I had a similiar problem and was content to continue using the key to unlock the drivers door.
This all came to an end when the door key mechanism sheared off.when I was miles from home.Pain in the backside having to climb in via the front passenger seat.It was that or leave the doors open.
Needlless to say not only a new door mechanism, but a new exterior drivers door handle.
The latter only obtainable from the main dealer,with vehicle vin no etc.
I should have bitten the bullet earliar and saved myself a couple of bob.