the dealer does it with a scan tool
You have to program it with a DRB (Scan tool).
I had the same problem. Google "keyless entry remote 2003 Jeep Grand Cherokee".
dealer has to do it with factory scan tool
it has to be done by the dealer. =(
Possible weak battery in the remote.
I had to replace a keyless remote for my 2001 dakota. I found one off od E-bay then I had to program it using the programing sequence in the owners manual. It was really simple. I only paid something like ten buck for the remote and have had no problems.
centre top dashboard (red dome)
how do you program a keyless entry remote to a 2000 Pontiac grandprix programyourremote.com (program your remote.com)
To reprogram a 2000 Jeep Grand Cherokee keyless entry remote, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Within 10 seconds, turn the key to the "Off" position and back to "On" three times, ending in the "On" position. After a chime sounds, press any button on the remote to program it. Repeat this step for additional remotes, then turn the ignition to "Off" to exit programming mode.
go to http://www.programyourremote.com/ they have programs for many makes and models
I am trying to find out how to do the reprogramming, but haven't found out how, but did find out that from 1999- 2004 the door lock fobs are interchangeable. You may need to take to Jeep dealer to actually get it programmed, but at least you won't have to buy a new fob.
Try the mirror control.