Mazda 6 Service Manual: No.22 vibration concerns (engine)

No.21 engine noise

No.23 a/c does not work sufficiently

Other materials:

Mazda 6 Service Manual: Lane-Change Signals and Three-Flash Turn Signal
Lane-Change Signals Move the lever halfway toward the direction of the lane change—until the indicator flashes— and hold it there. It will return to the off position when released. Three-Flash Turn Signal After releasing the turn signal lever, the turn signal indicator flashes three times ...

Mazda 6 Service Manual: Maintenance Monitor
The following maintenance period notifications can be displayed by turning the Maintenance Monitor on. Scheduled Maintenance Tire Rotation Oil Change For the setting method and indications for the maintenance monitor, refer to the Maintenance Monitor. The maintenance monitor displays ...