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: 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: Crash zone sensor removal/installation
Warning Handling the crash zone sensor improperly can accidentally deploy the air bag module and pre-tensioner seat belt, which may seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling the crash zone sensor. (See SERVICE WARNINGS.) 1. Turn the ignition switch to LO ...