Hyundai Tucson: Engine Start/Stop button
Whenever the front door is opened, the Engine Start/Stop button will illuminate and will go off 30 seconds after the door is closed.
To turn the vehicle off in an emergency: Press and hold the Engine Start/Stop button for more than two seconds OR Rapidly press and release the Engine Start/Stop button three times (within three seconds).
If the vehicle is still moving, you can restart the vehicle without depressing the brake pedal by pressing the Engine Start/Stop button with the gear in the N (Neutral) position.
- NEVER press the Engine Start/Stop button while the vehicle is in motion except in an emergency. This will result in the vehicle turning off and loss of power assist for the steering and brake systems. This may lead to loss of directional control and braking function, which could cause an accident.
- Before leaving the driver's seat, always make sure the gear is in the P (Park) position, set the parking brake, press the Engine Start/Stop button to the OFF position, and take the Smart Key with you. Unexpected vehicle movement may occur if these precautions are not followed.
- NEVER reach through the steering wheel for the Engine Start/Stop button or any other control while the vehicle is in motion. The presence of your hand or arm in this area may cause a loss of vehicle control resulting in an accident.
Engine Stop/Start button positions
To turn off the engine, press the Engine Start/Stop button with the vehicle shifted to P (Park).
Note if the Engine Start/Stop button is pressed with the vehicle shifted to D (Drive) or R (Reverse), the gear will automatically shift to P (Park).
If the Engine Start/Stop button is pressed with the gear shifted to N (Neutral), the Engine Start/ Stop button will change to the ACC position.
The steering wheel locks to protect the vehicle from theft.
- If the steering wheel is not locked properly when you open the driver's door, the warning chime will sound.
Press the Engine Start/Stop button when the button is in the OFF position without depressing the brake pedal.
Some of the electrical accessories are usable.
The steering wheel unlocks.
- If you leave the Engine Start/Stop button in the ACC position for more than one hour, the battery power will turn off automatically to prevent the battery from discharging.
- If the steering wheel doesn't unlock properly, the Engine Start/ Stop button will not work. Press the Engine Start/Stop button while turning the steering wheel right and left to release.
Press the Engine Start/Stop button while it is in the ACC position without depressing the brake pedal.
The warning lights can be checked before the engine is started.
- Do not leave the Engine Start/Stop button in the ON position when the engine is not running to prevent the battery from discharging.
To start the engine, depress the brake pedal and press the Engine Start/ Stop button with the gear shifted to the P (Park) or the N (Neutral) position.
For your safety, start the engine with the gear shifted to the P (Park) position.
- If you press the Engine Start/Stop button without depressing the brake pedal, the engine does not start and the Engine Start/Stop button changes as follows: OFF → ACC → ON → OFF or ACC
Starting the engine
- Always wear appropriate shoes when operating your vehicle. Unsuitable shoes, such as high heels, ski boots, sandals, flipflops, etc., may interfere with your ability to use the brake and accelerator pedals.
- Do not start the vehicle with the
accelerator pedal depressed.
The vehicle can move which can lead to an accident.
- Wait until the engine RPM is normal.
The vehicle may suddenly move if the brake pedal is released when the RPM is high.
- The vehicle will start by pressing the Engine Start/Stop button, only when the smart key is in the vehicle.
- Even if the smart key is in the vehicle, and when it is far away 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 open, the system checks for the smart key. When the smart key is not in the vehicle, the " " indicator will blink and the warning 'Key not in vehicle' will come on. When all doors are closed, the chime will also sound for about 5 seconds. Keep the smart key in the vehicle.
- Always carry the smart key with you.
- Make sure the parking brake is applied.
- Make sure the shift lever/button is in P(Park).
- Depress the brake pedal.
- Press the Engine Start/Stop button.
- Do not wait for the engine to warm up
while the vehicle remains stationary.
Start driving at moderate engine speeds. Steep accelerating and decelerating should be avoided.
- Always start the vehicle with your foot
on the brake pedal. Do not depress the
accelerator while starting the vehicle.
Do not race the engine while warming it up.
To prevent damage to the vehicle:
- If the engine stalls while you are in
motion, do not attempt to shift the
gear to the P (Park) position.
If traffic and road conditions permit, you may put the gear in N (Neutral) while the vehicle is still moving and press the Engine Start/Stop button in an attempt to restart the engine.
- Do not push or tow your vehicle to start the vehicle.
To prevent damage to the vehicle: Do not press the Engine Start/Stop button for more than 10 seconds except when the stop lamp fuse is blown.
When the stop lamp fuse is blown, you cannot normally start the engine.
Replace the fuse with a new one. If you are not able to 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 your safety always depress the brake pedal before starting the vehicle.
If the smart key battery is weak or the smart key does not work correctly, you can start the vehicle by pressing the Engine Start/Stop button with the smart key in the direction of the picture above.
Turning off the engine
- Stop the vehicle and depress the brake pedal fully.
- Make sure the shift lever/button is in P(Park).
- Press the Engine Start/Stop button to the OFF position and apply the parking brake.
Auto shut-off system (if equipped)
To prevent accidents caused by carbon dioxide poisoning, the engine is turned off automatically 60 minutes later when the following conditions are satisfied.
The timer appears on the instrument cluster 30 minutes before it turns off automatically.
- The driver does not fasten a seat belt
- No one in the passenger's seat
- Stop the vehicle and the speed is under 1.86mph and the gear shift is in P
- While the brake or accelerator is not working
- When AVN update is performing
Cluster timer reset conditions
- Release the accelerator or brake after completing operation
- Press the OK button on the steering wheel while the timer appears on the instrument cluster
- The driver fastened the seat belt
- A passenger is in the pasenger's seat
- Driving over 1.86mph
- Shifting the gear in R, N or D
Please do not leave a passenger or a pet in the vehicle since the air conditioning system stops when the engine is off.
Remote start (if equipped)
You can start the vehicle using the Remote Start button of the smart key.
To start the vehicle remotely:
- Press the door lock button within 10 m (32 feet) from the vehicle.
- Press and hold the remote start button ( ) within 4 seconds after pressing the Door Lock button on the remote.
- To turn off the remote start function, press the remote start ( ) button once.
- The remote start ( ) button may not operate if the smart key is not within 10 m (32 feet).
- The vehicle will not remotely start if the engine hood or liftgate is opened.
- The vehicle must be in P (Park) for the remote start function to start.
- The engine turns off if you get in the vehicle without a registered smart key.
- The engine turns off if you do not get in the vehicle within 10 minutes after remotely starting the vehicle.
- Do not idle the engine for a long period.
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual