Question Park sensors

[eZAK61]

Message on DIC says "Check Rear Park Aid". wiped off sensors, same message.
While in "R" camera works but NO beeping for proximity.

Due for an oil change, so I told dealer to check back up system.

They said they " We checked it and there were no error codes"
When I picked it up, (service closed) I put it into reverse... Same ole same ole...
Called back today, they said to bring it in on Friday (Dumb A**'s)

So, Should I just buy 4 sensors ($70) or is it something more involved???

 

[YODA]

Check your owners manual. It may have been accidentally turned off. I believe there is a way to get to it through the dash settings. Could be wrong though. My 2022 is being built this week.

 

[Rays98GoVols]

my 2008 King Ranch has a button on the dash below and to the left of the radio.