Patent ID: 8332103

Claim:
A method for performing auto-location of a wheel in a vehicle using wheel phase angle information, comprising the steps of: arranging a wheel unit to be associated with a wheel of the vehicle, the wheel unit comprising a tire pressure monitoring sensor and a wheel phase angle sensor and the wheel unit transmitting tire pressure measured by the tire pressure monitoring sensor; arranging an antilock brake system (“ABS”) sensor to be associated with each wheel of the vehicle, the ABS sensor producing ABS data indicative of the wheel phase angle; upon rotation of the wheel, measuring a wheel phase angle at a first time (T 1 ) and at a second time (T 2 ) with the wheel phase angle sensor; at the second time (T 2 ), transmitting from the wheel unit a frame of data comprising wheel phase angle information and an identification of the tire pressure monitoring sensor; at an electronic control unit (“ECU”), receiving the frame of data and calculating, by a processor, the first time (T 1 ) based on a predetermined time delay; receiving the ABS data associated with each wheel; correlating, by the processor., the wheel phase angle information with the ABS data at the calculated first time (T 1 ) and the second time (T 2 ); and assigning the identification to a location of the wheel whose ABS data matches with the wheel phase angle information.