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What is Car Key Fob?

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Do you have a small plastic controller that came with your key? Does your key have a large plastic component attached to the key itself? Even though it can look like a large keychain, it is actually much more than that. These are known as remote-entry key fob devices and they are very important for the entry of your vehicle. So exactly what is car keyfob devices and why are they important? Here’s what you need to know:

What is Car Key Fob?A key fob is one of the main components of a vehicle’s keyless entry system. With a car keyfob, you are able to lock or unlock your car or truck by pushing a single button. They are small and typically able to fit in your hand allowing them to be connected to a key ring or easily carried around in your pocket. Depending on what type of make and model of vehicle you have, your car keyfob may be attached to the key itself.

What is car keyfob used for?

The main use of a key fob device is to allow for entry into your vehicle without having to place your key into the lock. Beyond simply locking or unlocking a vehicle, however, key fobs can also be used for a wide range of other wireless and keyless tasks. Some keyfobs are able to:

  • Open up the trunk of a vehicle.
  • Start the car’s engine remotely.
  • Turn on or off the car alarm.
  • Activate a vehicle’s security system.


How Does A Key Fob Work?

Even though they look like relatively simple devices, your car’s key fob actually includes very advanced technology. Each vehicle manufacturer may adopt slight changes on their specific car key fob, but the general principle works the same.

Inside the actual plastic case itself is a microchip circuit board. This chip is able to transmit radio waves to send a very specific code to your vehicle’s onboard computer unit. When you hit a button on the key fob, the code is transmitted to your computer for verification. Your car will verify the code sent via radio transmission and if it matches the code on the car, the operation will carry out.

What is car keyfob replacement?

If your vehicle supports key fob technology and you lose your key fob device, it can be replaced by a certified technician. While it may not be difficult to find a replacement fob itself, the important issue with replacing or repairing a wireless entry system is having the codes programmed correctly. If you are not sure how to program a key fob yourself it is advised to use a locksmith or similar certified professional.

In addition to key fobs being able to be replaced, vehicles can also be reprogrammed to have a different code between devices. This is recommended if you lose one of your key fob devices and are worried that a thief could find your wireless entry device and have access to your car. With key fob reprogramming, a technician will change the codes on both your key fobs and your car’s computer unit to make sure your old key fobs no longer work.




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Cadillac, Daihatsu, GMC, Isuzu, Iveco, Nissan, Scion, Saturn, Acura, Volkswagen, Plymouth, Subaru, International, Oldsmobile, Mazda, RVs, Deawoo, Infiniti, Toyota, Pontiac, Dodge, Mitsubishi, Ford, Buick, Lincoln, Suzuki, Jeep, Truck, Kia, Van, GEO, Hyundai, Honda, Chrysler, SUV, Mercury, Lexus, Kenworth, Hummer, Mack, Chevrolet Cadillac, Daihatsu, GMC, Isuzu, Iveco, Nissan, Scion, Saturn, Acura, Volkswagen, Plymouth, Subaru, International, Oldsmobile, Mazda, RVs, Deawoo, Infiniti, Toyota, Pontiac, Dodge, Mitsubishi, Ford, Buick, Lincoln, Suzuki, Jeep, Truck, Kia, Van, GEO, Hyundai, Honda, Chrysler, SUV, Mercury, Lexus, Kenworth, Hummer, Mack, Chevrolet

About Us

  • AffordableKeyReplacement.Com afford extremely trained, swift and economical mobile car key replacement assistance in Houston Texas and nearby area by appointing most reliable roadside assistance locksmiths personals. If you sealed your keys in your trunk, lost the keys to your truck, jammed you ignition, door or trunk lock cylinder in the middle of the highway, our car key generating experts are on a duty call around the clock for any emergency lockout or key made situation and can be with you anywhere in Houston and sorrounding area to copy your keyless entry and remotes for almost any kind of American, Asian, Japanes, German or European vehicles. Only our locksmiths can offer you industry first class car opening and key reproduction services on the spot at such affordable rates. The gosl of AffordableKeyReplacement is to never compromise on the quality of our man labor and parts attempting to reduce costs. We will always validate that you will get the premium service, by a skilful and dedicated technician at a genuine and minimal rates possible.

Coverage Area

  • We’re utterly enthusiastic to our customer comfort in Piney Point Village, Hunters Creek Village, Spring Valley or Southside Place, introducing in each one of our employees an attitude that puts the population and groups in East End, Clinton Park, Northwest Crossing, Meyerland, Acres Homes comes first in everything we do. As a result of that commitment, many consider us the key-smith to count on for their auto emergency needs. If you wish a car key outplacement near Atascocita Country Club, The Art Institute of Houston, Glenbrook Park Golf Course, Englewood Yards or Northline Shopping Center, we can reproduce a key, recompute engine control unit or efficiently open car doors or trunks. Our AffordableKeyReplacement professional locksmith can arrive on the scene within around 20 minutes of your call.

Licensed Locksmith

  • Believe it or not, but while other areas of the security services (e.g. door staff, and firefighting, access control or even keyholding companies) are governed and licensed, the industry of automotive locksmithing is not regulated in any way by the USA government. This means that any estaplishment or a person can trade as a lock-smith irrespective of their background, competence and even motive. For this reason AffordableKeyReplacement is using private licensing scheme for approved companies who met 3 key criteria; Harris county criminal records bureau’s check, regular inspection checking audit trails for quality purposes and employing qualified locksmiths.
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What is Car Key Fob?
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