I got it to work, but the first thing I wanted to look at...I think opened a big can of worms
https://www.ramforum.com/threads/2018-sport-tow-package-driver-mirror-issue.211045/
One thing to remember. Always do back up before you touch anything.
Not sure what you did to "trouble shoot"
In other post, you should add that. Cause no one will be able to help just based on that.
You can use AlphODB to check for codes, but it's not going to fix broken stuff.
1. Switch is bad
2. Cable(s) are bad
3. Mirror is bad.
4. Maybe module issue, but I doubt it.
I'd check the cables, make sure none are short, or lose. Could always check fuse but since other side works, doubtful.
Many people will tell you, including myself, don't just throw parts at things. But in this case. I'd just order new switch and matching mirror. I'd check wires first though.
Could buy them from Site vendor here on forums, Benny gives good prices and very helpful. Or get them some local dealer.
If you have equipment and knowledge, you could try trouble shooting it first.
