Unit Settings

[gabep]

Mine was at 09 and I changed to 01 for 24h but that was already in the settings so not really sure what has changed.

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Thanks for posting, that's very interesting! I'm guessing your car is Canadian spec and you have "Metric" selected? I'd assumed that the three modes in the IHU corresponded to these values for 161:

Metric = 01 Temp: °C, Clock: 24 h, Distance: km, Fuel Consumption: Liter/km
Imperial = 04 Temp: °C, Clock: 24 h, Distance: km, Fuel Consumption: Miles Per Gallon (UK)
US = 1F Temp: °F, Clock: 12 h, Distance: Miles, Fuel Consumption: Miles Per Gallon (US)

After trying to get 07 to stick for a while, I'd given up and accepted that 161 did nothing and the units were fully controlled by the IHU, but the fact you have 09 as default means at least some of them must do something. I may have to do some more testing and see if I can figure out the logic...