Mazda 6 Service Manual: No.23 a/c does not work sufficiently

No.22 vibration concerns (engine)

No.24 a/c is always on or a/c compressor runs continuously

Other materials:

Mazda 6 Service Manual: Split Folding
By lowering the rear seatbacks the luggage compartment space can be expanded. WARNING Do not drive the vehicle with occupants on folded down seatbacks or in the luggage compartment.  Putting occupants in the luggage compartment is dangerous because seat belts cannot be fastened which coul ...

Mazda 6 Service Manual: Transaxle fluid temperature (tft) sensor inspection
On-Vehicle Inspection 1. Disconnect the negative battery cable. 2. Remove the air cleaner component. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) Caution Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign object ...