After washing my '18 E63 S, it seems like I've irritated the Outside Air Temp sensor into reading incorrectly and I should replace it. I have a rough idea as to where the sensor is, but would love some actual intel as to where it is on AMG models, as the only guidance I can find is for regular W213 sedans.

Thanks all!

 

Have you waited long enough? Getting it wet causes it to misread for several hours, more if the car is not driven.

 

It's been 6 days now, was reading pretty good for a few days but upon getting in the car this afternoon, it's off by about 10 degrees F.