Other attributes
Keyless entry system is an electronic lock that, with its technology, allows you to enter a car, apartment or building without a mechanical key.
Initially, this term was used exclusively for locks with a keypad for entering a password. Now this system works with the help of a remote control, which works at a certain distance.
Hystory
One of the first appearances of this system was in 1980 on the Ford Thunderbird, Mercury Cougar, Lincoln Continental Mark VI and Lincoln Town Car. Initially, it was a keypad with five buttons on the driver's door and when you enter the code, the door opens. Since 1984, Nissan has introduced the same technology in essence, with some additional features (opening windows, opening the sunroof), also placing this remote control on the passenger door.
System
Keyless remotes contain a short range radio transmitter and must be within a certain range, typically 5–20 meters, from the vehicle to operate. When the button is pressed, it sends a coded signal via radio waves to a receiver in the car, which locks or unlocks the door. Most RKEs operate at 315 MHz for North American vehicles and at 433.92 MHz for European, Japanese and Asian vehicles. Modern systems since the mid-1990s have implemented encryption, as well as interleaved entry codes, to prevent car thieves from intercepting and spoofing the signal. [3]Earlier systems used infrared instead of radio signals to unlock the car, such as systems from Mercedes-Benz, [4] BMW [5] and other manufacturers.
The system signals that it has either locked or unlocked the vehicle, usually with some rather discreet combination of flashing car headlights, a distinctive sound other than the horn, or some use of the horn itself. A typical setup on cars is to sound the horn or other horn twice to indicate the car has been unlocked and once to indicate the car has been locked. For example, Toyota, Scion, and Lexus use a chirp system to indicate when a car is locked/unlocked. While two beeps means the driver's door is unlocked, four beeps means all doors are unlocked. One long beep refers to the trunk or power tailgate. One short beep means the car is locked and an alarm is set.
The functions of the remote keyless entry system are contained on the key fob or built into the ignition key handle itself. The buttons are used to lock or unlock the doors and open the trunk or tailgate. On some minivans, power sliding doors can be opened/closed remotely. Some vehicles also close all open windows and roof when the vehicle is remotely locked. Some remote controls are also equipped with a red panic button that activates the car alarm as a standard feature. An added convenience is that the engines of some vehicles with remote keyless ignition systems can be started by pressing a button on the key fob (useful in cold weather), and the convertible top can be raised and lowered from outside the vehicle when it is parked. .
In vehicles where the trunk lock is electronically controlled, it can be opened using a button on the remote control. Traditionally, the trunk is spring-opened using hydraulic struts or torsion springs, after which it must be manually lowered. Premium models such as SUVs and station wagons with a tailgate may have a motorized assistant that can both open and close the tailgate for easy access and remote control.
For offices or residences, the system can also be linked to a security system, garage door opener, or remotely activated lighting fixtures.
