To add to King Titan's scoop...
Some general info on the operation/specifications of the Low Tire Pressure Warning System:
Every Titan has a Low Tire Pressure Warning System. The Low Tire Pressure Warning System will warn the driver (by way of a 10 second buzzer and a light on the instrument cluster) if any tire pressure falls below 28psi. Some Titans come equipped with a monitoring system which displays individual tire pressures as well.
The Low Tire Pressure Warning System must be reset after replacement of a low tire pressure warning transmitter, BCM or tire rotation.
Reading through the service manuals, it appears that there is no way for the end-user to re-initialize the system.
That means that I can't change out my own wheels/tires in my garage and have an active Low Tire Pressure Warning System. Even if I have a second set of OEM wheels/tires, each with their own internal pressure transmitter, I have to go to the dealer to have the system relearn the sensors.
The local dealership tells me that there is no way to perform sensor ID registration without their special tools.
Calling 1.800.NISSAN.1 and speaking with the new vehicle information department in Texas (option 3), the only resident Titan specialist (named Mike) tells me that there is a way to do this manually, but he does not know it.
Calling 1.800.NISSAN.1 and speaking with the Consumer Affairs division in California, I'm told that they'll get back to me...
Hmmphhh...