On a 2nd gen Rivian R1T, Driver+ will show “unavailable” if it’s not on a clearly mapped divided highway or if lane markings aren’t detected well. Make sure cameras and sensors are clean (especially the windshield area), you’re above the minimum speed, seatbelt is on, and there are no dash warnings. If it still won’t engage, check for software updates or try a reset, otherwise it may need calibration through service.I have a R1T 2nd gen (2025):
I cannot get driver assist to engage- even on an interstate divided highway when I double pull right arm itsays unavailable