Ever Wondered How Remote Controlled Keys Work?
The term remote keyless system (RKS), also called keyless entry or remote central locking, refers to a lock that uses an electronic remote control as a key. Entry is activated by a handheld device (remote controlled key) when in close proximity, usually within 5 to 20 metres of the vehicle.
One Trillion Possibilities!
Inside the key fob, or these days, in the head of the key, there is a small transponder chip (about the size of a pea) that creates the code which is transmitted to the lock. The chip uses a transmission code called a ‘rolling code’ which means the code is different every time the remote keyless system is used. For example, a device that uses a 40-bit rolling code provides about one trillion possible codes.
What Is Remote Access Technology Used For?
The use of such technology has been designed to prevent easy theft of vehicles. When a button on the key or fob is pushed, it sends that 40-bit code and a function code to the vehicle that tells the car what is required, ie. lock the doors, unlock the doors, open the trunk, perform a panic function, etc. A remote keyless system can include both a remote keyless entry system (RKE), which unlocks the doors, and a remote keyless ignition system (RKI), which starts the engine.
When Did Remote Keyless Systems First Begin?
In 1980, one of the first remote keyless systems were installed on the Ford Thunderbird, Mercury Cougar, Lincoln Continental Mark VI and the Lincoln Town Car. Ford called this system the ‘Keyless Entry System’ which used a locking system controlled by a keypad located at or near the driver’s door. In 1984, Nissan offered the same technology, but with more options including remote controlled access to the windows and the sunroof. Renault was also an early adopter introducing handheld transmitters in 1982. By 1989, the system gained widespread popularity and was used on several General Motors vehicles.
Can I Accidentally Open Someone Else’s Car?
It is actually nearly impossible for any RKE to open any other car door. Given the 40-bit code in the remote keyless entry device, four transmitters in the vehicle and up to 256 levels of look-ahead pseudo-random number generation to avoid desynchronizing, there is a one-in-a-billion chance of opening another person’s car door with a remote access transmitter (or remote controlled key).
As well, all car manufacturers use different systems with ever-changing technology, making it further impossible for any RKE to open another car door by accident.
What To Do If Your Remote Keyless System Stops Working
If your remote keyless system stops working (eg. due to a drop, or immersion in water) the transponder chip in the key will need to be reprogrammed. Vehicle manufacturers usually supply a card containing a unique code when the car is new. Auto locksmiths normally require this code in order to reprogram the key’s transponder chip to the vehicle. If the remote access key has been lost or misplaced, the transponder unit in the vehicle can be reprogrammed instead. In this respect, it is therefore good to have a working spare key on hand.
To organise a spare remote key for your car, with secure code data storing, give the guys at Blacks Mobile Locksmith, Beenleigh, a call today on 07 3382 0755 - and never get caught without access to your vehicle again!.
Need a Spare Remote Key or Transponder?
Whether your remote has stopped working or you simply need a backup, Blacks Mobile Locksmiths can program, replace, and diagnose vehicle remote keys for most makes and models.
