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: Audio control switch inspection
1. Disconnect the negative battery cable. 2. Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.) 3. Disconnect the audio control switch connector. 4. Measure the resistance and inspect for continuity between the cruise control switch terminals using a ...

Mazda 6 Service Manual: Lights-On Reminder
The lights-on reminder is operable when the time setting*1 of the auto headlight off function is off. If lights are on and the ignition is switched to ACC or off, a continuous beep sound will be heard when the driver's door is opened. *1 If the light switch is left on, the auto headlight off f ...