How to Program a Car Key
Modern cars come with more than a key that can start the engine. They also come with a remote that can lock or unlock doors. Key fobs must be programmed in order to function properly.
Some car keys can be programmed by the owner himself, but it's best to consult with an expert. This will help prevent any possible damage to the car's computer system and also ensure that the new key functions correctly.
How to program a Key
The majority of cars had basic keys systems prior to the turn of 21st century. Keys themselves were metal and featured grooves that were connected to the internal parts of the ignition cylinder. As technology advanced, more and more automobile makers began to mix electronic and physical protocols in order to prevent theft. These key systems are called transponder keys or chip keys, and are designed to make it difficult for thieves to get into the vehicle.
The key chips in the keys have a specific serial number, which transmits signals to the receiver inside your car. When the signal is received it is compared to an existing code in the car's computer. If the codes are identical, your car will begin. If not, it will not start at all. This is the reason you should keep an extra car key, particularly if your system is based on transponders.
If you're interested in learning how to program keys, you'll need some special equipment. You'll also require the blank key for your particular make and model. You can purchase them from a locksmith or a car dealership, but it's essential to buy the right one. If you use a key from another model, it will not function.
Start the process by inserting the new key in the ignition and turning it "on". You'll need to keep the key in this position for about 10 minutes and 30 seconds. Once the time has expired you can take off your key and verify that the security indicator on your dashboard has gone out. If it didn't then you'll have repeat the process a third time.
Remember that this method will only work with GM vehicles but it's not completely secure. If you're looking for a more secure and reliable solution, then you should consult a professional locksmith or the dealer to have your car programmed with chips. They have the tools and equipment needed to connect to the onboard diagnostic port on your car and make the necessary changes.
Keyless Entry Systems
Keyless entry systems grant access to properties without the requirement of an actual credential. They use sensors in combination with an onboard computer to offer security. It is possible to control and monitor the system from anywhere within the property. Keys and locks are not required. The system can also detect and block stolen or lost cards. The latest models also support remote management and configuration, and are cloud-based.
Modern cars are equipped with keyless entry systems. The system works by emitting radio signals which are detected by the keyfob. The signals are compared to the code stored in the car's computer, and if all is well the car will be able to unlock. The car won't start if the signals are not the same. If your key fob isn't already programmed, it is possible to follow several steps to program it.
You'll first need to make sure that all doors, except the driver's door are locked. You'll also need the original key fob, along with any additional keys you'd like to program. You can also visit your local auto parts store to see if they have the appropriate tool for your vehicle. If these steps don't work, you'll have to consult the owner's manual or an expert locksmith.
Once you have the correct tool, follow the instructions of the manufacturer to begin changing the program of your key fob. This procedure is usually quick and easy. For instance, you could be directed to insert your new key into the ignition with all doors closed and then press a button on the key fob within a brief time. The car might respond by turning off the doors or emitting an audible sound as an indication that the key was successfully programmed.
A lot of locksmiths have tools that allow them to bypass the built-in EEPROM security in your car's key fob or remote. This is a risky technique and can corrupt the data stored in the car's computer. It is recommended to have an expert handle this, as they will be able to lower the risk of data corruption and also ensure that your keys are correctly programmed.
Transponder Keys
Transponder keys, sometimes referred to as chip keys, are equipped with a microchip built into the head of the key. The antenna ring transmits electromagnetic energy to the transponder whenever the key is put in the barrel of the ignition lock. The chip absorbs the energy and then sends a radio frequency signal which contains an identification number. This code matches the unique serial numbers in the computer system of the car. This is to prevent unauthorised attempts to start the car as only the proper keys will be able to do so.
It is believed that this technology will be more secure than conventional car keys because it makes it more difficult for thieves to "hot wire" the vehicle and start it. It's not foolproof and thieves have found ways of tricking and defeating the system. So even cars with transponder keys aren't immune to theft.
You might be able to program a transponder key yourself with an instrument that works with your vehicle. The key programmer will come with a step-by-step guide that will walk you through the procedure of programming your key. Once you have your key and a key programmer, follow the instructions carefully and make sure the security light on your dashboard is turned on prior to turning your engine ON.
If you're not comfortable using a key programmer or if your car has more advanced features like remote head keys or smart keys, you may turn to a professional locksmith help. They will have the tools and equipment necessary to cut blank keys, erase the old one from the computer in the car, and then program the new key to function properly. This will save you time and money and will ensure that your car's security system operating just as it should. It is also safer than making it yourself. Making use of the wrong key programmers or following unofficial instructions could cause a problem with the information stored in your vehicle's system and result in your new key not functioning.
Remotes
It is possible to change the programming of your car keys if they're not working. It's an easy process for the majority of modern cars which use keyfobs. Certain models are more complicated and require a special programming device, which is normally available from the dealer or through auto locksmiths.
Fortunately, the majority of modern automobile manufacturers have made their key systems more secure to prevent theft of vehicles. The key system is designed to prevent hot-wiring (the method of using another vehicle's key to start the engine) and other here similar methods. To ensure that this method works, you will require at least two key fobs functioning for your vehicle. This is one of the reasons why it's best to have at least one spare key on hand.
The key fobs have electronic chips that communicate via radio signals to the car's receiver. The computer compares the code of the key with the database. If the codes match the car starts. If the codes do not match then the car will not start or will remain dead. Fortunately, the majority of electronic keys can be replaced and programmed by an expert auto dealer or a locksmith equipped with the proper equipment.
The process should be relatively easy if you find a low-cost key programmer on the internet or in an auto parts store. You'll need to follow a sequence of steps, which includes inserting the key into the ignition and turning it on, but not activating the engine, then turning the key off. You'll need to repeat this a certain number of times within a certain time period to allow your vehicle to enter programming mode. This will be evident by the door locks cycling or an audible chime.
Some modern vehicles are capable of programming using a device connected to the onboard diagnostic port or EEPROM programming. These tools are expensive and are therefore not affordable for the majority of car owners. The majority of car experts recommend consulting an experienced auto dealer or locksmiths to program your keys.