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: Radar Sensor (Front) (Some models)
Your vehicle is equipped with a radar sensor (front). The following systems also use the radar sensor (front). Distance Recognition Support System (DRSS) Mazda Radar Cruise Control (MRCC) Smart Brake Support (SBS) The radar sensor (front) functions by detecting the radio waves reflected ...

Mazda 6 Service Manual: Checking Tire Pressure
1. When you check the air pressure, make sure the tires are cold —meaning they are not hot from driving even a mile. 2. Remove the cap from the valve on one tire. 3. Firmly press a tire gauge onto the valve. 4. Add air to achieve recommended air pressure. 5. If you overfill the tire, release ...