Direct tire pressure monitoring (TPM)systems are being discussed. Technician A says the tire pressure sensor is a single unit with a built-in battery that measures tire pressure and temperature and transmits a signal and ID number for that particular tire. Technician B says the system does not require a relearn procedure after tires have been rotated or replaced because it knows the ID of each tire. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because direct TPM systems do indeed use sensors within each tire that measure pressure and temperature, and these sensors have built-in batteries to transmit data and an ID specific to each tire. Technician B is incorrect because after tires are rotated or replaced, a relearn procedure is typically necessary for the system to correctly identify the location of each tire based on its sensor ID.

Direct Tire Pressure Monitoring (TPM)systems Are Being Discussed