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What’s this part?

RB18C

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Anyone know what this large black box in behind my rearview mirror? 2020 3500 tradesman.
 

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I have a feeling it’s for some of the safety group features. Like adaptive cruise control and lane assist. But I’m not sure.
 
It has your radar for adaptive cruise control, forward collision warning, automatic windshield wipers, etc. Part of the safety group.

Sent from my SM-G975U using Tapatalk
 
It has your radar for adaptive cruise control, forward collision warning, automatic windshield wipers, etc. Part of the safety group.

Sent from my SM-G975U using Tapatalk
Thx man that’s what I was thinking.
 
Or anything that might be in an intersection. This truck has more blind spots than any truck I've ever owned. The huge A pillars, the crap in front of the mirror, giant head rests front & back.......
And it's STILL my favorite truck of them all!!:p:p:p
 
All the small cars, suvs/ cuvs and crap have to learn to stay back! If they can see us and we can’t see them and then there is a ’’bump’’ who’s falt is it really? ;) Survival of the fittest!!!
 
All the small cars, suvs/ cuvs and crap have to learn to stay back! If they can see us and we can’t see them and then there is a ’’bump’’ who’s falt is it really? ;) Survival of the fittest!!!

Ha! We called that the "Law of Gross Tonnage" when I was driving Navy ships and subs.
 
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