What are the reasons for the inability to turn off the engine with one-button start?

[LaKennedy]

There are several reasons why the engine cannot be turned off with one-button start: 1. Different models, different operations: The operation varies among different car models. Some models require a long press to turn off the engine, while others need to be pressed twice—once to turn off the engine and again to cut off the power to the entire vehicle. Some models only require a single press to turn off the engine. 2. Key not detected: Sometimes, strong nearby magnetic fields can cause interference, preventing the key from being detected. Solution: Align the key with the one-button start. 3. Battery issues: The engine may also fail to turn off if the battery is dead or its voltage is below 12V. In such cases, a long press can turn off the engine.

[OEmerson]

I think the inability to turn off the engine with the one-touch start is mostly due to electronic system issues. A stuck button is the most common problem—like when I encountered a button soiled with dirt and couldn't press it down. Improper transmission position is another issue; if the car isn't in Park (P), the system will refuse to shut off, so always ensure you shift to the correct gear when parking. If the brake isn't pressed firmly enough, the sensor may not detect a safety signal, causing the system to hang. More severe cases, like a weak battery or control unit failure, can lead to signal loss and prevent the engine from shutting down. I recommend first lightly pressing the start button to check for sticking, then shifting to P and firmly pressing the brake again. If that doesn't work, consider temporarily disconnecting the battery or calling for repairs immediately to avoid risks like overheating or further damage. Regular maintenance, such as keeping the button clean and checking the system, can significantly reduce failure rates.

[ElianaLynn]

I have personal experience with this issue. The inability to turn off the engine with one-button start usually has a few simple causes. Button malfunction is the most common, such as button aging or being stuck due to foreign objects blocking it. The system automatically locks the shutdown function when the car is not in the P position, so confirming the gear is properly engaged is crucial. Not pressing the brake pedal firmly enough can also affect it; you need to press it firmly to trigger the sensor. Occasionally, insufficient battery power can interfere with signal transmission. I've encountered this myself—just press the button a few more times to check the situation and ensure the gear and brake positions are correct. If the problem persists, turn off the engine using alternative methods, such as disconnecting the auxiliary power supply for emergencies. Remember these common points and develop standardized operating habits in your daily driving.

[AugustDella]

I recommend troubleshooting step by step. Start with the basics: check if the car is in Park (P) gear, switch to the correct position, and try turning off the engine again. Then firmly press the brake pedal, as the system requires a safety signal input to respond. Next, inspect if the start button is stuck or dirty—gently press and clean the surface. If the issue persists, it might be an error in the electronic control unit or a battery problem—try restarting the engine or temporarily disconnecting the battery cables. Be patient throughout the process to avoid damaging components with forced operations. If all else fails, contact professional repair services. For similar faults, confirm these steps first to quickly identify the problem.