O/D light flushing

If the overdrive light comes on and stays on, you have nothing to worry about. All it means is that the overdrive in your car is off. Overdrive is simply a mechanism that allows your car to maintain a steady speed while you are driving, and reduces engine speed by shifting your car into a gear ratio that is higher than the drive gear.

Overdrive improves fuel economy, and makes for less wear and tear on the vehicle when you are driving at highway speeds. Having the overdrive off is fine if you are driving in hilly areas, but if you are on the highway, it is best to have it on because you will get better gas mileage.

To get the overdrive light to turn off, and use your top gear, you should be able to locate a button on the side of your gearshift that will allow you to change the setting.

If your overdrive light is flashing or blinking, you are not going to be able to correct the issue by pushing a button. It means that something is wrong with your car’s transmission – perhaps the range or speed sensors, or the solenoid.