Why can't electric vehicles be driven on rainy days?

[EmilianoLee]

Electric vehicles cannot be driven on rainy days for the following specific reasons: Plug short circuit: The controller's power-off plug gets wet and short-circuits, mainly because these plugs accumulate dust during normal driving. When soaked in water, this dust can cause a short circuit, preventing the vehicle from moving. If there is no dust, simply getting a bit wet usually doesn't cause these issues. Controller speed limit: The controller's speed limit plug gets wet and short-circuits. Additionally, some vehicles may accelerate uncontrollably on rainy days—once the throttle is engaged, the vehicle runs without control. This is usually due to the controller's throttle plug getting wet and short-circuiting. The solution to these problems is simple: wait for a sunny day when the plugs dry out, then cover them with plastic bags to prevent water ingress.

[OMalachi]

When an electric vehicle fails to start in rainy weather, it may be due to the self-protection mechanism of the high-voltage system being triggered. If rainwater seeps into the battery compartment or control unit, the system detects excessive humidity risks and will automatically shut off the power to prevent short circuits or electric shock accidents. This is not a major issue but part of the safety design. I recommend regularly checking whether the sealing strips of the battery compartment are aged or cracked, and ensuring that the drainage holes are not blocked. When parking in the rain, choose a higher ground position to avoid water accumulation. Modern electric vehicles have IP67-level waterproofing, but aged components should still be replaced promptly. If this occurs frequently, it's best to visit a professional shop to test the dryness of the circuits with equipment, ensuring long-term safety. Do not force a start to avoid damaging the components.

[LeviMarie]

I once encountered a situation where my electric car just wouldn't start in the rain, which really stressed me out. After checking, I found out that the car door wasn't properly closed, allowing rainwater to seep into the electronic control board. The system automatically shut down thinking there was a danger. Many people overlook this—damaged seals or debris blocking drainage outlets can cause similar issues. Before rainy days, remember to carefully check if the body joints and battery covers are properly sealed. When washing the car, avoid directing high-pressure water at sensitive areas. Simple maintenance can prevent big troubles. If all else fails, wait for the weather to clear and dry before trying to start it again—no need to rush for repairs. Electric car owners really need to be careful. Paying attention to these details ensures smooth travel during rainy days and saves a lot of hassle in the future.

[OCatherine]

The common reason why electric vehicles cannot operate in rainy weather is the activation of the safety protection system. High-voltage circuits may leak in humid environments, prompting the vehicle to automatically prohibit startup to prevent personal or equipment damage. This is a design consideration, not a defect. When this occurs, first check for obvious water traces externally and wait patiently for drying before operation. Preventing more serious accidents such as short circuits and fires is the top priority. I also recommend minimizing the use of outdoor charging stations during rainy days and opting for covered parking spaces. Regular waterproof testing can prevent issues, as safety always comes first.