rbkepler

Leaving the vehicle, I usually used to depress the interior door lock and both doors would lock. Last year the drivers door has to be manually locked by sliding the lever.
A few months ago the passenger door started doing the same thing.
BUT when I go into Drive and the vehicle starts moving both doors lock automatically - they also unlock when the vehicle goes into Park.

Someone told me it was a computer issue. Someone said it was just a switch and another said it was some sort of door lock actuator.
Greatly appreciate some help from experience before I have to invest in service charges
Thanks