My garage opener remote on my 2003 santa fe just stopped working. How can I fix it?

There is a battery in the remote.If the battery gets old the remote will stop working.Replace the battery and check.Also if your battery is new but still the problem is there then,try to open the garage door by keeping less distance between remote as well as the garage door.Also there is a sensor in the garage door.If that sensor is not functioning then this can be one issue.In some cases the internal remote circuit gets short,in that case the remote needs replacement.But does the garage door sensor light shows any sign of getting connection from remote when you press the remote button.Open the door and try to close the door with remote and check.As per the problem,in most cases its weak battery related problem,and replacing the battery solves the problem.You can try all the possibilities and see which one helps.Thanks.Helpmech.