Information and Entertainment System - System Operation and Component Description: Chimes

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Various vehicle systems send chime requests over the CAN to the IPC. The following are determined as the IPC processes these requests:

Chime characteristics (tone, tone length, number of repetitions, time between tones, etc.)
Chime output volume
Priority of the chime request
Which speakers will play the specific chime

The IPC sends the processed requests over the CAN to the ACM. The ACM outputs the left and right analog chime tones to the appropriate audio system speakers as fluctuating AC voltage.

For additional information on chimes, Refer to: Warning Chimes - System Operation and Component Description .