Ditto.. try reinitializing your keys. Yes...keys...you will need to do both during the same session. If you do only one key...the one not present will no longer lock/unlock & arm/disarm the vehicle.

The instructions below are the same as at the link given above (but with nice illustration ). Make sure you FOLLOW the instruction to the "T"...skipping, combining, overlooking, fudging any of the steps may result in failure to program. Remember to NOT insert the 2nd key into the ignition...start its programming from STEP 3 where it says to PRESS & HOLD button 2:

TIP: KL R = ignition position 1