What to Do When Jump-Starting the Battery Fails?

[McSimon]

You can use jumper cables to start the car. Here are some relevant solutions for when the car battery is dead and cannot start the vehicle: 1. Jump-starting with jumper cables: Jump-starting the car with jumper cables is a very effective method, provided you encounter another normally running vehicle on the road and have the necessary tools. First, open the hoods of both cars, connect the positive and negative terminals of the two batteries using the jumper cables, then start the functioning car and rev the engine slightly. Next, try starting the car with the dead battery, and it should start quickly. 2. Push-starting: Push-starting is suitable when there is enough manpower and the car is a manual transmission. Before pushing, turn on the ignition, reach a certain speed, then shift into gear, release the clutch pedal, and press the accelerator. Once the engine starts, quickly press the clutch again and give it some gas to prevent stalling. Push-starting is a skill that might be difficult for novice drivers to master. Towing-starting follows the same principle, except instead of people pushing from behind, another car pulls from the front.

[DiTeagan]

I encountered this situation last winter when helping a friend jump-start the car, but it still wouldn't start. At that moment, I had a quick wit and rechecked the connections: making sure the red clamp was connected to the positive terminal of the rescue car and the black clamp to the negative terminal of the car being rescued, ensuring not to reverse them. Then, I tested whether the rescue car's battery had sufficient charge, only to find it was also a bit aged. As a last resort, I turned off power-consuming devices like the headlights, let the battery charge for a few minutes, and tried starting again, but it still didn't work. At that point, I began suspecting a fault with the rescued car's starter motor, as there was only a faint sound when turning the key. For safety, I didn't continue tinkering and simply called roadside assistance. That experience taught me to always test the rescue car's battery condition before jump-starting and to use genuine clamps to avoid short-circuit risks. It's also important to develop regular maintenance habits, such as checking the battery health every six months, which can save a lot of trouble.

[McLena]

As someone who frequently goes on self-driving trips, I fully understand the frustration of a dead battery that won't start. First, check if the connections are secure—the clamps should be tightly fastened to the battery terminals without any looseness. Next, inspect the battery itself: the rescue vehicle's battery voltage should not be below 12.6 volts, which can be easily measured with a multimeter. If it's insufficient, try another car for assistance. Third, consider issues with the rescued vehicle—it might be a blown fuse or a short circuit in the starting circuit. In this case, pop the hood and check the fuse box; often, it's the 10-amp fuse for the main starting circuit that's blown. Fourth, try letting the rescue vehicle idle for a few minutes to charge the battery before attempting to start the rescued car. If the starter motor reacts but the engine doesn't fire, it indicates a fuel supply or ignition system problem. Stay calm throughout the process, ensure proper ventilation to avoid gas explosions, and if all else fails, call a 4S shop. Pro tip: keeping a portable battery tester on hand can save you a lot of time and hassle.

[MacLucy]

I'm a new driver and just learned how to jump-start a battery not long ago. When I tried to jump-start my car with another vehicle but failed, I panicked. A friend taught me to first check if the clamps were correctly positioned—red to positive and black to negative, making sure not to mix them up. Then, I inspected the battery terminals of the dead car for oxidation or corrosion. If there was any, I used sandpaper to clean them thoroughly to ensure conductivity. I also tried turning the key on and off a few times to see if it would activate. Later, I realized that the engine RPM of the rescue car was too low, causing insufficient charging, so I stepped on the gas to increase the RPM and tried starting again. This experience taught me the importance of maintenance, such as pre-warming the battery in cold weather to reduce issues. If everything seems normal but the car still won't start, it's best to contact a repair shop directly instead of wasting effort and time.