Question

A TPMS (tire pressure monitoring system) sensor is being replaced. Technician A says that a magnet is used to activate the new sensor. Tech B says that on some vehicle, the new sensor may have to be relearned by the TPMS module. Who is correct?

Answer 1

Technician A is correct that a magnet is used to activate the new TPMS sensor, and Technician B is correct that on some vehicles, a relearning process may be necessary.

Step-by-step explanation:

Technician A is correct. When replacing a TPMS sensor, a magnet is typically used to activate the new sensor. The sensor is dormant until the magnet is applied, which triggers the sensor to start transmitting data.

Technician B is also correct. Some vehicles require a relearning process after a new sensor is installed. This is because the TPMS module needs to recognize the new sensor and sync its data with the rest of the system. This relearning process can usually be done using a specific procedure, such as driving the vehicle at a certain speed for a certain amount of time.