ACC disabled out of nowhere

[fister blister]

Just had my first real "why is my car yelling at me" moment, during a drive off this morning and I got hit with an "ACC Disabled" message on the dash, I did a quick walk around to check the front radar and the camera area.....both clean as a whistle, its a 2021 Acadia SLT, and it's been rock solid up till now.

Appreciate any insight before I head to the dealer and they tell me "can't replicate the issue"

 

[fruit-required13]

I get what you mean when the dealer says they can't replicate the issue! I think you can try restarting the car and toggling the ACC on/off through the settings. If you've had a battery dip recently or windshield work, that could mess with sensor calibration too.

 

[powerdriveGMC761]

Yep, that's right! A quick restart or settings tweak can often fix small issues, especially if the battery was low or recent tasks messed with the sensors.

 

[Paperclicer]

It's a 2021 model, so I have to ask, is it the original battery? A weak battery can mess with the electronics. Also, the dealer may not be able to replicate the conditions, but they can at least scan it and see if there's some info that they can use.