The ACC on our 2016 Outlander is always going "offline" when we use the cruise control. After 15 minutes we get an error "ACC unavailable" which kills the cruise control and then after 5 minutes comes on again for another 15 to 20 minutes. Anyone else having this intermittent issue? We also get this error caused from the FCM going bye bye.

 

What is your Year Make Model engine size? Have you checked
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2016 still under warranty take it to your local Mitsubishi dealership, they should fix it free of charge.

 

I notice on mine, different weather conditions will cause it to disable. I think it's mentioned in the manual.

 

It doesn't work in snow or rain but goes "offline" when weather is sunny 23C on dry highway. Perfect conditions, checked unit and nothing was stuck to it and it was perfectly clean.