A car key is just as important as a house key. Without a car key, the car cannot be opened and started. Likewise, if the car key is lost, it is tantamount to putting the car in danger and the owner may suffer property damage at any time. So what should I do if the car key is lost?
After the car key is lost, the best way is to replace the whole car lock, including door locks, trunk locks, etc. This can be said to reduce the risk of vehicle theft to zero, but the cost is relatively large. Is there nothing other than the replacement of the whole car lock? Have. However, it has to face certain risks. Here are some of the risks that may be faced by different anti-theft systems. The owners may consider the situation themselves.
Basic knowledge about car keys:
Now the car keys use chips, which are magnetic chip systems. The reading coil of the car ignition lock core reads the chip of the key; the chip has fixed digital information. Remote control key means that the key can be opened and locked remotely without inserting the key into the keyhole. The biggest advantage is that it is possible to remotely and conveniently unlock and lock the keyhole, regardless of the day and night.
The keyless start adopts radio frequency identification technology to automatically switch the door lock through the sensor in the smart card carried by the owner. That means when you approach the vehicle a certain distance, the door lock will automatically open and release the anti-theft; when you leave the vehicle The door lock will automatically lock and enter the anti-theft state. Generally equipped with a keyless entry system, the vehicle has an inductive button on the door handle, and also has a key hole. In case the smart card is damaged or dead, the owner can still open the door in the normal way. When the owner enters the car, the car's detection system will immediately recognize your smart card. After confirming that the car's internal computer will enter the working state, you only need to gently press the start button (or knob) in the car. , you can start the vehicle normally. In other words, whether in the car or outside the car, it can ensure that the system can correctly identify the driver in any situation.
There are two kinds of keyless start methods, one is a button type, the ignition button is located at the center console reachable, so it is also called "a key to start"; the other is the knob type, generally located in the original key socket But without turning the key, turn the knob directly to start it.
The smart key activates. The smart key can emit infrared signals. It can open one or two doors, trunk and fuel filling hole cover, and can also operate the car's windows and skylights. The more advanced smart key is like a A credit card, when the driver touches the door handle, the central lock control system starts to work and transmits a wireless inquiry signal. After the smart key card makes a correct response, the lock is automatically opened. The engine will only start when the CPU senses that the key is stuck in the car.
The common keyless entry system, also called the smart key system, is composed of a transmitter, a remote central lock control module, a driver authorization system control module, and three receivers and associated harnesses. The remote controller and transmitter are integrated in the car key. The vehicle can enter the locked or unlocked state according to the signal sent from the smart key, and can even automatically close the window and the sunroof.
This system uses RFID (radio frequency identification) technology. Usually, when the owner approaches the vehicle within approximately one meter, the door lock will automatically open and release the anti-theft; when leaving the vehicle, the door lock will automatically lock and Enter the security state. When the car owner enters the car, the car detection system will immediately recognize the smart card. At this moment, you can start the car normally only by gently pressing the start button (or knob). The car key does not have to be taken out during the entire process.
What should I do if I lose my car key?
The first thing to judge is whether the lost key was stolen or really lost. If it is stolen, it is strongly recommended that you replace the whole car lock. Changing the whole car lock can completely eliminate security risks. If it is uncertain or determined to be lost, depending on the circumstances, a steering wheel lock may be added to a car without engine anti-theft. At the very least, the car is stolen.
Mechanical anti-theft system
Mechanical anti-theft is the most primitive type of anti-theft, and some low-end vehicles are now often equipped with such systems. The only anti-theft barrier for mechanical anti-theft is the car lock. Similar to the home door key, as long as the key can open the door, the engine can be started.
After the key is lost, as long as you can find the spare key, you can re-matching it. Buying a key embryo, slotting, and a roadside stall with a key can do this. Although the newly slotted key can be used, the previously lost key can also open the door and start the engine, resulting in a greater safety hazard. If all two keys are lost (there are no spare keys), the entire vehicle lock can only be replaced.
Electronic anti-theft system
The electronic anti-theft system adds a remote controller on the mechanical basis, the remote controller unlocks, and the mechanical key starts the engine. Do not press the remote control hastily opened the door, the car will have an alert.
After the key is lost, the method is similar to the mechanical one. It is worth noting that when the remote controller is matched, both remote controllers must be present and they must be matched at the same time. Otherwise, if only one remote controller is matched, the other remote controller will be ignored. used. Similarly, after the match, the missing remote control cannot open the door, but the lost key can force open the door and start the engine. There is also a security risk. If all two keys are lost (there are no spare keys), the entire vehicle lock can only be replaced.
Chip type anti-theft system
The chip type anti-theft system not only has mechanical anti-theft, electronic anti-theft, but also an engine anti-theft. This anti-theft system is to add a chip inside the key, a signal receiver is added in the ignition switch, the signal match between the two, the engine can start, otherwise, the engine will not only not start, the engine will lock itself. Many cars on the market today are chip-type anti-theft systems.
After the key is lost, the method is similar, except that the match here is not only the remote control match, but also the re-encoding of the key chip. Matching still requires two keys at the same time. After the match is complete, the lost key can still force the door to open, but the engine cannot start.
If all two keys are lost (there are no spare keys), the entire vehicle lock can only be replaced. However, there are also some high-end cars that can use the VIN code to retrieve car key information. There is also the possibility of re-matching. But even if it is matched, it is recommended to replace the whole car lock for safety.
Daily use precautions for car keys
1, every time you get off, even if it is a few minutes to get off, you must turn off the key to unlock the car, do not give thieves an opportunity.
2, the car key should pay attention to waterproof, prevent violent vibration, away from magnetic interference, if the key is damaged, also need to be replaced.
3, spare key and master key should be separated, do not lock the spare key in the car, especially one-button start or with engine anti-theft, spare key can start the engine.
4, if the key can not be matched after losing the key, do not put valuables in the car, consult with the insurance company on the relevant rules of compensation for theft of the vehicle, in case of lack of evidence of loss of evidence in case of vehicle theft.
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