How to Deal with Abnormal Car Voltage?
2 Answers
Listen carefully for a "hissing" sound from the engine. If present, it indicates the vehicle battery is dead, and you should charge the car battery promptly. Test both the car battery and alternator to see if they are functioning properly. If either the car battery or alternator is found to be damaged, replace them immediately. If the car displays a low battery voltage but can start normally, the issue is minor, and the owner can disregard it.
As a veteran driver with over a decade of experience, I once encountered a situation where the voltmeter was fluctuating erratically and the headlights were flickering. I immediately pulled over to check the battery terminals, but cleaning the corrosion didn't help. Later, at the repair shop, tests revealed that the alternator voltage regulator had failed, causing excessive output that damaged some wiring. I usually carry a multimeter with me, and when I measured the voltage exceeding 14V, I knew the issue was with the charging system. My advice for similar situations: don't push your luck—first, check the battery voltage; normal range is 12-14V, and if it's outside this range, don't drive. Before replacing parts, ensure safety to prevent electric shock. Voltage abnormalities can easily lead to breakdowns or lights going out, so developing a habit of regularly checking the battery can save you a lot of trouble.
