Mazda CX-3: Owner Maintenance / Key Battery Replacement
If the buttons on the transmitter are
inoperable and the operation indicator
light does not flash, the battery may be
dead.
Replace with a new battery before the
transmitter becomes unusable.
CAUTION
- Make sure the battery is installed
correctly. Battery leakage could occur if it
is not installed correctly.
- When replacing the battery, be careful
not to touch any of the internal circuitry
and electrical terminals, bend the
electrical terminals, or get dirt in the
transmitter as the transmitter could be
damaged.
- There is the danger of explosion if the
battery is not correctly replaced.
- Dispose of used batteries according to
the following instructions.
- Insulate the plus and minus terminals
of the battery using cellophane or
equivalent tape.
- Never disassemble.
- Never throw the battery into fire or
water.
- Never deform or crush.
- Replace only with the same type battery
(CR2025 or equivalent).
The following conditions indicate that the
battery power is low:
- The KEY indicator light (green) flashes
in the instrument cluster for about 30
seconds after the engine is switched
OFF.
- The system does not operate and the
operation indicator light on the
transmitter does not flash when the
buttons are pressed.
- The system's operational range is
reduced.
Replacing the battery at an Authorized
Mazda Dealer, is recommended to prevent
damage to the key. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
- Press the knob and pull out the
auxiliary key.

- Twist a tape-wrapped flathead
screwdriver in the direction of the
arrow and open the cover slightly.

- Insert the tape-wrapped flathead
screwdriver into the gap and slide it in
the direction of the arrow.

- Twist the flathead screwdriver in the
direction of the arrow and remove the
cover.

- Remove the battery cap, then remove
the battery.

CAUTION
Be careful not to allow the rubber
ring shown in the figure to be
scratched or damaged.
If the rubber ring detaches, reattach
it before inserting a new battery.

- Insert a new battery with the positive
pole facing up, and then cover the
battery with the battery cap.

- Close the cover.

- Reinsert the auxiliary key.
WARNING
Wash hands after handling the battery and related accessories:
Battery posts, terminals and related accessories contain lead and lead
compounds, chemicals
known to the State of California to cause cancer and reproductive harm...
For reasons of proper performance, safety,
and better fuel economy, always maintain
recommended tire inflation pressures and
stay within the recommended load limits
and weight distribution...
Other information:
Be sure the vehicle is on a level
surface.
Warm up the engine to normal
operating temperature.
Turn it off and wait at least 5 minutes
for the oil to return to the oil pan.
Pull out the dipstick, wipe it clean, and
reinsert it fully.
Pull it out again and examine the level...
You can shift gears down by operating the
selector lever or the steering shift
switches*.
M6 → M5 → M4 → M3 → M2→ M1
Using selector lever
To shift down to a lower gear, tap the
selector lever forward once.
Using steering shift switch*
To shift down to a lower gear with the
steering shift switches, pull the DOWN switch toward you once with your
fingers...
Categories
In this owner's manual, explanation of
child-restraint systems is provided for the
following three types of popular
child-restraint systems: infant seat, child
seat, booster seat.
NOTE
Installation position is determined by
the type of child-restraint system.
Always read the manufacturer's
instructions and this owner's manual
carefully.
Due to variations in the design of
child-restraint systems, vehicle seats
and seat belts, all child-restraint systems
may not fit all seating positions. Before
purchasing a child-restraint system, it
should be tested in the specific vehicle
seating position (or positions) where it
is intended to be used. If a previously
purchased child-restraint system does
not fit, you may need to purchase a
different one that will.
read more