There are many different indicators and lights on your car’s dashboard, indicating a variety of things. One that may puzzle you is a light that says “o/d off.” Depending on your car’s year, make, and model, this could mean several things. This article will help you understand what this indicator means and how it works, as well as give tips for when to use it and when not to.
Overdrive is a function found in automatic transmission cars that allows you to drive at the desired speed with a lower RPM than would be possible with the normal gear ratios. It reduces engine wear and noise while increasing fuel efficiency. It can also prolong the life of certain engine and drivetrain components. However, if you regularly operate your vehicle at lower speeds with overdrive engaged, it can cause excessive stress on your engine.
You should only turn off overdrive when towing a trailer, climbing steep grades at highway speeds, or hauling heavy cargo. Leaving it on in these circumstances can cause the transmission to overwork itself and burn out internal parts such as the OD switch, solenoid, or clutches.
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