If the fuse of an electric car is blown, can it not be charged?
3 Answers
If the fuse of an electric car is blown, it cannot be charged. There are five reasons why an electric car may not charge as follows: 1. Poor contact. If the circuit has poor contact, it will directly cause the electric vehicle to fail to charge. 2. The fuse is blown. The fuse here refers to the fuse inside the circuit breaker. If the fuse is blown, there will naturally be no power. 3. The battery has reached the end of its life. Most electric vehicle batteries have a lifespan of 3-5 years, and replacing the battery every 3 years is the best practice. 4. The circuit board is open. Once the circuit board in the dashboard is open, the current cannot fully enter, resulting in incomplete charging or failure to charge, which is a normal situation. 5. There is a problem with the battery's positive and negative terminals. Reversed battery terminals or poor contact of internal battery connectors will directly cause the charging failure.
I'm in the auto repair business, and it's totally normal for an electric car not to charge if its fuse is blown. The fuse is there to prevent overload—when it blows, it's like the circuit gets forcibly cut off. Even if you've got the charging cable plugged in, the current simply can't reach the battery pack. Common causes might include unstable voltage from the charging station, aging wiring causing a short, or the battery management system acting up. The most annoying part is that some cars hide their fuse boxes in really tricky spots, like behind the glove compartment in certain models. A word of advice: don’t just replace the fuse with a copper wire—I’ve seen people fry their charging units doing that. Better call a tow truck and head to the dealership to figure out the root cause of the blown fuse.
Last time my Model 3 had the same issue - plugged into the charger but got no response at all. The service center found it was a blown high-voltage fuse. The technician said it might have been caused by instantaneous voltage fluctuations during fast charging. They checked the battery pack voltage difference with a diagnostic tool, and luckily the battery cells weren't damaged. Nowadays EV charging systems are way more complex than smartphones - just the fuses alone include main fuses and charger fuses as multiple protection layers. If you're in a hurry, you could try switching to a slow charger, but most likely it still won't charge. I'd recommend scheduling maintenance directly - don't be like me wasting two hours waiting before realizing there was a problem.
