TPMS Thoughts (2019 CX-5 GT)

[shooter357]

My TPMS light came on the other morning in my 2019 CX 5 GT when I pulled out of my driveway and started down the street. When I got back home I pulled my trusty pancake compressor out and filled the tires. Since it doesn't indicate which tire is low I topped them all off. I assumed I would have to reset the light but could find no instructions in the owners manual. Went online and found several references to a button on the left of the steering on the lower dash. I don't have that. The next morning I drove out and the light reset itself. I started thinking about this event and thought since the sensors are in the wheels on the valve stems and are battery operated and programmable I would have thought they'd have to be reset remotely. Since they're expensive to replace I would think Mazda would have outfit the car with sensors that indicated which tire was low and the pressure in it.We do have the technology. My last car had the sensor system that worked off of rotation and I liked that type.

 

[N7turbo]

Reset is automatic. But yeah I don't understand why we can't see individual pressures. Even when they do implement it, like in the ND MX-5, it's buried in the menu.

 

[erhayes]

My CX5 2022 doesn't offer individually tire read-outs.

 

[paris1]

My TPMS light came on the other morning in my 2019 CX 5 GT when I pulled out of my driveway and started down the street. When I got back home I pulled my trusty pancake compressor out and filled the tires. Since it doesn't indicate which tire is low I topped them all off. I assumed I would have to reset the light but could find no instructions in the owners manual. Went online and found several references to a button on the left of the steering on the lower dash. I don't have that. The next morning I drove out and the light reset itself. I started thinking about this event and thought since the sensors are in the wheels on the valve stems and are battery operated and programmable I would have thought they'd have to be reset remotely. Since they're expensive to replace I would think Mazda would have outfit the car with sensors that indicated which tire was low and the pressure in it.We do have the technology. My last car had the sensor system that worked off of rotation and I liked that type.

I would have checked first with a tire gauge to see which one was low (unless you got a sense of that when you topped them up) so you could then figure out why (unless, of course, it was a false alarm, which these systems are prone to).

 

[Sig cx-5]

The reset button, resets the pressure to what the tires are currently inflated to. Did you take note of the pressures when you hit the button? No need to press it after filling to OEM spec's.

You should have been able to tell which one was low, using a pressure gauge.

 

[RedBaron]

The reset button, resets the pressure to what the tires are currently inflated to. Did you take note of the pressures when you hit the button? No need to press it after filling to OEM spec's.

The reset button only applies to earlier model years, without TPMS sensors, where differences in wheels rotation speed trigger the warning. For the later model years that DO have the TPMS sensors, the act of driving (movement) wakes the sensors and they report their pressures to the BCM, thus the car can cancel the alert.

Our '19 CX-5 works like this and has no individual readout (even though the car knows them). Our '23 CX-50 though, CAN display the individual pressures, both on the radio screen (buried under menus) and directly on the status screen of the Mazda Connect app. I would assume that recent years of the CX-5 with the 10" display will do the same(?)

UPDATE: Added the Mazda Connect app screen:

 

[sm1ke]

No reset button on dash = Direct TPMS system
Reset button = Indirect TPMS system

The direct system that you have uses sensors mounted to the tire's valve stem. This is typically what would allow you to see individual tire pressures if your vehicle's system allows for that. The benefit of this system is that the tire pressure is reported almost in real time, so if there is an issue with low pressure, you'll get the warning sooner rather than later. It also means that the tire pressure warning light will go off on it's own, no reset button or procedure is required.

I prefer direct over indirect, as it warns me of low pressures earlier and is much easier to reset. I have a very slow leak in one of my front tires, and the pressure will drop from 37psi to 25psi over 2-3 weeks. The car will usually warn me that the tire is low before I can turn the corner after backing out of my driveway. I carry a Ridgid portable inflator in the trunk and the light will usually go off on it's own while I'm filling the low tire.

 

[N7turbo]

Our '19 CX-5 works like this and has no individual readout (even though the car knows them). Our '23 CX-50 though, CAN display the individual pressures, both on the radio screen (buried under menus) and directly on the status screen of the Mazda Connect app. I would assume that recent years of the CX-5 with the 10" display will do the same(?)

Negative, Ghostrider.

 

[wlong01]

They got rid of the reset button sometime between 2016 and 2019 and replaced TPMS with sensors.
My 16 has the reset (which you press when you add/remove air from a tire) and our 19 has sensors which you don't have to reset.

 

[HyFlyer]

... Our '19 CX-5 works like this and has no individual readout (even though the car knows them) ...

Yep, not only is pressure transmitted from each wheel sensor, temperature is sent as well. Pressure and temperature are logged in the Instrument Cluster module. (But not displayed anywhere on the car itself. You'll need something like FORscan, scanguage, etc to see if real time).

 

[steve2150]

The reset button only applies to earlier model years, without TPMS sensors, where differences in wheels rotation speed trigger the warning. For the later model years that DO have the TPMS sensors, the act of driving (movement) wakes the sensors and they report their pressures to the BCM, thus the car can cancel the alert.

Our '19 CX-5 works like this and has no individual readout (even though the car knows them). Our '23 CX-50 though, CAN display the individual pressures, both on the radio screen (buried under menus) and directly on the status screen of the Mazda Connect app. I would assume that recent years of the CX-5 with the 10" display will do the same(?)

UPDATE: Added the Mazda Connect app screen:
View attachment 331655

I just got my 2025 CX-5 Premium Plus and it does not show tire pressures on the app, how where you able to

 

[stickerbush]

I just got my 2025 CX-5 Premium Plus and it does not show tire pressures on the app, how where you able to

On CX-50, not on CX-5

 

[RedBaron]

I just got my 2025 CX-5 Premium Plus and it does not show tire pressures on the app, how where you able to

On CX-50, not on CX-5

Yes, on my CX-50. But I find it truly strange that the CX-5, with pretty much the same software, certainly the same app, does not! Bizarre.