Forward Collision Warning Chime

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

The forward collision warning chime warns that a forward collision potential has been detected or the CCM and/or IPMA (with pre-collision assist) detects a forward collision warning system concern. Once the forward collision system detects a possible forward collision, the CCM (without pre-collision assist) or IPMA (with pre-collision assist) sends the HUD module the heads up flash rate message to flash the forward collision warning and the forward collision warning message request through the GWM to sound a 0.25-second chime tone 12 times to the IPC.

The forward collision warning system and chime can be disabled or turned off using the message center. When MyKey® is in use, the driver cannot configure the forward collision warning system or chime off. When the driver disables the forward collision warning chime, the CCM (without pre-collision assist) or IPMA (with pre-collision assist) sends the IPC the forward collision chime request through the GWM to sound a 0.25-second chime tone 12 times at 50% volume. The forward collision warning chime and confirmation chime are both sounded through the front speakers.

The IPC receives the forward collision warning message request and the forward collision chime request from the GWM over the HS-CAN3.

The GWM receives the forward collision warning message request and the forward collision chime request from the CCM over the HS-CAN2 on vehicles without pre-collision assist. The GWM receives the forward collision warning message request and the forward collision chime request from the IPMA over the HS-CAN2 on vehicles with pre-collision assist.

When a chime request is received, the IPC sends the IPC chime request message to the ACM and the audio DSP to sound the chime.