Battery Monitoring System Control Module Low Battery Warning And Energy Management Messages

The BMS control module continuously monitors the condition of the startup battery. When excessive startup battery discharge occurs, the system begins to shut down non-essential electrical systems in order to protect the startup battery.

The BMS control module displays warning messages to inform the driver:

• The startup battery is at a low level of charge.
• Power consumption limit has been exceeded in Power Mode 0 (ignition OFF).

'Energy Management' 

The message is displayed as a warning on the FCDIM  when in Power Mode 6 (ignition ON) or less. The message indicates that the startup battery State of Charge is less than a predefined threshold. The message displays until the startup battery State of Charge is greater than the predefined threshold. The Power Mode 7 (engine running) must be for a minimum of 10 minutes.

Low Battery - 'Please start engine' 

The message is displayed on the IPC  message center when in Power Mode 6 (ignition ON) or less. The message indicates that the startup battery State of Charge is less than a predefined threshold. As soon as the startup battery State of Charge is greater than this threshold, the message is removed. The message can be manually removed by pressing the 'Menu/OK' switch on the left Steering Wheel Switch (SWS).

The messages are based on a percentage of the startup battery capacity. The percentage can change based upon several factors. The messages reset after the vehicle is driven for 10 minutes in Power Mode 7 (engine running). The time allows the startup battery to replace any lost charge. However, when in Power Mode 7 (engine running) for less than 10 minutes, the messages are displayed after an additional 5 minutes.

The messages are available for the driver to use the vehicle systems within Power Mode 0 (ignition OFF). The messages only occur when in Power Mode 6 (ignition ON).