Battery Monitoring System (BMS) Low Battery Warning And Energy Management Messages

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

The BMS continuously monitors the condition of the battery. If excessive battery discharge occurs, the system will begin to shut down non-essential electrical systems in order to protect the battery.

The BMS displays warning messages to inform the driver that the battery is either at a low level of charge or the engine-off power consumption limit has been exceeded. There are 3 messages that can be displayed; two on the Touch Screen (TS) and one on the IC message center.

Low Battery - Please switch engine on or system will shutdown in 3 minutes

This message will be displayed as a warning on the TS if the engine is not running. This indicates that the battery charge has fallen below a predefined threshold. As soon as the battery is charged above this threshold, the message will be removed.

Low Battery - Please start your engine

This message will be displayed on the IC message center if the engine is not running. This indicates that the battery charge has fallen below a predefined threshold. As soon as the battery is charged above this threshold, the message will be removed or it can be manually removed by pressing the 'OK' switch on the steering wheel switchpack.

System will shut down in 3 minutes

This message will be displayed as an energy management message on the TS if the engine is not running, and system features are causing excessive battery discharge. After 3 minutes the BCM/GWM assembly will begin shutting down vehicle systems. Normal system operation will resume when the engine is started.

These messages are based on a percentage of the battery capacity available for the customer to use the vehicle systems with the engine off. The percentage can change based upon several factors. Once activated, the resetting of these messages will not occur until the vehicle is driven for 10 minutes with the engine running (to allow the battery to replace any lost charge). However, if the engine is run for less than 10 minutes, the messages will only be displayed after an additional 5 minutes with the ignition is switched on but the engine is not running.