Hi, my name is***** your mechanic automotive expert, and I will be happy to assist you today. In some cases, I may need more information to assist better. I apologize for any delay and would like to know whom i am having the pleasure to chat with.
Dear customer, it is normal that sometimes when the battery of a key gets discharged, the keyfob loses the configuration with one of the vehicle's recognition systems, in this case it loses the configuration with the central locking system, that is why it is not working properly correct.
Solving this is not complicated but unfortunately you will need a special equipment that programs this type of keys and controls, this is not complicated to achieve and in reality there are many companies that do it,Locksmith companies they are the same companies that open vehicles, program controls, duplicate keys, etc. They even go to the vehicle and perform the respective procedure.
I hope this info to be helpful, my goal is to give you the best advice i can, I hope to be helpful, if you have any doubt or want to know anything else please do not hesitate to reply back.
Kind regards, Sebastian.