1. Insert a screwdriver between the mirror and the base.

2. Push the base pin down to remove the rearview mirror.
Rearview mirror
Rearview mirror installationMazda 6 Service Manual: Automatic Transaxle Controls
   
Various Lockouts:
 Indicates that you must depress the brake 
pedal and hold in the lock-release button to shift (The ignition must be switched 
ON).
 Indicates the shift lever can be shifted 
freely into any position.
 Indicates that you must hold in the lock-release 
button to shift.
N ...
   
Mazda 6 Service Manual: Oil cooler flushing
   Note
	The contaminated cooler line (oil pipes and hoses) and auxiliary 
	cooler must be flushed completely when ATX is overhauled or replaced.
1. Remove the two oil cooler line hoses and apply air pressure of 196 kPa 
{2.0 kgf/cm2, 28 psi} from the return hose (pipe) side.
Caution
	Power ...