The system should measure the difference in the 4 tires rolling speed and should not be impacted by temp. When you reset the system, are you getting two flashes from the dash light and a beep following the manual?:
1. Park the car in a safe place and firmly
apply the parking brake.
2. Let the tires cool, and adjust the tire
pressure to the specified pressure
indicated on the tire pressure label on
all four tires.
3. Switch the ignition ON.
4. While the vehicle is parked, press and
hold the tire pressure monitoring
system set switch and verify that the
tire pressure monitoring system
warning light in the instrument cluster
flashes twice and a beep sound is heard
once.