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: Service cautions
HANDLING INSUFFICIENT REFRIGERANT LEVEL If an insufficient refrigerant level is detected at troubleshooting, do not charge (add) the refrigerant. Because an accurate amount of refrigerant cannot be determined from the pressure indicated on the manifold gauge, never charge the refrigeran ...

Mazda 6 Service Manual: Headlight bulb removal/installation
Low-beam Halogen type 1. Disconnect the negative battery cable. 2. Disconnect the front combination light. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION) 3. Remove in the order indicated in the table. Caution A halogen bulb generates extremely high heat when it is used. If the ...