Starting the Engine
WARNING
Always wear appropriate shoes when driving. Improper shoes, such as high heels, ski boots, sandals, slippers, etc., may interfere with proper use of the brake, accelerator and clutch pedals.
✽ NOTICE
- The engine will start by pressing the engine start/stop button only when the Smart Key is inside the vehicle.
- Even if the Smart Key is inside the vehicle, if it is far from the driver, the engine may not start.
- When the Engine Start/Stop button is in the ACC or ON position, if any door is opened, the system checks for the Smart Key. If the Smart Key is not in the vehicle, the "
" indicator and the "KEY OUT" indicator will flash, and if all doors are closed, a warning chime will sound for about 5 seconds. The indicator will turn off when the vehicle moves. Keep the Smart Key in the vehicle when using the ACC position or when the engine is running.
1. Always carry the Smart Key with you.
2. Make sure the parking brake is set.
3. Make sure the shift lever is in P (Park).
4. Depress the brake pedal.
5. Press the Engine Start/Stop button.
✽ NOTICE
- Whether the engine is cold or warm, always start the vehicle with your foot on the brake pedal. Do not depress the accelerator pedal while starting the vehicle. Do not race the engine during warm-up.
- In very cold weather (below -18°C / 0°F) or after the vehicle has not been driven for several days, allow the engine to warm up without pressing the accelerator pedal.
CAUTION
To avoid damage to the vehicle:
- If the engine stalls while driving, do not try to shift the shift lever to P (Park). If traffic and road conditions permit, you may shift the shift lever to N (Neutral) while the vehicle is still moving, and press the ENGINE START/STOP button to try to restart the engine.
- Do not push or tow the vehicle to start the engine.
CAUTION
To avoid damage to the vehicle:
Do not press the engine start/stop button for more than 10 seconds, except when the stop lamp fuse has blown.
When the stop lamp fuse has blown, you cannot start the engine normally. Replace the fuse with a new one. If you cannot replace the fuse, you can start the engine by pressing and holding the engine start/stop button for 10 seconds with the engine start/stop button in the ACC position.
For safety, always depress the brake pedal before starting the engine.

✽ NOTICE
If the Smart Key battery is discharged or the Smart Key does not operate properly, you can start the engine by pressing the ENGINE START/STOP button with the Smart Key in the direction shown in the illustration above.
Test yourself
A quick Hyundai Tucson LM quiz: every answer comes with an explanation and a link to the manual page.