Audible Chimes
WARNING: This page is about a different car, the 2014 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
When the front parking aid, rear parking aid, active park assist, and cross traffic alert systems are active, the IPC requests an audible chime tone network message. The IPC gateways the message from the corresponding module to the ACM , where an audible chime tone is generated, and the output level set. The audible chime tone signal is sent to the appropriate audio system speaker(s).