Rear Sensor blocked message

[CroR1]

As soon as it rains, light rain, will cause the message on my display saying rear sensor blocked. And what's annoying is that I don't even have a need to turn the wiper blades on. When I come outside to check the sensors, all 3 sensors on the bumper are dry. Has anyone else had a similar issue, any input, is my sensor going bad?

[glock-coma]

I've had that message come up a few times. It's always cleared after a restart.

[SHOdded]

If there's a connector back there, sometimes uplugging it, cleaning any pins and reconnecting (with electrical tape wrapped around the connector) will fix it.

[CroR1]

After a restart the light goes off but comes on again after 5-10min. Of driving.

Where is the wiring, under the bumper? I'll look into doing that as I don't have much spare time to mess with the dealership.

[SHOdded]

Don't have access to the FSMs anymore, but in the Edge, after removing the rear bumper cover, you can access the individual sensors that can be plugged/unplugged.  The parking aid/reverse sensing system module is behind the rear LH trim panel, might be in the trunk for the SHO.