Mercedes-Benz
Severe Overheating / Component Failure
Wallbox emits a burning smell or visible smoke during or after charging.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Shorted component on control board, Loose high-current connection causing arcing, Internal wiring insulation failure, Catastrophic failure of surge module or contactor
How to Fix / Troubleshooting
Emergency safety warning: Immediately switch off the wallbox at the breaker. If fire is present, use an appropriate electrical fire extinguisher and call emergency services.
- Do not reuse: Do not attempt to power the wallbox back on until it has been inspected by a qualified technician.
- Ventilate area: Open windows or doors to clear smoke, avoiding inhalation.
- Internal inspection (technician): A professional should open the unit, identify the failed component, and assess the extent of damage.
- Replace damaged assemblies: Replace any burned wiring, contactors, surge modules, or control boards. In severe cases, replace the entire wallbox.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Power Contactor / Control Board / Surge Module
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements