Toyota 4Runner Voltage Regulators

The vehicle’s alternator can produce much higher voltage than a battery could bear. If left uncontrolled, this voltage output can damage the whole electrical system, and the vehicle’s lights can burn out. Therefore, the electrical system in modern cars, trucks, and SUVs utilizes such component as a voltage regulator to control voltage output generated by the alternator. In fact, it keeps the voltage within acceptable limits, which remain constant regardless of changing conditions. Depending on the situation, a voltage regulator can also force an alternator to generate more output. When we turn on any accessory, it draws more power from the electrical system. Correspondingly, the voltage drops and the voltage regulator makes the alternator produce extra power.

Occasionally, Toyota 4Runner owners report issues with starting their vehicles. In most cases, however, the problem lies in the starting system. But there are also situations when the alternator, battery, or voltage regulator is the culprit. You’d better test the output voltage, and if it stays between 13.5 and 15.0 Volts, then the regulator is fine, but if not, then you should probably think about a replacement. Our store can provide you with a huge selection of Toyota 4Runner voltage regulators. If you have any questions, feel free to contact our help center for professional advice.