Does anyone use OBD Gauge for monitoring RPM and water temperature?

I use a ScanGauge. It works well, and uses very little sleep power when the car is off.

Water temperature is a number I usually have on the display. RPM isn't. I had it displayed for a while out of curiosity when I first got the ScanGauge, but it's just not that interesting in a Prius; the engine is always being managed by the car, it does what it does, and after that initial curiosity, the urge to hover and second-guess it sort of fades.

 

On my 2026 LE, I use the OBD Fusion or Car Scanner app, both of which display on the infotainment screen via CarPlay.

 

P10 for years monitoring engine temp and aux battery. Has user set alarm limits.

 

Interesting! Does a 2026 LE have an engine oil temperature sensor, then?

I wonder why it would be that much cooler than the coolant.

 

I use a V-gate vLinker FS Bluetooth OBD2 Scanner with the Torque Pro and AATorque app on Android Auto.
This allows you to display lots of parameters on the central display with Android Auto including, RPM, coolant temp, oil temp, Volts, SOC, speed, LTFT1, AFR, MAF, timing Adv, etc...
There are hundreds of parameters displayable on up to 10 panels with dial or digital display.
I wouldn't do without it anymore, since I use it continuously.

 

I've been in iPhone world for a relatively short time, but I've got no experience with Android Auto.

Car Scanner has a profile for Gen5 "Primes" that provides hybrid-type data.
No dials on CarPlay.

 

Sweet!

 

there. What you meant by "Car Scanner has a profile for Gen5 "Primes" that provides hybrid-type data.", is that the app name or the just general car scanner OBD device? I looking for more MPG data, I used to track my mileage and mpg, but now with Hybrid, I havn't figure out best way to calculate MPG per Electric or per Gas. Any info is helpful, Thanks

 

Car scanner is an app. It has a prime profile that can be used.

I do not have a prime. Some one with a prime aka phev will have to help you.

Perhaps @Gokhan can chime in?

 

I've had a Scan Gauge, it's about $150, but with the Prius phone apps and a Bluetooth OBD dongle it's more affordable. I have RPM to watch going up hills. Coolant temp, intake air temp

 

I have found that Car Scanner to be a phone battery hog. I can't see anything I did wrong in setting it up. Perhaps someone else will corroborate. OBD Fusion sips the juice.

 

I used a Scangauge II, to monitor engine coolant temp, but ceased when it was the apparent culprit in a series of communication errors, that triggered Check Hybrid System alerts and put the brakes in a fail-safe mode.

It’s too bad Toyota doesn’t have an officially vetted method, in the dashboard, to display such information.

 

No problems, knock on wood, so far with a bluetooth dongle.

 

Pushing ten years with a P10 obd2 scanner directly hitting the can bus whenever the car is running.

Two possible issues are a) the obd2 connector is always powered so your addon has to be properly engineered and setup to sleep and b) don't setup obd2 devices to scan(gauge) more data than needed.

 

My ScanGauge II (identical device) has caused no such issue in 15 years connected all the time, so I strongly doubt anything the device does was responsible. If I started seeing such behavior, I think I would first try to clean up its cable and the car's connector with contact cleaner and see what that did.

I very definitely did see the same kind of issues with a different device device I had, which had non-plated connector pins. I replaced its connector with a pennies-more-expensive gold-plated pins version, goodbye issue.

 

The dealership mechanic's speculation was it was the constant weight, perhaps more succinctly the mass, on the obd connection. He noticed when he wiggled his Techstream connector there were drop-outs.

The CHS alerts and work-to-rule brakes was happening with increasing frequency. After disconnection they were no more.

Perhaps my OBD port was built/installed on a Friday afternoon, who knows. Just my experience.

 

Yes, the cable connecting my ScanGauge II has a 90° connector where it connects to the car, so there is not much weight bouncing far out from the connector, and I made sure the cable is well-supported nearby, going up above the trim panel. So far there hasn't been any sign of physical wear to the port.

The effect of such wear would be poor electrical contact at some pins, so cleaning up the pins would still be my first reaction if I started seeing any such sign.

 

Having the CarPlay/Android Auto option is quite nice on the Gen5.
For this is, after all, a Gen5 thread.....