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

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Mazda 6 Service Manual: Bluetooth® Preparation
Device pairing To use Bluetooth® audio and Hands-Free, the device equipped with Bluetooth® has to be paired to the unit using the following procedure. A maximum of seven devices including Bluetooth® audio devices and hands-free mobile phones can be paired. NOTE The Bluetooth® system ma ...

Mazda 6 Service Manual: Climate control unit installation
1. Pass each wire through the following routes then connect to A/C unit. (Manual air conditioner) 2. Connect the climate control unit connectors. (Manual air conditioner) 3. Install the climate control unit to the center panel. (Full-auto air conditioner) 4. Install the center panel. 5. Ad ...