If the selector lever will not move from P using the proper shift procedure, continue to hold down the brake pedal.
1. Remove the shift-lock override cover using a cloth-wrapped flat head screwdriver.
2. Insert a screwdriver and push it down.

3. Press and hold the lock-release button.
4. Move the selector lever.
Take the vehicle to an Authorized Mazda Dealer to have the system checked.
Shift-Lock System
Transaxle RangesMazda 6 Owners Manual: Drive shaft removal/installation
Caution
Performing the following procedures without first removing the ABS
wheel-speed sensor may possibly cause an open circuit in the harness if it
is pulled by mistake. Before performing the following procedures, remove the
ABS wheel-speed sensor (axle side) and fix it to an appropri ...
Mazda 6 Owners Manual: Control valve body installation
On-Vehicle Installation
Caution
Be sure to align the parking rod and the manual valve.
1. Install the accumulator springs and accumulators into the transaxle case.
2. Install the control valve body component.
Tightening torque
7.8-10.8 N·m
{80-110 kgf·cm, 70-95 in·lbf}
Bo ...