20 Myths About Automotive Locksmith Key Programming: Dispelled

· 6 min read
20 Myths About Automotive Locksmith Key Programming: Dispelled

Automotive Locksmith Key Programming

The majority of modern cars require some kind of key programming. Based on the model and manufacturer, the process may be as simple as using an extra key to program the onboard computer or as complex as OBD2 programming or EEPROM.

The majority of US and Asian auto manufacturers share their programming protocol with auto tool makers, which means they can develop software or hardware for automotive locksmiths.

Transponder Chips

Most newer cars use transponder chips in order to prevent theft. These are microchips in the form of computers that emit low-level radio signals. The microchips have a unique serial number that authenticates your key whenever you plug it into the ignition barrel. If your vehicle doesn't recognize the signal it will shut down the engine. This technology has been an enormous success in preventing theft of cars. This technology has also helped car owners save a huge amount of money by not having to replace their vehicles.

The principle of the transponder system is to make it impossible for thieves to get into your vehicle without the correct key. In the past, thieves used the flat screwdriver to push the ignition switch in your car to go into "on" mode, or hot-wire it in order to bypass the system. Transponder chips have drastically decreased the likelihood of theft.

When you insert the transponder keys in the ignition the signal is picked up by an antenna hidden around the barrel. This antenna is programmed with the frequency of the chip within the key. The car's computer onboard will detect that the key is legitimate and allow fuel to flow, power up the starter or begin it.

Some vehicles only recognize a certain type of transponder chip, depending on the manufacturer. This is why it is essential to ensure that your automotive locksmith has the right equipment to program your car's key and fobs properly.

A reliable locksmith for cars will have a multi-vehicle programming tool that can be used on many different models and brands of cars. This is a more cost-effective option than purchasing separate tools for each brand of vehicle. These are less common but there are automotive key programming tools that can only be used on a specific model of vehicle. The best automotive locksmiths will have the proper equipment to tackle any type of vehicle, so be sure you choose a reputable firm that offers these types of tools.

Key FOBs

As the name implies, key FOBs house the transponder chips that can be programmed to enable your vehicle to identify and unlock the doors or start the engine with a push-button ignition. You can also press buttons to activate features like trunk releases, door locks or control of the fuel flap. Some fobs can be controlled by pressing buttons. For instance, a "smart key" that lets you call your car into tight parking spaces, like a Tesla or Genesis GV60.

While some replacement key fobs can be programmed by you with the aid of a user's guide however, you'll typically need an automotive locksmith to get a brand new one programmed if yours stops working. This is because a professional has the right equipment and access to the programming tools required to connect your car's computer via the on-board diagnostics (OBD) port that is located under the steering wheel.

The majority of key fobs come with security features that make it harder for attackers clone and replicate the signals they transmit. They include pseudo-random sequence generators that generate a new unlock code every time you press the key fob's button. This prevents attackers capturing and replaying the unlock signal in order to gain access to your vehicle.

In some instances you can purchase the replacement keyfob at an auto dealer or other retailer. The locksmith you choose to use will then program it to work with your vehicle. This is because most of the major US and Asian car manufacturers have key fob programming protocols with third-party companies that make the tools that auto locksmiths employ to program their customers' keys.

Some aftermarket key fobs may be advertised as being compatible with vehicles of all kinds. However, automotive locksmiths advise against using them since they are likely to work poorly or not at all. They suggest purchasing fobs that are designed specifically for your vehicle so that they work correctly and are less prone to issues like interference or incompatibility. This will save money in the long run by avoiding costly repairs or replacements for your fobs.

Tool for Programming Vehicle Manufacturers'

The automobile industry has made significant strides in the last few decades. Today's vehicles are computer-driven. A transponder chip is an important part of this technology. It must be programmed by a locksmith, mechanic or dealer to function. Key fobs come with built-in security features that will prevent hot-wiring (like in a movie) and the car won't start without the proper key.

Key fobs are more complicated than a mechanical keys, which is why you'll usually find them in the hands of an expert professional auto locksmith. The cost of the car key fob is dependent on the type and model of key, but it is generally between $85 and $400. This includes labor costs to program the keyfob and any replacement parts.

To make the process more complicated the car key fobs utilize a specific software system to work with the car's onboard computer. The software blocks access to unauthorized users by allowing the key to operate only if it's programmed to the car in question. If you decide to replace your keys, you will have to program the new key fob to the car to allow it to function.

The most common way to do this is by using a  car key programming  tool that is compatible with the model of the vehicle. This tool permits a locksmith to connect to the OBD port of the vehicle and then enter the programming mode. The key programming device can be an handheld device that is inexpensive or one that is fancy and can do more than just program keys (like reading the eeprom file inside the ECU).

While some people may attempt to program their own keys using these tools, this is a job best left to an experienced auto locksmith. If you're not familiar with the ins and outs of the various software systems, it's possible to make a mistake and alter settings that could damage the vehicle. The most important thing to remember is that a professional with experience can help you avoid these issues.

On-Board Programming

If your car is older than, it may still come with a key made of steel that you can use to unlock doors and turn on the ignition. Modern cars come with transponder chips that must be recognized by the computer system of the car in order to start. This is an additional layer of protection that can stop car thieves from starting a car stolen and driving off with it. A locksmith certified will have the tools and software required to program a key that will function in your car's system.

The locksmith will require an uncut key that is compatible with the make and model of your car. Once your locksmith has the key, he'll connect the scanner for programming to the diagnostic port of your vehicle. This will put your car into a special programming mode that allows the locksmith to add a new key into the system.

The key programmer scanner communicates with the computer in the vehicle to transmit an electronic code. The computer will recognize the code and add it into the list of keys that are approved. In some instances, a scanner can also remove keys that have been stolen or lost.

EEPROM programming is another method that can be used to program new car keys. It is more complicated and requires an in-depth understanding of how electronic systems operate. This is why it's best left to a professional who has a lot of expertise working on these types of systems.

Onboard programming is the fastest way for a locksmith to program the new key. If everything is done properly it could take just one minute. If the key isn't in correct state or the procedure isn't followed exactly, it can take up to an hour.



There are many different key programmer scanners which can work with different makes and models of vehicles. The Smart Pro and the Autel IM608 Pro are both extremely well-liked by locksmiths due to the fact that they support a broad range of vehicles. There is no system that can program every vehicle. They are also expensive. It is recommended to purchase a programmer which will receive regular updates from the manufacturer as new technologies are released. In the event that your machine is not updated, it will soon become obsolete.