Nissan Repair: Remote Control Key, vehicle security system, nissan repair

Question
Hello
I have Nissan Sunny classic 2010 N16 QG16NE Med East. Suddenly, the remote control open/lock device don't work. I replace the battery and also it is not work. In addition, I try some steps to reprogram it, also they are not operable (my remote don't sense).
Please how can I know where is the problem? Is there in remote device or other such as main security device? How can I check the working state of remote device.

Answer
The vehicle security system is controlled by the BCM, (Body Control, Module) which a small device behind the dashboard and it looks like the Electronic Control Module known as the computer. I don't believe there is any further action you can take yourself to correct the problem. Please take the vehicle to a qualified Nissan repair facility to find out if the BCM had failed or it will need reprogramming.