from another thread:
Quote:
Originally Posted by andrewwynn
I use a basic WiFi obd and phone app or the new think diag OBD Bluetooth to pull up realtime values.
If you have high cluster apparently there's a way to program OBC to show engine temp in cluster.
You can temperately show engine temp on the cluster using the hidden menu.
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Apparently, I have ambient temperature and mileage pre-set on my "high"? cluster. I've pressed the B/C "board computer" a few times, but didn't see anything except "instant mileage" or something like that. I reset the trip button this morning, while still pressing the B/C stalk, and momentarily saw other messages flash on the display, but wasn't looking straight at it. I think I saw avg. mileage, instant mileage, and then back to ambient temp.
Searching for info about getting a more accurate temperature reading, I found two sources for getting the message I want, by pressing the trip reset and B/C stalk (which I had accidentally discovered). One source led to an E46 forum
https://www.e46fanatics.com/threads/...n-menu.239619/, and the other was
https://www.youcanic.com/guide/access-bmw-hidden-menu.
I'm guessing that if I follow the procedures shown, I can access coolant temperature through it (it's listed on the procedure). This must be old hat to you guys, but I'm a rank amateur.