First, I would try syncing your FOB with the car.
If I recall:
put key into ignition,
turn on (but do not start car),
hold unlock while the key is in the ignition for 5 seconds or so
turn off, remove key, try fob.
Do this with the second fob as well.
Are your plenum drains clear?
your carpet/padding by the dead pedal dry or wet?
When my 02 GLX wagon had a tailgate NOT unlocking electronically issue, was the lock actuator. 5 bucks from the salvage yard. PITA to remove and replace, but didn't take too long.
If I recall:
put key into ignition,
turn on (but do not start car),
hold unlock while the key is in the ignition for 5 seconds or so
turn off, remove key, try fob.
Do this with the second fob as well.
Are your plenum drains clear?
your carpet/padding by the dead pedal dry or wet?
When my 02 GLX wagon had a tailgate NOT unlocking electronically issue, was the lock actuator. 5 bucks from the salvage yard. PITA to remove and replace, but didn't take too long.