure label......................... 9-2
Vehicle emission control information
label............................................... 9-2
Vehicle identification number........9-2
Vehicle Problem Warning Beep........ 7-44
W
Warning Sound is Activated Air bag/front seat belt pretensioner
system warning beep................... 7-41
AUTOHOLD warning beep........ 7-44
Blind Spot Monitoring (BSM)
warning beep............................... 7-44
Brake override warning beep...... 7-43
Collision warning........................ 7-45
Door-ajar warning beep...............7-45
Electric Parking Brake (EPB)
warning beep............................... 7-43
Excessive speed warning.............7-45
Front Cross Traffic Alert (FCTA)
Warning Beep.............................. 7-44
Ignition not switched off (STOP)
warning beep............................... 7-42
Key left-in-lugg age compartment/
trunk warning beep (With the
advanced keyless function)......... 7-43
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