I wish I could figure out a way to get rid of that obnoxious aftermarket TPMS button but no joy I fear. It would be nice if I could figure out how I could configure the TPMS button in the factory panel to "ignite" the aftermarket brain
The front tires do turning and are also closest to the engine so I would expect that to drive a slight difference and sunlight as well can play a part.
In that picture, my torpedo heater in the garage aims down in the direction of the DS rear tire so it was a little warmer.
The aftermarket button does NOT light up if there is something out of parameters that I set, the display is activated and then the issue is highlighted there.
I took off one of the sensors to adjust the pressures when I got back to warmer Texas air and the unit began alarming immediately for that tire.
I do not have factory TPMS on my E53 but do have it on my E46 and the factory unit is a PITA when batteries go dead in the wheel sensors and changing tires over, etc. So I wish I could disable it in the E46 and stop the annoying yellow tire. I have an 3 year old Eonon Win CE unit in my E46 and down the road I will go with another one of these units with external sensors.
They work nicely for me.
PS: I found the setting for keeping music on in Driving Settings. You have a choice of volume reduction levels (from -10, -9 and all the way down to NONE, meaning no volume reduction), whatever those choices mean (maybe db?
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Mike