I installed a scangauge in our 2014 4runner and am getting transmission temperatures as an extended gauge, using the 2010+ codes from
https://www.scangauge.com/support/x-...yota-specific/
fudge_brownie, there are reports of 2003 v6 4runners getting transmission temperatures from a scangauge at
Scangauge trans temp? - Toyota 4Runner Forum - Largest 4Runner Forum. Different years require different extended gauge codes. Not sure if this also works for v8's.
A bluetooth obd dongle is another great way to go, paired with the android torque app. I didn't do this because I wanted a permanent mount and didn't want to leave even an old android phone visible. The scangauge is a 1990's interface, so hopefully not as attractive to thieves.
I installed our scangauge over the rearview mirror with a blendmount. I had reservations about opening up an A-pillar with side curtain airbags to run the cat5 cable, but it was surprisingly easy, at least for our 2014 4runner. I posted a how-to on
2014 driver-side A-pillar trim removal - Toyota 4Runner Forum - Largest 4Runner Forum.
Bill R
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