The TPMS 'computer' is the Universal Garage Door Opener/Tire Pressure Monitoring System (Homelink)... there are two part numbers listed in the parts manual....

05099158AA

05102560AA Export

Try looking it up online and see what you can find.... You will probably still have to have them connect up the DRBIII and program the sensors in.... but maybe not.... the service manual says it just snaps out and back in...