PRNDL Indicator

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

The IPC uses the following messages to control the PRNDL:

Power shed level request
Transmission gear display
Transmission gear display mode
Transport mode
Vehicle speed

The IPC receives all the required messages from the GWM over the HS-CAN3.

The GWM receives the transmission gear display and transmission shift mode display messages from the PCM (gas engine) or TCM (diesel engine) and the vehicle speed message from the PCM over the HS-CAN1. The GWM receives the transport mode and power shed level request messages from the BCM over the HS-CAN1.

When the vehicle is in transport mode, the PRNDL is not displayed upon entry or exit from the vehicle to prevent battery drain during longer periods of time when the vehicle is not in use, such as those experienced during vehicle transport.

The IPC also uses a park position detect switch (part of the selector lever) input to signal the IPC the shift lever is fully seated in the PARK (P) position. The park detect input controls the display of the "P". The IPC compares the park position detect switch input with the transmission gear display message sent from the PCM.