If it is engaged the door will not open from the inside by design.
Mazda 6 door wont open from inside or outside.
Remove the window crank in cars with manual windows.
Given that this is an 08.
In hot weather temperatures inside a vehicle can become high enough to cause brain damage or even death.
It wouldnt be uncommon for most vehicles for the lock actuator solenoid duty actuator to wear out get weak and fail.
You will have to remove the door panel to gain access to the door latch.
If you cannot unlock the drivers door and open it from the inside or outside you probably have a faulty door latch.
I have a 2010 mazda 6 the rear passenger side door wont open from inside or outside.
Look for a screw in the bezel under the handle lever.
Remove the inner door handle.
Do not leave the key in your vehicle with children and keep them in a place where your children will not find or play with them.
Thanks we have the same problem and we are now at that stage of having the door panel partially open.
The lock apears to be locking and answered by a verified mazda mechanic.
There will either be a screw in the center of the handle or a retaining clip on the back side of the handle.
Once you remove the door panel attempt to manually pull on the inside and outside door handle rods.
This is most probable.
This is very difficult.
There is no keyless entry system but she can lock unlock all the doors with the key.