![]() Once all the cells are dead, the battery is considered dead and your entire vehicle won’t be able to function. If any of the cells in your car battery are dead, then your ECU is going to fail soon afterward. Read also: Car Immobilizer: Basic Function and Bad Symptoms 1) Dead BatteryĬar batteries have electronic cells which need to function in order for the ECU to function. ![]() Investigate them as soon as you notice problems with the ECU. There are lots of internal causes which could contribute toward this. However, what you may wonder about is why the ECU malfunctioned in the first place. It wouldn’t take you long to realize the ECU was responsible. If you were to ever have a bad ECU, then many noticeable symptoms would present themselves. The ECU regulates virtually every important system and function in your vehicle.
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