Anyone found an OBD2 phone app that will read transmission fluid temp?

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
IIRC... oil pressure is just the idiot light switch no specific pressure data.
Thanks.

Daggone it.

I mused in my other post whether this was just a "Close the switch on low pressure" switch.
 
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Kedis82ZE8

Contributor
V
'15 CX-5 GT AWD
I pulled my my boat and trailer (~1000 lbs) over pass this morning. I pushed her hard in the 75MPH range on some steep grades. Peak AT temp got up to around 208F (~97.77C). It normally ran in the 190s and about a 15 degree spread between the coolant and AT fluid as things heated up. That temp is still fine with this synthetic AT fluid.
 

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
I pulled my my boat and trailer (~1000 lbs) over pass this morning. I pushed her hard in the 75MPH range on some steep grades. Peak AT temp got up to around 208F (~97.77C). It normally ran in the 190s and about a 15 degree spread between the coolant and AT fluid as things heated up. That temp is still fine with this synthetic AT fluid.
Did you notice if the AT Temp tracked right with the coolant temp for an extended period of time? Did the AT Temp only rise when above that level when you put stress on the tranny?

Both temps have tracked 100% in synch with each other on my car, but I have not towed anything with it. After a while, you worry that they're reading from the same sensor/computer output.
 

Kedis82ZE8

Contributor
V
'15 CX-5 GT AWD
Mine is always a few degrees apart when there isn't a load and then noticeably rose during heavy load. It's obvious on mine there are different sensors being polled.

IMO: If you are seeing 100% sync with coolant you are not likely reading the AT temp probe but coolant.

What software/hardware are you using?

I was using OBDLink today with their OBD adapter.

https://www.amazon.com/OBDLink-Bluetooth-Professional-Grade-Diagnostic-Performance/dp/B07JFRFJG6



I was going to post a graph but I still had the log area setup to capture AT data for my GX 460. Maybe next time.

Another example during recent AT fluid swaps.. coolant warms up far faster than the AT. AT temp will be too cold still if you are using coolant as 122F temp indicator.

https://www.mazdas247.com/forum/showthread.php?123865316-Transmission-fluid-change-without-filter-replacement
 

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
Mine is always a few degrees apart when there isn't a load and then noticeably rose during heavy load. It's obvious on mine there are different sensors being polled.

IMO: If you are seeing 100% sync with coolant you are not likely reading the AT temp probe but coolant.

What software/hardware are you using?

I was using OBDLink today with their OBD adapter.

https://www.amazon.com/OBDLink-Bluetooth-Professional-Grade-Diagnostic-Performance/dp/B07JFRFJG6



I was going to post a graph but I still had the log area setup to capture AT data for my GX 460. Maybe next time.

Another example during recent AT fluid swaps.. coolant warms up far faster than the AT. AT temp will be too cold still if you are using coolant as 122F temp indicator.

https://www.mazdas247.com/forum/showthread.php?123865316-Transmission-fluid-change-without-filter-replacement
I have an OBDLink LX bluetooth and TorquePro.

In fact, I'm playing with the dash setup right now, trying to figure out how to set the scale on the gauges. I set the coolant max at 280, but it inserts one more increment labeled at minus 40. I have the same thing with the oil temp gauge, except the markings go negative on the entire right hand side of the dial. Makes no sense for default setup on temp gauges to do that.

I guess it's possible the trans temp is pulling from the same sensor/data point as the engine coolant, but the PID is labeled Trans Temp. I'm still on a learning curve, and the available Help data is lacking.
 

Kedis82ZE8

Contributor
V
'15 CX-5 GT AWD
I haven't used Torque in a while.

You might want to test out the free OBDLink that comes with OBDLinkMX+ and loaded up the free Mazda add-ons within the app.


Android - OBD Link


IOS - OBD Link


"Transmission Fluid Temperature" will show up under: Network A ---> Transmission Control Module

I need to play around and see if the "Torque Converter Lockup State" will display. It does on my other vehicles.
 

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
I haven't used Torque in a while.

You might want to test out the free OBDLink that comes with OBDLinkMX+ and loaded up the free Mazda add-ons within the app.


Android - OBD Link


IOS - OBD Link


"Transmission Fluid Temperature" will show up under: Network A ---> Transmission Control Module

I need to play around and see if the "Torque Converter Lockup State" will display. It does on my other vehicles.
Thanks for that.

I've loaded the app on a 7" tablet so I can have the larger display (versus a Smartphone) as an "extended dash," and I'm trying to get the apps to load on the 64gb SD Card I installed. They install such a small amount of memory on these things with no way to upgrade it. After I get that figured out, I can install a variety of these apps and see which works best...or maybe a combination of them will cover everything.

I like the reverse-display HUD feature TorquePro has. It can see using it regularly at night..

Out of curiosity, why are you interested in the "Torque Converter Lockup State"? I just looked at my TorquePro. That PID is not in it, but there are no Mazda-specific PIDs in this app.
 

Kedis82ZE8

Contributor
V
'15 CX-5 GT AWD
I want to see if in lockup state there is some AT cooling from what I am familiar with in other vehicles.

To add in the Enhanced Diagnostics in OBD Link/Fusion:

Settings - Get Extras



Forscan app should work for this as well. https://forscan.org/home.html
 

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
I want to see if in lockup state there is some AT cooling from what I am familiar with in other vehicles.

To add in the Enhanced Diagnostics in OBD Link/Fusion:

Settings - Get Extras



Forscan app should work for this as well. https://forscan.org/home.html
I installed the OBD app without any problems. I looked at "Extras" and see that they don't have PIDs for the 2019 Mazdas yet. I gotta call Customer Service and see when they anticipate a release date. The standard SAE PIDs don't have oil temp or tranny temp. Not sure what other Mazda measurements might be available in a specific PID set.
 

Avoidin Deer

Central Virginia
Contributor
V
2019 CX-5 Reserve
Just to follow up: I went on OBDLink's User Forum and saw that as of last week, they are waiting to get data from Mazda so they can build the PID Set for 2019. No ETA was given.

If OBDLink offers a full complement of Mazda PIDs, I believe I can port them over to TorquePro and keep that slick interface.
 
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