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 ModeBack Up Light Switch Removal/Installation [G35 M R]
1. Remove the battery cover..
2. Disconnect the negative battery cable.
3. Remove the battery component. (ex: battery, battery tray and PCM component).
4. Remove the aerodynamic under cover No.2..
5. Drain the oil from the transaxle..
6. Disconnect the back-up light switch connector and r ...
Automatic Transaxle Fluid (ATF) Adjustment [Fw6 A EL]
CAUTION:
Only adjust the ATF level when the ATF temperature is 45—55 °C {113—131 °F}.
If the ATF level is incorrect, it could damage the transaxle.
Do not add ATF over the specification. Otherwise, the transaxle performance
could be reduced and ATF could leak.
1. Remove a ...
Heater Core Inspection
1. Inspect the heater core for damage, cracks, and water leakage.
If there is any malfunction, replace the heater core.
2. Visually inspect the fins for bending.
If there is any bending, use the end of a flathead screwdriver to straighten
the fins.
3. Visually inspect ...