Electrified-vehicle safety and diagnosis
High-voltage warning messages may involve 12-volt supply, charging equipment, thermal management, isolation monitoring or traction-system components. Diagnosis begins with the approved safety procedure and a qualified technician. High-voltage systems must not be probed or opened without proper isolation, PPE and training. Some routine mechanical services may be possible even when high-voltage repairs are outside a shop's scope.
Repair decisions and verification
Verify charging or operation only after approved safety and system checks; do not advertise unsupported high-voltage repairs.
An EQE, EQS, EQB or plug-in hybrid may show charging errors or electrical messages related to charging equipment, 12-volt supply, software or high-voltage systems.
How the problem should be evaluated
Record the exact warning and charging conditions. Distinguish external charging, low-voltage supply and high-voltage faults before selecting a repair.
Why the model and engine matter: High-voltage work requires appropriate training, equipment and safety procedures; call to confirm shop capabilities.
If you are experiencing this issue, contact Mich’s Foreign Cars in Hickory, NC at 828-324-6012. Provide the model, year, engine, warning text and when the symptoms occur so our service team can discuss an appropriate diagnostic visit.