I recently purchased my second 300. The rear parksense alarm on my 2008 beeps one time when the first yellow led lights up. After that it doesn't beep until the red onelights up. My 2005 didn't beep until the red led lit up. I think that there is something wrong with my new one. Can anyone check theirs and see when the audible alarm goes off? Preferably someone with a 2008. The dealer told me that this was normal but I think he's full of it.