Mazda 6 Service Manual: No.9 abnormal shifting

No.8 does not shift to fourth gear (4gr)

No.10 frequent shifting

Other materials:

Mazda 6 Service Manual: Shift-Lock Override
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. Mov ...

Mazda 6 Service Manual: Disconnection of the negative battery cable
Before beginning any work, turn the ignition switch to LOCK position, then disconnect the negative battery cable and wait for more than 1 minute to allow the backup power supply of the SAS unit to deplete its stored power. Disconnecting the battery cable will delete the memories of the ...