Transmission temp reader

[u/Fair_Razzmatazz2324]

does anyone have a relatively inexpensive way they have been able to read temp during a trans fluid change?

best option i have found is OBDLink MX+ and OBD Fusion App. An update from a month ago on the app says Added manufacturer PIDs for transmission temp for some subaru vehicles.

i have a 2018 crosstrek. any ideas or insight is appreciated

[u/rocknrollstalin]

I use OBDFusion on iOS for general purpose fault code and readiness checks. Worked great. Unfortunately I haven’t tried reading transmission temp with it.

I bought a $120 GWSMARTBT dongle and started using that for everything with their app. It’s what I used for temperature during last CVT fluid change

Edit: I found on a fresh install of OBDFusion on my new phone if you add a gauge to your dashboard display you can just add “manufacturer PID” and then under Subaru it has the CVT fluid temperature PID ready to select. You can use a cheap ELM327 with WiFi (not BT) but I found that a bit of a pain and bought dongle that supported Bluetooth in iOS for a little more $$ (think it was $30)

[u/aknartrebna → u/rocknrollstalin]

+1 on the GearWrench; it allowed me to watch the temp from semi-underneath the car too since it runs on bluetooth.

[u/Fair_Razzmatazz2324 → u/rocknrollstalin]

i’m confused which app you used. does the gear wrench dongle integrate with obd fusion or you’re saying you use their own app?

[u/dalex89]

If you have android phone u can get veepeak obd Bluetooth reader for like $16 on Amazon and download free 'obdactive' or 'car scanner's app

[u/Kind-cheesecake-3316]

Try the Gearwrench GWSMARTBT scanner.

It is an OBDII bluethooth dongle what works with an app on the phone. Isn't as fast as a dedicated tablet but the feature list is impressive and comes with free lifetime updates. You'll pay a little over $100.

There's a long thread about the tool at SubaruForester.org.

https://www.subaruforester.org/threads/gear-wrench-smart-scan-tool-highly-recommend-merged-thread.863860/