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: Using Automatic Locking Mode (Some models)
Follow these instructions when using a child-restraint system, unless you are attaching a LATCH-equipped childrestraint system to the rear LATCH lower anchors. Refer to “Using LATCH Lower Anchor”. NOTE Follow the child-restraint system manufacturer's instructions carefully. If you are no ...

Mazda 6 Service Manual: Opening the Hood
1. With the vehicle parked, pull the release handle to unlock the hood. 2. Insert your hand into the hood opening, slide the latch lever to the right, and lift up the hood. NOTE The lever is located a little to the left of center when facing the vehicle. 3. Grasp the support rod in the pad ...