How To Program A Key Fob (With Easy & Safe Process)

How To Program a Key Fob

How to program a key fob? Vehicle owners often have this question in their minds when their vehicle key gets reset for some reason. In vehicles, a key fob is a small compact electronic gadget, often resembling a small remote control. The key fob is used to open the doors and trunk of vehicles and is also used as a digital key to start vehicles and activate various electronic systems.

But sometimes the digital key fob needs to be reprogrammed when it is reset because the key fob is not able to lock and unlock the doors when it is reset. Therefore, it needs to be programmed for its efficient functioning. In this article, we will learn about “How to Program the Key Fob” in detail, so that if there is ever a need to program the key fob in your vehicle, you can do it easily.

What Does The Key Fob Do?

​Typically, digital key fobs in vehicles use radio frequency identification or Bluetooth technology to communicate with door locks or devices. Key fobs are a device that enhances security in vehicles, reducing the risk of unauthorized access inside the vehicle.

How To Program A Key Fob

To program the key fob:

  • Step 1: Understand the Key Fob System
  • Step 2: Replace the key fob battery.
  • Step 3: Sit in the driver’s seat.
  • Step 4: Insert and remove the key
  • Step 5: Wait for indicators.
  • Step 6: Press the lock button.
  • Step 7: Program a New Fob
  • Step 8: Test the key fob.
  • Step 9: Exit Programming Mode

Programming the key fob can often vary depending on the make and model of the vehicle, as different manufacturers may have different procedures for programming the key fob. However, some vehicles can follow this procedure to program the key fob and understand it in detail.

Step 1: Understand Key Fob System

Before programming any vehicle key fob, you must identify and understand the key fob system used in your specific vehicle model and whether the key fob is a remote entry or smart key.

Step 2: Replace Key Fob Battery

Before programming any key fob, replace the battery with a new one. Most key fobs stop working or go into reset mode due to battery failure.

Step 3: Sit in The Driver’s Seat

After this, sit in the driver’s seat of the vehicle and close all the doors. Because unless all the doors and trunk of the vehicle are properly closed, you cannot program the key fob properly.

Step 4: Key Insert & Remove

Now you insert the key into the ignition switch and turn it to “On” or “Run” mode without starting the engine. After this, turn off the ignition. Keep in mind that on some vehicles, you may have to remove and insert the key several times to program the key fob. This will connect the vehicle’s safety mode system and the key fob system.

Step 5: Wait For Indicators

If your vehicle’s key fob is in program mode, its system will display indicators such as flashing lights, beeps, or specific signals confirming that the key fob is in program mode.

Step 6: Press Lock Button

You then press and release lock button on the key fob. But remember that this step is usually timed and must be activated within a certain period of time. So you need to press and release it within a specific time frame after turning the ignition key to the “ON” position.

Step 7: Program New Fob

If adding another new key fob, press the button or turn on the ignition and repeat the same process to program it. By following the mentioned process, you will be able to easily program any other new key fob.

Step 8: Test The Key Fob

After the process of programming the key fob, you will need to check that the key fob is working properly. To do this, try using the key fob to lock and unlock the vehicle doors, and check if any other functions of the key fob (such as trunk release or panic alarm) are working properly.

Step 9: Exit Programming Mode

Some vehicles automatically exit programming mode after a certain amount of time. If this is not happening in your vehicle, you may need to manually turn the key back to the “Off” position.

NOTE: If you are uncomfortable programming your vehicle’s key fob, you should contact a qualified vehicle technician or your dealership. Because programming your vehicle key fob without any knowledge or experience may compromise your vehicle’s security system.

How To Get a Replacement Car Key Without The Original?

If the original key fob of your vehicle is lost for some reason and you want to get a replacement car key without the original,

  • So the first thing you need to do is contact your car dealership or a reputed locksmith.
  • Next, you provide them with the make, model, and VIN number of your vehicle.
  • To do this, they may need proof of ownership, such as your registration and identity.
  • Some dealerships or locksmiths offer on-site programming services for electronic keys.
  • If you have a spare key, it may be possible to duplicate it.
  • You will be required to pay the prescribed fee for the replacement key and any programming services.​


Q. Can a key fob lose its programming?

Yes, if one’s fob has a failure, it can lose its programming. Because the key fob remote has contact with the vehicle’s receiver. If the key fob remote becomes contaminated for some reason or its battery becomes weak, the key fob will fail to function normally.

Q. How do I find my key fob code?

In fact, the location of the key fob code may vary depending on the make and model of the vehicle. So you can find your vehicle’s key fob code in the vehicle documentation, in the vehicle manual, on the lock or key label, on the lock housing, or in the glove compartment.

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