I just changed my outside ambient temperature sensor for one I picked up in a scrap yard ($20.00 Cdn), and it made no difference, The display was still indicating 10C Lower than actual ambiant. I went back to the scrap yard and bought a used LCD display for 50.00 Cdn. Changed my old, partially black display, and now everything works fine.

Moral of the story is that although unlikely, the display itself could be inaccurate, causing an erroneous readout. So if changing the sensor does not help, than its the display.

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]