I just put in new batteries 2 weeks ago in my remoteand the alarm was working fine. This morning I went to unlock the car and disarm the alarm but the remote wouldn't work. I stuck the key and and unlocked the car and that works fine. But when I go to use theremote again to lock it wouldn't work. Has anyone every ran into this before? I could use some help. Key works fine its just the remote is not locking or unlocking the car.

 

search, there are lots of threads on how to reprogram your remote depending on the year of your car.