2014 Tundra Sonar issues

All of a sudden all 5 sensors are blinking stating check sonar system see dealer. But before I drive 4 hours to a dealer just trying to trouble shoot my self. My battery is weak so will change that tomorrow and give it a good wash. Had slushy conditions then went to well below freezing. Could it be something as simple as these things to fix?? Haven’t been in an accident or hit any hard bumps.

 

Welcome from NY.

Could be the sensors have road grime/dirt on them.

 

I have a 2016. Did the same thing with 1 sensor disconnected at the harness. Clean the sensor surfaces. Do the battery as planned. And check the connections (unlikely) also, you can turn the BSM and Parking sensors with a switch on the panel. See if this isolates the issue.