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: Battery Runs Out
Jump-Starting Jump-starting is dangerous if done incorrectly. So follow the procedure carefully. If you feel unsure about jump-starting, we strongly recommend that you have a competent service technician do the work. WARNING Follow These Precautions Carefully: To ensure safe and correct ha ...

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 ...