Exclamation point and beeping when putting car in reverse

[BigEdgar]

Hi,

This morning I put the car in reverse and got a display on the dash that showed the birds-eye view of the car with an exclamation point in front of it, accompanied by a short series of beeps. The car operated just fine and I was able to drive into work. This only happens in reverse.

The display was the one that shows up on the dash when your parking proximity sensors are going off - it showed the picture of the car, as done with the proximity sensors, but instead of showing a side where the sensor detected a close object as is done with the proximity sensors, it just showed the car with an exclamation point in the front of the car (should have taken a picture, will do so later if needed). This was not the TPMS warning (I've had that before, this is definitely different). Again, this only happens when I put the car in reverse. I turned the car off and started it again, and that did not clear the warning.

I'm wondering if maybe there's an issue with one of the sensors. I looked through the manual but didn't see this warning shown in the manual anywhere.

Has anyone seen this before?

 

[SoulEV2016]

Simply DUST on radar detector.

Very common for me ... the last alert of this is a drop of frozen water on 1 detector (this disable all detectors).
It's happened only once.

Surprisly, I have frosty damp fog on this day and this is not a problem for radars when they are frozen (to detect correctly the distance).

 

[wrickcook]

Maybe this...
It happened to me a few weeks back, never saw it again.

 

[BigEdgar]

Yep, that picture looks just like what I saw, only the exclamation mark was positioned on the front of the car. Ice or dust on the sensors makes sense. We had our first blast of icy / snowy weather here this morning, so I'm guessing it was ice. I'll clear the sensors when I get back to the car later today.

Thanks very much for the replies - sets my mind at ease!