TPMS system that will read existing auto sensors. ?

[jgolden]

This may be a dream, but are there any TPMS that will read signals from existing sensors in my 2015 GMC Terrrain or any other sensors?

[bob_nestor]

Alan_Hepburn wrote:

EsoxLucius wrote:
So there is no way to get a TPMS readout in my LTV Unity motorhome from the factory TPMS on my Hyundai Accent toad?

Well, you could use a spectrum analyzer to find out what frequency signal that your factory TPMS sensors are sending to the car's computer. You could then build a receiver to receive that frequency. Next you'll need to figure out how the data is modulated onto the carrier so you can properly demodulate it. Then you'll need to be able to decipher that data to find out how to read it - probably a piece of cake for the NSA and certainly possible for a serious hobbyist...

For $100 I purchased a kit off Amazon that includes sensors which screw onto the valve stems and a small button size receiver that plugs into the 12v outlet. When I tow my Wrangler I replace the valve caps with the sensors and put the receiver in the RV. Works like a champ and I get both pressure and temp, something the OEM system on the Wrangler doesn't provide. Much simpler than dealing with reverse engineering things on the Wrangler.

[eheading]

I suspect that the sensors in our Prius and Mini Cooper as well as the ones we had on our Tracker, and Nissan Versa do not even transmit specific temperatures. I suspect they just transmit when the low limit is reached.

Ed Headington

[Alan_Hepburn]

EsoxLucius wrote:
So there is no way to get a TPMS readout in my LTV Unity motorhome from the factory TPMS on my Hyundai Accent toad?

Well, you could use a spectrum analyzer to find out what frequency signal that your factory TPMS sensors are sending to the car's computer. You could then build a receiver to receive that frequency. Next you'll need to figure out how the data is modulated onto the carrier so you can properly demodulate it. Then you'll need to be able to decipher that data to find out how to read it - probably a piece of cake for the NSA and certainly possible for a serious hobbyist...

[EsoxLucius]

Dutch_12078 wrote:
No... Each manufacturer uses its own proprietary coding system for their onboard TPMS, and not all models even use radio signals. At this point, a universal TPMS monitor just isn't going to happen anytime soon. You can use an add-on TPMS system on your toad though, to monitor the toad tires in your coach. And yes, it would be nice to not have to buy the additional sensors.

So there is no way to get a TPMS readout in my LTV Unity motorhome from the factory TPMS on my Hyundai Accent toad?

[jgolden]

rexlion wrote:
Wake up... you were having a dream. 😉

Gee Ma do I have to wake up.........:Z

[rexlion]

Wake up... you were having a dream. 😉

[lanerd]

You're not the first to think of this...it's been asked here several times in the past with the same answer.. No.

Our Terrain has the factory TPMS and it would be great if my Pressure Pro TPMS installed on our mh would pick up the signals from the Terrain, but alas...not a chance. I had to upgrade ($$) my monitor to handle the 8 tires on the mh and the five on the Terrain.

Ron

[Big_Katuna]

I have thought of that as well. Thought maybe something that plugs into the OBD port or even just an optical transistor that you mount over their light but that would mean leaving the ignition on.

Seems like a shame that there is a TPMS sitting there not being used.

[Dutch_12078]

No... Each manufacturer uses its own proprietary coding system for their onboard TPMS, and not all models even use radio signals. At this point, a universal TPMS monitor just isn't going to happen anytime soon. You can use an add-on TPMS system on your toad though, to monitor the toad tires in your coach. And yes, it would be nice to not have to buy the additional sensors.