No. 3 transmitter id code cannot be reprogrammed
Location indexMazda 6 Service Manual: Maintenance Monitor
The following maintenance period notifications can be displayed by turning the
Maintenance Monitor on.
Scheduled Maintenance
Tire Rotation
Oil Change
For the setting method and indications for the maintenance monitor, refer to
the Maintenance Monitor.
The maintenance monitor displays ...
Mazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more
than about 25 km/h (16 mph).
WARNING
Do not use the cruise control under the following conditions: Using
the cruise control under the following conditions is dangerous and could result
in loss of vehicle control.
...