A few days ago the central locking control on my vehicle was not working properly and today it definitely did not work anymore.
It is the remote that comes inserted in the key, the button that when pressed locks or unlocks the doors. Since it was not working I had to do it manually and it was very annoying to have to close the door manually every time I got out of the car, which means I almost always have things in my hands and it is difficult for me to open the doors with the key, pressing the button makes everything much easier and we realize that it is like this when the usual thing stops working and we have more work to do the same task.
Then I deduced that the remote simply did not have enough battery to emit a signal so I got home and took the battery from another unused key, changed it and then it worked correctly.
To do this, the first thing is to disassemble the key, remove the circuit where the battery is inserted, and then we see the battery model, in this case it is a BR 1220, we remove the old battery and put in the new one, we must respect the polarity, after all that it is closed and the test is performed. In my case it was just that and it worked perfectly.
