Mazda CX-30 2020 Owner's Manual page 489

Key Battery Replacement
▼ 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 (CR2032 or equivalent).
The following conditions indicate that
the battery power is low:
A message, "Low Key Fob Battery.

Replace Battery" is displayed on the
multi-information display when the
ignition is switched OFF.
The system does not operate and the

operation indicator light on the
Owner Maintenance
transmitter does not flash when the
buttons are pressed.
The system's operational range is

reduced.
Incorrect battery replacement
operation may damage the key.
Replacing the battery at an expert
repairer (we recommend an
Authorised Mazda Repairer) is
recommended. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
1. Remove the lower cover while
pressing the knob in the direction
of the arrow.
2. Press in the tab to unlock the upper
cover.
Maintenance and Care
6-39