Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: Windshield Defrosting and Defogging
1. Set the mode selector dial to the position. 2. Set the temperature control dial to the desired position. 3. Set the fan control dial to the desired speed. 4. If dehumidified heating is desired, turn on the air conditioner. WARNING Do not defog the windshield using the position with the t ...

Mazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more than about 25 km/h (16 mph). WARNING Do not use the cruise control under the following conditions: Using the cruise control under the following conditions is dangerous and could result in loss of vehicle control. ...