Electric Mercedes-Benz vehicles are built on advanced high-voltage (HV) systems powering the drivetrain, battery, and critical functions. Diagnosing HV faults requires training, safety protocols, and dealer-grade tools. At AT Technicians, we specialise in electric system diagnostics for Mercedes EQ models and hybrid variants. We begin by isolating HV systems using secure procedures and check insulation resistance, voltage stability, and connector integrity. Our technicians perform diagnostics on HV inverters, charging systems, and DC-DC converters, identifying faults like thermal shutdowns, short circuits, or energy losses. We also test integration between HV systems and standard 12V architecture, ensuring no conflict with lighting, ignition, or ADAS modules. Our team updates relevant control units and resets fault codes after each intervention. Choose AT Technicians for safe, certified, and accurate diagnostics on electric Mercedes-Benz high-voltage systems.