You can confirm and change the registered device details. 
Bluetooth device registration status 1. Display the "Bluetooth Setup" screen. 2. Select the device. 3. Select "Device Info". 4. Following screen is displayed: 
 
 Changing connection method 1. Select "Connect Audio Player from". 2. Select "Vehicle" or "Device". "Vehicle": Connect the multimedia system to the portable audio player. "Device": Connect the portable audio player to the multimedia system.  | 
Toyota Tundra Service Manual > Tire Pressure Warning System: Initialization Switch (for Test Mode DTC) (C2198/98)
   DESCRIPTION During test mode, when the tire pressure warning reset switch is on, the tire pressure warning light comes on and when the tire pressure warning reset switch is off, the tire pressure warning light blinks at 0.125 second intervals. DTC No. Detection Item DTC Detection Condition Trouble A ...