What are the disadvantages of modifying to a smart key?

[DiPreston]

Modifying to a smart key has disadvantages such as fast power consumption, missing functions, and potential safety hazards. Fast power consumption: The smart key consumes power quickly, requiring charging every half month. Due to the LCD screen and the need to sense signals from the OBU device, the power consumption is particularly fast. Missing functions: The smart key only supports keyless entry but cannot achieve keyless start. If the vehicle uses a mechanical key to start, you still need to take out the original key to start the vehicle after getting in the car, meaning you have to carry two car keys when going out. Safety hazards: When passing by the vehicle, it will unlock automatically, posing potential safety hazards.

[AlainaMarie]

I modified a liquid crystal key myself. At first, it felt really cool with its shiny screen, but after using it for a while, I discovered a bunch of problems. The battery life is terrible—it runs out of power easily, and if I forget to charge it, I can't even open the car door at critical moments, which is super annoying. The button feedback is awful—no tactile response and prone to accidental touches, even turning on the lights feels delayed. If it falls and the screen cracks, repairing it costs hundreds, more expensive than the key itself. In summer, it overheats in my pocket, and in winter, it lags due to the cold—nowhere near as reliable as a traditional key. The compatibility is also poor; sometimes, it has issues connecting with the car lock, causing delays in unlocking and affecting safety. Overall, spending money on this is just asking for trouble—totally not worth it.

[AlexandraDella]

There are quite a few drawbacks to modifying a digital key, so I advise you to think carefully. Spending thousands on a new key doesn't even guarantee it'll work well, and the repair costs are too high—if you break it, replacing the screen could cost hundreds. The battery only lasts a few days before needing a recharge, and if it dies while camping or on a business trip, it could cause major inconvenience. The screen is prone to scratches and glare, the controls aren't intuitive, and the buttons are less comfortable than those on an old-fashioned key. If it malfunctions, repairs are a hassle, requiring a specialized shop. More importantly, it increases security risks—electromagnetic interference could lead to hacking or failure. You'd be better off saving the money and buying some practical accessories instead.

[Pamela]

As a tech enthusiast, I have to point out the drawbacks of modifying to a digital key. It relies on electronic signals which are prone to interference—for instance, in parking lots where other signals might disrupt its unlocking function. The screen drains battery quickly, leading to short battery life and frequent charging needs. The button design is poor, lacking tactile feedback and resulting in high error rates during operation. Compatibility issues are common; post-modification, it may conflict with the car's system and trigger alarms. Once damaged, repairs are costly and may not restore it to perfect condition. It's advisable to avoid the risk of modification—standard keys are both practical and secure.