Low State of Charge Warnings
The State of Charge (SOC) bar graph has three color variations depending on the SOC.
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Flashing grey/blue: The vehicle is plugged in and charging. A blue plug appears in place of the white stacked batteries.
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White: The high-voltage batteries have a normal SOC. The white stacked batteries telltale is present.
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Amber: A warning has been given about the high-voltage batteries SOC. The stacked batteries telltale displays in amber as shown in Fig. .
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Flashing amber: A second warning has been given about the high-voltage batteries SOC.
Fig. 1, High-Voltage Battery SOC Low Telltale
The first notice about the high-voltage batteries SOC occurs when it drops to approximately 15 percent.
If the vehicle is already in range mode, a low battery notice appears.
If the vehicle is in the economy or performance driving mode, dropping to a 15 percent SOC triggers a low battery and activation of range mode notice as shown in Fig. .
Fig. 2, Low High-Voltage Batteries SOC, Range Mode Activated Notice
These notices can be dismissed by pressing the back button on the steering wheel.
If necessary, the driver may shift out of range driving mode.
The second notice is a warning, shown in Fig. , and happens when the high-voltage batteries reach a SOC of approximately 5 percent.
Fig. 3, Second Warning of Low SOC
At this point, the estimated range ceases being calculated and displays as 0 miles or 0 kilometers and the SOC bar graph flashes amber. If not active, range mode is activated; it is not possible to shift out of range mode. The maximum power line and caret on the power gauge displays in amber with the power limit defined by the amber caret steadily decreasing as vehicle performance is derated.
The driver should immediately bring the vehicle to a safe stop, apply the park brake, and turn off the ignition before the third warning, shown in Fig. , appears on the driver display screen.
Fig. 4, Third Warning, Low SOC
At this point the amber caret on the power gauge is at 0 percent and driving is not allowed.
Have the vehicle towed to a charging station. Towing instructions are contained in Chapter 19; see Shutting Down the High-Voltage System.