Why does the center console screen not light up after replacing the car battery?

[StJasper]

The center console screen not lighting up after replacing the car battery is caused by reversing the positive and negative terminals of the battery. Simply reconnect the positive and negative terminals correctly. Precautions for battery replacement are as follows: 1. Removing the battery: When removing the old battery, always follow the sequence of "remove the negative terminal first, then the positive terminal." Since the car body is connected to the negative terminal of the battery (ground terminal), if the positive terminal is removed first, the screwdriver may touch the car body during the removal process. Once touched, it is equivalent to directly connecting the positive and negative terminals of the battery, which may cause a short circuit and burn out the battery. 2. Installing the battery: When installing a new battery, simply follow the opposite steps. However, it is important to note that when connecting the positive and negative terminals, follow the sequence of "positive terminal first, then negative terminal," which is the opposite of the removal sequence. The principle is the same: to prevent the risk of short circuits and ensure safety.