Wondering what the 'O/D Off' light means in your car? Learn what Overdrive is, why the light comes on, and when to use it.

If you happen to have a vehicle with a manual transmission that's shifting hard, it's not something that should be ignored.

it could also be a mechanical problem with the engine or even an issue with the transmission. In most cases, it isn’t a serious problem if the light is on steady, though it still needs to be ...