High-Voltage Battery Warnings

There are a number of high-voltage battery cautions and warnings.

The high-voltage battery problem telltale shown in Fig. , appears in the dynamic telltale portion of the driver display screen when a non-critical high-voltage battery fault has been detected. A minor issue that takes one of the nine high-voltage batteries offline is an example of a non-critical high-voltage battery fault. This telltale is a signal to take the vehicle in for service.

Fig. 1, High-Voltage Battery Problem Telltale

An amber caution window is also a signal to take the vehicle in for service.

An amber caution that states the driving range has been reduced shown in Fig. , or that a program derate has been activated, is a signal that the vehicle should be serviced soon.

Fig. 2, High Voltage Battery Caution

A red warning about a high-voltage battery situation shown in Fig. , should prompt moving the vehicle off the road to a safe location, turning the keyswitch to the off position, and a call for service.

Fig. 3, High Voltage Battery Warning

If a combustible gas detection system LED has illuminated or a high-voltage battery thermal event warning has appeared, exit the cab and call emergency services. For more information, see Shutting Down the High-Voltage System, in Chapter 19.