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Originally Posted by MarkF
Ray/Anyone,
Is there a transmission temp readout in the on board diagnostic array for a 2wd 4.7L 2003 Tundra SR5?
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I can't speak for the 2003, but there is for the 2004. I checked it with my scan tool and the ATF temperature can be read and is functional. On a recent trip to Home Depot it started out at ambient temperature (which exactly matched the console outside temperature) and rose to a high of 142 degrees.
I think the ultimate head unit would be one with a color LCD screen that allowed you to selectively display OBD-II parameters, in addition to GPS navigation and everything else.