Urgency: Low
Overdrive (O/D Off) Light
This is usually informational. Address it at your convenience.
What the Overdrive (O/D Off) Light Means
The overdrive (O/D OFF) light on a your car shows that overdrive — the transmission's fuel-saving top gear — has been switched off, usually via a button on the shifter. It is a driver setting, not a fault.
Common Causes
- Overdrive switched off by button (normal)
- Selected for towing/hills
- Transmission fault forcing O/D off
- Faulty O/D switch
How to Fix It
- Press the overdrive (O/D) button to toggle it back on
- Confirm the light goes out and top gear returns
- If it will not re-enable, scan the transmission
- Check the O/D switch operation
- Diagnose the gearbox if a fault is holding it off