A car has many different indicator lights and sometimes they could indicate a problem that requires immediate attention. One such light is the “OD OFF” signal, which means that your automatic transmission is forbidding itself to use overdrive. But what does this mean? The OD/OFF button is usually located on the gear shifter.
The overdrive function helps you cruise at your normal cruising speed, which reduces the engine RPM and makes the car quieter and smoother to drive. It also saves fuel and lessens engine wear. It’s a good feature to have in your auto transmission car, but it needs to be used wisely. Using the overdrive gear correctly prolongs the life of your car’s engine and transmission.
However, it’s important to keep in mind that if you use OD too much, your car will eventually start showing signs of mechanical problems. For instance, the OD mode is not effective when driving downhill or in traffic. It’s also not ideal for traveling on rough roads because it keeps the RPM higher than necessary.
Moreover, if you are towing a trailer or driving over hilly terrain, the overdrive feature is not effective at all. Therefore, it’s best to turn off the OD function in these situations.