I think that TPMS dash (Package Tray) radios are very low powered and subject to minor issues such as low TPMS sensor batteries and RF interference). I had the TPMS sensors replaced in my driver (2015 Chevy Trax) when I replaced the OEM tires. The shop calibrated the new sensors and they were fine for 2 years. I was using a 1st Gen Valentine One radar detector and then began using a V1 G2 Valentine One detector and WHAM! Instantly began getting a right rear TPMS "Can't communicate" message on the Trax dash display. I'd installed the new V1 on the windshield, right over the dash where the TPMS module and antenna were mounted (Same location I used the older model V1). I have a GM TPMS reset tool and removing the new V1, resetting the sensors made everything work. Reinstalling the V1 - Wham. No RR sensor. A few months later, there was an unrelated Valentine software update, which, after installing, there is no longer RF interference. This is anecdotal - I cannot claim the V1 was interfering with the TPMS receiver. But the coincidence is strong. My working hypothesis is that TPMS sensors and the dash mounted transceivers are too low powered and susceptible to low batteries and other radio and electrical interference. Wierd huh?
JG Pasterjak
Tech Editor & Production Manager
4/17/25 9:52 a.m.
AndyHess said:
I think that TPMS dash (Package Tray) radios are very low powered and subject to minor issues such as low TPMS sensor batteries and RF interference). I had the TPMS sensors replaced in my driver (2015 Chevy Trax) when I replaced the OEM tires. The shop calibrated the new sensors and they were fine for 2 years. I was using a 1st Gen Valentine One radar detector and then began using a V1 G2 Valentine One detector and WHAM! Instantly began getting a right rear TPMS "Can't communicate" message on the Trax dash display. I'd installed the new V1 on the windshield, right over the dash where the TPMS module and antenna were mounted (Same location I used the older model V1). I have a GM TPMS reset tool and removing the new V1, resetting the sensors made everything work. Reinstalling the V1 - Wham. No RR sensor. A few months later, there was an unrelated Valentine software update, which, after installing, there is no longer RF interference. This is anecdotal - I cannot claim the V1 was interfering with the TPMS receiver. But the coincidence is strong. My working hypothesis is that TPMS sensors and the dash mounted transceivers are too low powered and susceptible to low batteries and other radio and electrical interference. Wierd huh?
Yeah it's a single point of coincidence, but it also sounds really plausible. Ultimately this is kind of why Phil and I came to the conclusion that while the problem may be fixed, neither of us feel satisfied that WE fixed it. There's just so many variables in the equation that we didn't so much solve for as just eliminate altogether.
