Why my grand ஐ10 ரிமோட் key ஐஎஸ் not working while pressing lock button...but it works while pressing unlock button.What ஐஎஸ் the problem?

The issue could be anything, we would suggest you to give a try by replacing the battery. If it does work then visit the nearest service center as they would be the better people to assist you by inspecting it. You can click on the following link to see the details of the nearest service centre and selecting your city accordingly - Service centre.

I want brought a i10 grant cng car

Nicecar