With these 4 signs, your car key will run out of power!

The development of technology has brought a lot of convenience to our lives, and the car key is one of them. From mechanical keys to remote keys to smart keys, car keys carry more and more versatility and are more convenient to use, but if it suddenly runs out of electricity, especially when you need to use a car in an emergency, it is more troublesome. So, how long can the remote control key battery last, and what will be the symptoms before it runs out of power?
The remote control key of the car is small, so it doesn't pay much attention when it is worn on the body, and it doesn't cost much electricity when it is turned on and off. The battery life of a general car remote control key is 2-4 years, depending on the vehicle model and frequency of use.
Because the time span is large, everyone will not pinch the days to calculate how long it can last. If it suddenly runs out of power one day, no one needs to worry.

Generally, the remote control key will be equipped with a mechanical key, either hidden in it or hung on one side. When the remote key is out of power, the mechanical key becomes a lifesaver. Generally, the door lock is on the handle. Some models hide the lock hole for beauty, but they are all near the handle.
In fact, when the remote control key is out of power, it is usually not unexpected. When it is almost out of power, there will be the following symptoms:

1. The remote control distance becomes shorter

It turned out that the door can be opened at 5 or 6 meters, but now it must be close to the door to respond. It is possible that the power of the key changes and the voltage is low. As a result, the remote controller's ability to transmit signals decreases, and the remote control distance becomes shorter.

2. Occasional failure, press a few times to succeed

When I opened the door, I pressed it several times, and only one of them was responsive. I pressed it a few times to successfully unlock it.
3. The key indicator is darker than usual

Pay attention to the indicator light on the key. When you press the button, the indicator light is dimmer than usual, or it is always dark, then you should prepare to replace the battery.

4. Direct display of instrument panel

Some models will directly display the remaining power of the remote control key on the dashboard. As long as you notice that there is little power left, you can replace it in time.

When you find that the battery has not been replaced for a long time, but the operation of the car key fails, it is not necessarily the reason that the key is dead, there may also be a source of interference nearby. Because the key uses electromagnetic waves to send an indication signal, if there is a strong magnetic field around the parking location, it will also affect the use of the remote control key.

The transmission frequency of most car remote keys is between 315 MHz and 434 MHz. In this vicinity, there are many signal sources with the same frequency, and they will interfere with each other.
In addition, it is worth noting that there is a theft crime by means of interfering with the remote control key to open and close the door. When you are ready to open and close the door, the criminals will use the jammer on the side. When you press the button to think that the door is closed, the vehicle is disturbed by the jammer and cannot receive the command of the remote control key. At this time, the door is not closed. After you leave, criminals will loot the property in the car. Therefore, in order to ensure foolproof, it is best to pull the door subconsciously after locking the door. (For keyless entry, you can observe the double-flash indicator at a long distance)

Another common reason is that the battery of the vehicle is dead. The way to judge is to first drive the car and turn on the headlights. If the light slowly weakens, or does not even light at all; when you press the horn, the sound gradually decreases, which means that the battery is dead.