A car's engine control module (ECM) receives information from the many sensors in the car and regulates how the car works. The ECM also reduces the car's emission. When the car is malfunctioning, people sometimes spend a lot of money repairing a part that is not broken. The reason for this is that the ECM is receiving a bad reading, causing the part to malfunction. ECMs can be reset to correct most problems with the ECM.
Open the vehicle's hood.
Locate the car's battery.
Unscrew the wires connected to the negative terminal of the battery using an adjustable wrench. Wait three minutes.
Reattach the wires and close the hood. This will reset the ECM.
