My car has a bell sound when I turn left. The A/C was on (I haven’t tried with it off.) I know the car is old but it runs great (except perhaps for the bell? Maybe not!)
Can you post a sound clip when its happening?
It probably thinks the door is open when you turn…or the ignition switch is getting worn out and losing connection to some portion of the system…and triggering the warning bell.
See if you can move your doors in or out just a fraction…and if you can does it trigger the bell? Sounds like something of this nature. This will most likely be solved by your investigations not ours…