Engine Start/Stop Button

ENGINE START/STOP Button Illumination
When the front door is opened, and for convenience, the ENGINE START/STOP button illuminates. It turns off about 30 seconds after you close the door. It also turns off as soon as the vehicle is locked with the anti-theft system armed.
ENGINE START/STOP Button Positions
OFF

Not illuminated
- With automatic transmission
To turn off the engine (ON position) or turn off the vehicle power (OFF position), press the ENGINE START/STOP button while the gear shift lever is in P (Park). If you press the ENGINE START/STOP button while the lever is in any position other than P (Park), the button will not switch to the OFF position but will switch to the ACC position instead.
CAUTIONYou can turn the engine off (START/RUN) or cut the vehicle power (ON) only when the vehicle is not moving. In an emergency while the vehicle is moving, you can turn off the engine and switch to ACC by pressing the ENGINE START/STOP button for more than 2 seconds or 3 times in a row within 3 seconds. If the vehicle is still moving, you can restart the engine without depressing the brake pedal by pressing the ENGINE START/STOP button while the shift lever is in N (Neutral).

Orange indicator
ACC (Accessory)
- With automatic transaxle
Press the ENGINE START/STOP button when it is in OFF, without depressing the brake pedal.
If the ENGINE START/STOP button is left in ACC for more than one hour, the button will turn off automatically to prevent battery discharge.

Green indicator
ON (Power on)
- With automatic transmission
Press the ENGINE START/STOP button when it is in ACC, without depressing the brake pedal.
Warning indicators can be checked before the engine starts. Do not leave the ENGINE START/STOP button in ON for too long. The battery could discharge, preventing the engine from starting.

Not illuminated
START/RUN (Start/Run)
- With automatic transmission
To start the engine, depress the brake pedal and press the ENGINE START/STOP button while the shift lever is in P (Park) or N (Neutral). For safety, start the engine with the shift lever in P (Park).
NOTICE
If you press the ENGINE START/STOP button without depressing the brake pedal, the engine will not start and the button will cycle through the positions as follows: OFF - ACC - ON - OFF or ACC
NOTICE
You may discharge the battery if you leave the ENGINE START/STOP button in ACC or ON for too long.
WARNING- Never press the ENGINE START/STOP button while the vehicle is moving. You could lose control of the steering and brakes, which could result in an accident.
- The steering wheel lock does not replace the parking brake. Before leaving the driver's seat, always make sure the shift lever is in P (Park), set the parking brake and turn off the engine. Sudden, unexpected vehicle movement can occur if you do not take these precautions.
- Never try to reach the ENGINE START/STOP button or any control by reaching your arm through the steering wheel while the vehicle is moving. Your hand or arm inside the steering wheel can cause loss of vehicle control, resulting in an accident and serious or fatal injury.
- Do not place any loose objects around the driver's seat, as they could move while you drive and interfere with vehicle control, resulting in an accident.
Test yourself
A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.