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: Foreword
When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to following flowchart. - If a DTC exists, diagnose the applicable DTC inspection. (See DTC TABLE.) - ...

Mazda 6 Service Manual: Fog Lights (Some models)
The fog lights can be turned on with the ignition switched ON and the headlights turned on. Use this switch to turn on the fog lights. The fog lights will improve visibility at night and during foggy conditions. The fog lights turn on when the fog light switch is turned to the position and t ...