Two beeps?
My '22 GLE450, ramdomly, does this. Sometimes it does it as soon as I enter vehicle, other times, it will repeat several times during a 40 minute ride. It makes no sense. I know other GLE owners who experience the same issue. It is nothing that can be replicated at the dealership, since it happens so ramdomly. It is a different sound than any of the saftety warning sounds.
And we do occasionally get the red triangle dashboard icon about collision warnings (I think our sensors seem to be far too sensitive), but these two beeps occur with no other signal. Oh, well, not critical....
MIght not apply in your (OP) case, but in my MBUX it always seems to be weather alerts or alert system test messages. I access them from the radio screen and then delete them when they come in . Always 2 beeps. Took me a while to figure it out.









