If the selector lever will not move from P using the proper shift procedure, continue to hold down the brake pedal.

Take the vehicle to an Authorized Mazda Dealer to have the system checked.
Shift-Lock System
Manual Shift ModeSirius Satellite Radio Antenna Feeder Inspection
SIRIUS Satellite Radio Antenna Feeder No.1
NOTE:
SIRIUS satellite radio antenna feeder No.1 is integrated with the dashboard
wiring harness.
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Passenger-side front scuff plate.
b. Passenger-side front ...
Battery
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.
Read the following
precautions ...
Parameter Setting Procedure When Tire Size Is Changed
CAUTION:
If the wheel and tire sizes are changed, a discrepancy with the speedometer
needle whereby it exceeds the allowable range could result in a malfunction.
If the wheel and tire sizes are changed, perform the following procedure to
change the tire size parameter setting.
...