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Discussion Starter #1 (Edited)
Turning the right side rotary knob - only will flip between two selections - keep turning it back and forth, eventually (sometimes) it will scroll to a 3rd selection. So obviously, I thought contacts were dirty. (ie, Onboard Computer and GPS Navigation, but would not continue on down and select Settings, Monitor Off, etc)

Complete disassembly of my nav unit produced this "pot" that controls the menu selections.

Popped it open, cleaned it the best I could, appears to be a rotary encoder. My attempt to clean it did not resolve my issue - it continues to scroll to only two items at a time.

Any ideas? Is that in fact my issue, and where might I find a replacement?

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