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 ModeClutch Release Cylinder Removal/Installation [C66 M R]
CAUTION:
Do not allow clutch fluid get on a painted surface. Clutch fluid contains
properties which can dissolve the paint. If clutch fluid gets on a painted surface,
wash it off with water immediately and wipe the area off completely.
1. Remove the aerodynamic under cover No.2.. ...
Speedometer
The speedometer indicates the speed of the
vehicle.
Speed Unit Selector (Type A
Instrument Cluster)
In some countries, you may have to
change the speed units between km/h and
mph.
Press the speed unit selector for 1.5
seconds or more.
The speed units for the speedometer will
change bet ...
Front Door Checker Removal/Installation
1. Fully close the front door glass.
2. Disconnect the negative battery cable..
3. Remove the inner garnish..
4. Remove the front door trim..
5. Remove the front door speaker..
6. Remove the bolt A.
7. Remove the bolts B.
8. Pull out the front door checker from the front speake ...