Dear customer, i apologize for my long delay to get back to you.
I had some connectivity problems.
Dear customer, your porsche has a system in charge of the doors known as central locking, which is made up of a module that receives the signal from the fob and emits the signal to block or open the door selenoids, and you porsche is 2000, so it is normalthis type of problems to begin to occur.
The reviews that must be carried out begin with a verification of the fuses located under the dashboard since here are the fuses and relays in charge of the central locking system, sometimes they can be burned or stuck, causing thecentral locking system to be canceled.
In addition to the fuses, the state of the relays must be verified, when the central locking system is activated, you usually hear a noise at the bottom of the panel, what you are hearing when activating central locking is a click that produces the relay of this system, it sends the signal to the door selenoids, it is very likely that it is stuck and that you should replace it.
if everything is correct, I am concerned that the damage comes from the central locking module, as you understand the central locking module is the module in charge of sending the signal to the doors, it is very likely that the fault is in the relay but Otherwise, you must disassemble the module and take it to a review, not without first checking the state of the module connections, since they can leak or rust, creating loss of signals to the module.