Join Date: Jul 2005
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Our Lag II ( 2004) displays - 0 as well, so does our 2006 Megane!
I have always put it down to the fact that the sensor and electronics are capable of calculating in smaller increments but the actual display only displays whole numbers.
If your display says - 0 I assume the temp is somewhere between 0 & -1, if it shows 0 the temp is somewhere between 0 & +1.
As it is only an indication & guide, rather than the actual temp I think the resolution is adequate.
Currently in SportTourer's garage:
2010 Laguna III SportTourer Initiale Tom Tom.