Date registered: Feb 2008
Vehicle: 2004 W220 (S430) ; 2001 R129 (SL500) Sport
Location: Alabama Gulf Coast--formerly Charlottesville, VA
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Quoted: 1 Post(s)
I'm about 98% sure there is no such thing as a MB factory-installed or even dealer-installed radar detector. If you have one, it was added by the previous owner and it should be apparent as an add-on. I know there are some detectors that have remote sensors you can mount in the grille or below the rear bumper, so it may not be an obvious hang-by-the-power-cord-by-the-rear-view-mirror-kind like we are used to seeing. Even so, it's not going to be built into the dash or part of Comand unless someone spent a very large amount of money on the install. that start-up chirping sounds like an old Passport radar detector. Look under the lower edges of the dash around the driver's knees and see if there is an out-of-place electronic gizmo lurking out of sight. I don't know of any part of the normal noise the car might make that is a chirp like you describe. Sorry I can't be more help.
"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck