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: Bright-Metal Maintenance
Use tar remover to remove road tar and insects. Never do this with a knife or similar tool. To prevent corrosion on brightmetal surfaces, apply wax or chrome preservative and rub it to a high luster. During cold weather or in coastal areas, cover bright-metal parts with a coating of ...

Mazda 6 Service Manual: Traction Control System (TCS)
The Traction Control System (TCS) enhances traction and safety by controlling engine torque and braking. When the TCS detects driving wheel slippage, it lowers engine torque and operates the brakes to prevent loss of traction. This means that on a slick surface, the engine adjusts automatically ...