2008 Kenworth T660

2008 Kenworth T660 only the warning lights comes on no alarm sound at all, I mean no matter what the issue is, coolant level/stop engine/ low air/5th wheel slide/ low oil pressure/ diff lock /open doors/no seatbelt, you name it.

All the warning lights works fine and come on if there is an issue it is just that there is no alarm sound or buzzing.

could someone please be kind to point me to where the warning buzzer located on 2008 Kenworth T660 so i can look at if something disconnected from it?

… thank you in advance any help would be appreciated.