Mazda 3 Sedan 2020 Owner's Manual page 540

If Trouble Arises
Warning/Indicator Lights and Warning Sounds
"Key Not Detected" is displayed
If the presence of the key cannot be

detected (dead battery, battery
malfunction, no key), it is displayed
when the driver attempts to start the
engine (push button start operation,
brake pedal depression).
Displayed when it is determined that

a key that was in the vehicle has
been removed from the vehicle. (Key
taken out warning. Other than
IG-OFF).
▼ Security Indicator Light
If the security indicator light flashes
continuously while you are driving, do
not shut off the engine. Go to an
Authorized Mazda Dealer and have it
checked. If the engine is shut off while
the indicator light is flashing, you will
not be able to restart it.
Make sure the key is within the
operational range for signal
transmission. Switch the ignition off,
and then restart the engine. If the
engine does not start after 3 or more
tries, contact an Authorized Mazda
Dealer.
NOTE
Because the electronic codes are reset
when the immobilizer system is
repaired, the keys are needed. Make
sure to bring all the keys to an
Authorized Mazda Dealer so that they
can be programmed.
7-34
*Some models.
▼ High Beam Control System (HBC)
Warning Indication/Warning Light
(Amber) *
The light remains turned on if there is a
problem with the system. Have your
vehicle inspected at an Authorized
Mazda Dealer.
▼ i-ACTIVSENSE Warning
Indication/Warning Light
The indication displays if the system
has a malfunction.
Check the reason for the indication
displaying on the center display or
multi-information display.
Refer to If a Warning Light Turns On or
Flashes on page 7-27.
▼ Exterior Light Warning Indication/
Warning Light
This light illuminates if there is a
malfunction in the exterior lights
(except license plate lights). Have your
vehicle inspected by an Authorized
Mazda Dealer.
*