Controlling high voltage devices

A system for controlling high voltage devices. The system includes a battery, a DC-DC converter, and an electronic processor. The electronic processor is configured to, in response to determining a partial startup condition is met, operate the system in a partial system mode and perform a full shutdown of the system in response to a failure requiring a full shutdown. The electronic processor is configured to, in response to determining a full startup condition is met, operate the system in a full system mode and, in response to a failure occurring, determine whether the full shutdown or a partial shutdown is required. The electronic processor is configured to perform the full shutdown of the system in response to determining the full shutdown is required, and, in response to determining the partial shutdown is required, perform the partial shutdown and operate the system in the partial system mode.