City driving or towing, off. Highway driving, on.
Answermost times you drive with od turned off if you are towing in extreme conditions and od is going in and out, also in extreme slippery conditions one might turn od off.AnswerOn a tractor-trailer you get better fuel mileage with your overdrive off--the truck is most efficient in "direct drive," where the engine is connected directly to the differentials. Every gear pair your power goes through costs you power due to heating.
NO, OD off is mainly for increased braking/control when towing.
The OD button means "Over Drive", off or on.
Od is over drive . Its only in auto trans. You take it off when you are pulling something.
"Over Drive Off"
You can leave the OD ON for general purpose driving and freeway travel. Use the OD OFF function for enhanced torque applications climbing hills or accelerating around tight turns) or seat of the pants driving experience.
If there is an OD off light on the dash, overdrive is turned off.
OD stands for Over Drive. There is a button the left side of the A/T shifter, pressit to get the over drive in. If over drive is off, the car will consume more gas staying in 3rd gear all the time.
Over drive all Kia rio's run on overdrive automatically button to turn off OD is on your gear shift
1. Idle 1.5 minutes 2. Drive, AC on, OD on, engine 1400-1600: 3 minutes 3. Drive 50-65mph, engine 1600-2000: 1.5 minutes End ERG test 4. Idle 10 minutes, ignition key off for 10 seconds 5. Drive 50-60mph, OD off, engine over 3000: 3 minutes 6. Drive 53-58mph, AC on, OD on, engine 1800-2100, cruise control ok: 3 minutes 7. OD off, release accelerator 5 seconds, idle 1 minute 8. AC off, 2nd gear, engine 3000, accelerate to 41, down to 34, up to 41, do not completely release accelerator: 2 minutes 9. Idle 1 minute 10. Drive 31-44mph, AC off, OD off in drive: 2 minutes 11. Turn off, add 4 gallons fuel, idle 10 minutes, ignition key off for 10 seconds 12. Drive 50-60mph, OD off, engine rpm over 3000: 3 minutes 13. Drive 53-58mph, AC on, OD on, engine 1800-2100, cruise control ok: 3 minutes End catalyst test 14. OD off, release accelerator 5 seconds, idle 1 minute 15. AC off, 2nd gear, engine 3000, accelerate to 41, down to 34, up to 41, do not completely release accelerator: 2 minutes 16. Idle 1 minute 17. Drive 31-44mph, AC off, OD off in drive: 2 minutes 18. Turn off End
The od light means that the over-drive is off. Pushing the little button on the shifter selector will turn it on (when the dummy light is not on) and off (when the dummy light is lit).
When you see the OD off indicator on the dashboard, you drive the car with higher rpm. It gives you extra performance but shortens the lifetime of the engine.