Bonjour
J'ai un s 204 de 2009 je suis tombé en panne de batterie et depuis aucune de mes deux clés n ai en mesure d'ouvrir ou fermer la voiture est-ce qu'il y aurait une âme charitable pour m'aider car là je sèche complètement

 

Are you saying that the battery in your car is dead and you cannot unlock the doors? If so use the metal key that is in the key fob, it will unlock the doors.

 

Bonjour ce n'est pas exactement ça entre-temps j'ai pu changer la batterie les portes sont ouverts mais quand je veux refermer les portes à clé plus rien ne se ferme à clé plip et j'ai le double des clés et le double c'est pareil

 

Let me try to translate using my high school French.
Greetings, this isn’t precisely that sometimes I have to switch the battery doors to open, but when I want to close it again, the doors do a lot of t nothing.
Not closing ( something) I have twice as many and the twice is better.

I have about 50% confidence that I have translated correctly.

 

You replaced the cars battery, now the key fob will unlock the doors but will not lock the doors?

When was the last time you replaced the key fob batteries? I would put a fresh battery in and see if it works.

If the batteries are good try unlocking the car and opening the windows with the key. Stand next to the car and point the key fob right at the drivers door handle, press and hold the "unlock" button until the doors unlock and windows go down.

Then try to lock the car and close all the windows. Again stand next to the car pointing the key fob right at the door handle, press and hold the "lock" button and see if the doors lock and windows go up.

I find it odd that it will unlock but not lock. Maybe try reprogramming the key. I read a few ways to do this so not sure which one is correct.

Try:

1- Put key in ignition and turn to position 1.
2- Hold "lock" button for 5 seconds.
3- Hold "unlock" button for 5 seconds.
4- Hold both "Lock/Unlock" buttons for 5 seconds.
5- Turn key to position 2.
6- Repeat previous steps 2-4.