Why does a battery failure in a Mercedes-Benz sedan cause the car to jerk?

Q: My Mercedes-Benz sedan has an acceleration jerk problem. According to the advice, I replaced a new original battery, and now the vehicle acceleration has returned to normal. No matter whether the car is cold or hot, slow or fast acceleration, it will no longer jerk. But I don’t understand why a battery failure causes the car to jerk?

A: The poor performance of the vehicle battery is mainly manifested in unstable power supply voltage and current. The battery is a large-capacity electrical appliance in the car circuit. If the power supply is unstable and the computer works poorly, it is like a person with hypoglycemia. He may not be able to stand steadily, so how can he walk steadily? The car control computer works disorderly, and sometimes it will generate various inexplicable fault codes, which make the repairman dizzy. Therefore, when repairing the car, attention should be paid to the detection of battery performance.