Service function guideRegenerative Brake Service Mode

This guide explains how hybrid and electric vehicle regenerative braking systems operate and why a dedicated service mode is required before any brake work begins. It walks a professional technician through preparation, the full step-by-step procedure for entering and exiting service mode, verification of the result, and the variations between vehicle architectures. It also covers common mistakes, troubleshooting when the mode fails to engage or disengage, and the aftercare steps that protect both the vehicle and the next driver. After reading, a technician will be able to safely place a wide range of hybrid and electric vehicles into regenerative brake service mode and confirm the system is ready for mechanical service.