Replacement Car Key Fobs
Replacement of fobs that are more complicated or part of sophisticated security systems for vehicles could be expensive and require special equipment which is usually only available at dealerships.
The replacement of the coin-shaped batteries is usually around $10. You can buy an alternative battery at hardware stores or big-box retailers.
Keyless Entry
Key fobs are used to unlock and begin cars. Fobs typically include a battery and a small transponder which communicates with the computer in the vehicle to verify the identity of the owner. This helps in preventing theft since the vehicle only responds to keys registered to it. The fobs can do much more now than just opening the doors of a vehicle or turning it on. They can also open a door or call, auto-park a car, and switch on the interior lights. Some even come with an integrated GPS. These advanced features are convenient, but they can also make fobs more expensive to replace and less lenient in the event of misuse.
Based on the make and model of your vehicle, you can choose among three types of replacement key fobs. The type you choose will determine the price, whether you can replace it yourself and whether you need to visit an authorized dealer to reprogramme it.
The simplest key fob is a car key with buttons for remote start and unlocking doors. Some look like a switchblade key and are able to tuck into the shank when not in use to reduce their size. The key fob has an RFID system that can deter thieves. It makes sure that the car will only respond to a verified, authentic key.

Modern fobs may not be keys at all they are instead wireless transmitters that communicate with the computer in the car to unlock doors or activate the starter. They can also be used to activate certain features, such as the air conditioning, or the alarm. This type of replacement key fob can be more expensive than other types and is often only programmable at the dealer.
A few aftermarket fobs are offered on the internet and advertised as working with a variety of makes and models. However, the majority of these fobs require reprogramming by a professional in order to work correctly with your specific car. You can do it yourself if you follow the instructions in the owner's manual and have a functioning key fob.
Immobilizer
Immobilizers for cars are an additional layer of protection against theft. When keys are inserted into the ignition, the transponder chip in the key fob sends an indication to the receiver in the car's ECM (electronic control module). If the chip does not match the serial number that is in the database the immobilizer will stop the engine from beginning. This extra security feature can help to stop thefts of vehicles, especially in areas that have high crime rates.
Key fobs come in multiple designs. Transponder keys and smart key shafts are different from traditional keys. These key fobs offer remote locking and unlocking as well as keyless entry and starting. Due to their advanced technology and multiple features, these types of keys are more expensive to make and replace.
To replace a key that has been lost and to replace it, call a locksmith or an authorized dealer. A professional can use the key's number and immobilizer code to reset the system and create a new key. This process can be expensive and lengthy, however. You may have to pay extra if you lose your key after normal business hours.
Most replacement keys are laser cut and therefore more difficult to duplicate than a traditional metal or a traditional key. Certain keys feature the "switchblade design" where the shank is hidden inside the fob when the key is not being used. They are more difficult to cut and can cost up to hundreds of dollars per key, based on the vehicle's make and model.
These keys are more secure and convenient but they are more prone to malfunction. The battery is the first thing to examine if your key ceases to function. If it's low, replacing the battery should fix the problem. If this doesn't work, it may be an electrical issue and you should contact an expert locksmith or the dealership for assistance.
Remote Start
The remote start feature in the majority of newer car key fobs has established them as a staple of modern car ownership. If you lose yours or it breaks, replacing the key fob is costly and time-consuming. There are a few money-saving options, but it's usually recommended to use an auto dealer or a professional locksmith.
Certain vehicles go one step further than key fobs by using smartphone apps to unlock doors and start engines. Some of these can even be used in conjunction with a fob that acts as a backup in the event that a key isn't present. Check with the manufacturer of your car to determine if an app like this is available for your specific model.
Key Fob Costs
Fobs are a combination of a remote control with a physical metal lock key. They can lock and unlock the vehicle, open the windows, hatch or trunk and in some instances start the engine. The cost of replacing a new keyfob will depend on your car's model and if it comes with advanced features such as push-button start or rolling code encryption to stop theft.
Kelley Blue Book contacted dealerships to ask what the cost would be to replace the key fobs on popular cars and SUVs. Dealerships offered prices ranging from about $50 to more than $400 for replacement fobs as well as the mechanical key that comes with them. The most expensive fobs are for European automobiles that have advanced security features that only the manufacturer is able to program.
It may be possible to revive your device if it's not working due to an unresponsive battery. The coins-shaped batteries can be found at hardware stores or big-box retailers as well as on the internet for around $10 each. Your owner's manual or YouTube videos may describe how to change them yourself if you're familiar with the process.
If you have an extra fob, you will be able to drive your vehicle while a locksmith or the dealership repairs the damaged one. If you're still covered by warranty, you might be able to purchase an alternative key fob or have your auto club membership pay for some of the costs.
Security
Key fobs not only unlock and start your vehicle with a click, but they also enhance the security of your vehicle by using advanced encryption technology. Each time you press the button on your key fob, it transmits a specific code to your car that only it can discern. Once your car is able to recognize the code it will follow the command you have given it, like locking doors or turning on the engine. This will stop the entry of unauthorized persons into your vehicle, and ensure that you and your passengers are secure from theft.
Other helpful features that come with most modern key fobs include remote engine start, which is great for cold mornings when you want to warm up your car before driving it. Additionally, some fobs will activate your car's horn as well as lights if you forget to lock your keys inside. And if you're in a rush to leave your vehicle fob buttons can assist you in remotely opening your windows.
These safety and convenience features are great however the technology behind them is complicated. It is recommended to leave the repair and replacement of fobs to a professional. Locksmiths have the tools and expertise necessary to program your new fob properly and ensure it functions flawlessly. They'll also provide fast and inexpensive service that's usually cheaper than dealership services.
If your key fob is malfunctioning, it may just need a fresh battery. Most key fobs are equipped with coin-shaped batteries, which are easy to replace. They are available at hardware stores, big-box retailers, and many electronic stores. Follow key fob replacement for car in the owner's manual to determine the correct battery type and replacement instructions.
Other issues that are common to key fobs, besides replacing the battery, include signal interference. This can happen when there are strong radio or electronic signals in the area. You can sometimes troubleshoot this issue by moving closer to your car or reprogramming the fob. Contact a professional for more complex issues. Lowcountry Ace is a great option. They offer fast inexpensive, reliable, and professional car fob replacement and repair.