TPMS question

[fungo45]

I just had the tires replaced on my car, and am having issues with the TPMS sensors. When the shop replaced the tires, they broke one of the sensors, and replaced it at no charge. They bought the sensor at Napa for $80.

Later that night, the TPMS light came on. I went back to the shop the next day, and they cleared the code. Of course, the TPMS light was on later that day. Took it back, and they used their sensor tools, which showed that all four tires are sending a signal. They suggested I bring it to the dealer as they didn't have the diagnostic tools to figure it out.

Took it to Hyundai, who said that the sensor the tire shop used is not working. Took it back to the tire shop. Again, they said the sensor is showing that it's sending a signal. Their conclusion was that the sensor is working, but not sending the right frequency to the car and therefore the car doesn't think there is a sensor at all. They are planning on replacing the Napa sensor with another brand to see if that works.

Does this make sense? Can the frequency be changed? I hope it's not a problem where only the OEM sensors work with the car. The dealer, by the way, wants $252 to put in a new sensor.

 

[LandoAWD]

OEMs will self calibrate. There are a few other sensors on the market that will as well.

Was the TPMS actually branded "Napa", or resold?

 

[fungo45]

OEMs will self calibrate. There are a few other sensors on the market that will as well.

Was the TPMS actually branded "Napa", or resold?

No idea. They just told me they bought it at Napa.

 

[fungo45]

Just to close the loop on this one. The original sensor they put in was apparently a universal sensor that is supposed to work with most cars. It apparently doesn't work with a Genesis. It was technically functioning, as it was putting out a signal (which the tire shop's tools were picking up). They replaced it with a TPMS sensor specific to the Genesis, and all is right again.