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Outside temperature sensor

3K views 0 replies 1 participant last post by  drsmart1 
#1 ·
On the 2014 Ram 3500, it looks like the outside temperature sensor is in the driver's side trailer mirror. Ours started to show readings as low as -40C when it was +10C outside. I'll be taking it in to get fixed but I'm wondering if the diesel fuel or DEF tank heaters rely on this reading. Can't find any tech documents showing an outside temperature sensor for the DEF tank.
 
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