Mazda 3 Sedan 2020 Owner's Manual page 217

▼ Gate operator/Canadian
Programming
Canadian radio-frequency laws require
transmitter signals to "time-out" (or
quit) after several seconds of
transmission ― which may not be long
enough for HomeLink to pick up the
signal during programming. Similar to
this Canadian law, some U.S. gate
operators are designed to "time-out"
in the same manner.
If you live in Canada or are having
difficulties programming a gate
operator by using the programming
procedures (regardless of where you
live), replace Step 3 of Programming
the HomeLink System with the
following:
NOTE
If programming a garage door opener
or gate operator, it is advised to unplug
the device during the "cycling" process
to prevent possible overheating.
While the indicator light is flashing in
amber, press the button on the
hand-held transmitter for 2 seconds
and release it repeatedly until the
indicator light changes from amber to
green.
Go back to Step 4 of Programming the
HomeLink System to complete the
procedure.
▼ Operating the HomeLink System
Press the programmed HomeLink
button to operate a programmed
device.
Switches and Controls
▼ Reprogramming the HomeLink
system
To program a device to HomeLink
using a HomeLink button previously
trained, follow these steps:
1. Press and hold the desired
HomeLink button. DO NOT release
the button.
2. After 20 seconds, the indicator light
flashes in amber. After the indicator
light flashes, release the HomeLink
button.
3. Go back to Step 2 of Programming
the HomeLink System to complete
the procedure.
NOTE
If the programming has not been
completed, the system returns to the
previous programming.
▼ Erasing Programmed HomeLink
Buttons
NOTE
All of the programmed HomeLink

buttons are reset. Individual buttons
cannot be reset, however, individual
buttons can be reprogrammed. For
individual button reprogramming,
refer to Reprogramming the
HomeLink System (page 4-63).
Verify that the programming has

been erased if you resell the vehicle.
When Driving
4-63