What to do when the battery of a keyless start car runs out of power?

2 Answers
EvelynLee
07/24/25 10:09am
When the battery of a keyless start car runs out of power, you can only start the car after charging the battery with an external power source. Here are some introductions about car batteries: 1. Battery power loss phenomenon: If you cannot start the car normally, do not attempt to start it again, as this may damage the car battery. 2. Car batteries have a certain usage cycle: Under normal circumstances, after 2-3 years of use, the car battery will show signs of aging. The usage cycle of the car battery is directly related to the driver's usage habits and maintenance conditions. 3. Long-term non-use of the car: The battery power will gradually decrease, and it may be difficult to start the car again.
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DelaneyDella
08/11/25 5:21am
If the battery is dead, the push-button start will definitely not respond. As an experienced driver with decades of driving experience, I’ve encountered this issue often. When a push-button start car has no power, don’t rush to press the button—it’s useless. First, check if the battery is truly dead: no dashboard lights or horn sound is evidence. Push-button start cars usually have an emergency start method, such as finding a keyhole under the steering column or inside the center console to turn with a spare key. If that doesn’t work, jump-starting is the most effective solution: park another car nearby, connect the jumper cables positive to positive and negative to the car body or battery negative—don’t reverse them or it will cause a short circuit. After starting, let the engine run for 20 minutes to recharge. In winter, batteries are prone to failure, so regular testing or replacing the battery is preventive, and a portable jump starter is also practical—keep one in the trunk for emergencies. Safety comes first when driving; don’t mess around in dangerous areas.
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