Went for a drive today, randomly half-way through got a message saying "ACC unavailable / Driving permitted, Service Necessary" and a message which said something like "WBB required" can't remember the exact letters. Anyone get this? It went away and ACC was working fine later. Just ticked over 1k miles today! I did drive through some dusty roads for a bit but nothing too crazy.

 

Yes, I've seen intermittent "ACC unavailable" or other such warning messages related to cameras, etc. I ignore them and they went away after the next restart. They happen rarely enough that I don't worry about them.

 

I've had them from time to time. Give your ACC eyeball a good physical cleaning on your next wash. Not just a spray of water. Have not have the message pop up in a while after I cleaned the senor with a brush that had a rich and foamy lather from the soap.