Parking Aid Audible Alert

The speaker increases its warning tone rate as the vehicle gets closer to an obstacle. When an object is detected within 304.8 mm (12 in) of the sensors, the warning tone becomes continuous.

When the PAM sounds the parking aid tone, it sends an audio volume cutback message to the IPC which sends a message over the to the ACM. When the ACM receives the message, it reduces the speaker output so the parking aid tone can be heard.