Car Key Fob Repairs

Key fobs today can do much more than unlock and start vehicles. But that extra complexity can add up to costly repairs in the event that one of them malfunctions.

It's a good idea to know that a majority of fobs are powered by flat watch-style batteries which can be easily replaced at home. You may even find that a reset can get yours working again.

Battery Replacement

A dead battery is the most frequent cause of a key fob that isn't working. This is a simple fix, and it's worth a try before you go spending money on a new key fob. You can buy a new button cell battery at a local auto part store or hardware retailer in the event that you already have one. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) for specific instructions on how to open and replace the battery in your fob.

You'll need to gently pry off the sides of many fobs in order to access the battery. You'll need a small, flat-bladed screwdriver or another tool with a thin blade. You can insert your tool into a slot on the bottom of the key fob. It is also advisable to look for small pieces that may fall off while working.

Once you have the new battery, insert it in the same manner that you removed the old one. The positive (+) side should be facing the buttons, while the opposite side is facing (-), the markings on the compartment for the battery.

Check the fob to determine whether it is working by pressing the button. If it doesn't work, there could be a problem with your car that requires a professional to repair or replace.

Certain key fobs can be difficult to open, and the contacts may be brittle and easily corroded. In these situations you should consult a specialist in your car or a dealer could be the best option. When replacing a battery, be patient and follow your owner's manual. You may be able to locate an identical battery at a big-box store or discounter, however, make sure you check the owner's manual to ensure it's compatible with your car.

Replacing the Internal Key

Most key fobs contain an actual mechanical key, but it's hidden inside the fob to prevent thieves. If the battery inside the fob goes out and the key is discarded, a blank one is left behind and can be used to unlock doors and trunks. In some instances, this key can even start certain cars. Most people aren't aware of this, but they can save themselves from a trip to the dealer by simply replacing the fob battery. The flat watch-style battery is used in the majority of modern fobs. These batteries are easily located at auto parts stores and hardware stores. Using the correct type of battery is essential however. A bad battery can damage the electronic circuitry and cause the fob to fail sooner.

If you replace the battery and discover that the problem persists, it could be a sign that something else is wrong with your vehicle. Review the owner's manual of your vehicle to determine if you have a reset procedure that can bring the fob back to factory-setup. If this isn't working, you'll need to visit a dealership or an independent shop that specializes in vehicle-security systems and key fob programming.

Fobs can also malfunction because of faulty transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and they transmit signals that allow you to unlock and keys start your car using the fob. You may need to get closer to the car in order to make it work.

It might be required for a professional to open the case of the fob to replace the transmitter. A simple screwdriver is usually enough to work, however certain fobs require a specific tool or a special piece of equipment which can only be found at a dealership. It's best to have a certified mechanic perform this task so you don't damage the fob or injure yourself.

Reprogramming the Key

A key fob that is not working may simply need a new battery. These batteries are easily found in both pharmacy and home improvement stores and are affordable. This is a great method to start before you purchase an entirely new key fob.

Alternatively, you may be able to program the fob by following a few basic steps. The procedure varies for different vehicle manufacturers, so it is important to refer to the owner's manual and study the specifics of your particular model. For example, one key fob may require that the ignition be turned on while reprogramming it. Another may require the key to be removed and inserted repeatedly.

The general process is simple. First, make sure that the new battery is in place. Close all doors, except the driver's door. This will ensure that the new key fob communicates with the vehicle in a proper manner. Put the old key in the ignition and turn it ON but don't start the engine. Press the lock button while aiming the fob towards the transmission receiver. This is typically located on the front above the mirror. The key will inform the vehicle within a short period of time that it is being programmed. This can be done by turning the door locks or emitting an audible chime. This is a challenging procedure, so pay attention to the timing and don't press too hard the button.

If the key fob won't work after reprogramming it, try replacing the batteries. If the problem persists then a visit to your dealer for your car or locksmiths should be considered. A professional will have all the tools and equipment required to reprogram your car fob or design a new one if necessary.

Genesky says he's able to program newer fobs between $200 and $250, depending on the model of vehicle. However, he's had the need to turn away customers with European models due to the fact that he doesn't have the expensive equipment required. The majority of aftermarket fobs can be programmed, but you should always consult your local dealer to determine the cost.

How do I get a new fob

If your key fob is simply damaged beyond repair, you could need to get a new one. Depending on your vehicle's make and model, an auto locksmith or a dealership might be able to assist. The dealership will likely be the most expensive option for a fob replacement however, they'll have the necessary tools and software to program your car correctly. For a more affordable solution, a variety of locksmiths can offer you a brand-new car key fob at a lower cost.

It is a good thing to try to reset the fob you have before you make the decision to purchase an entirely new one. The owner's manual should outline the correct procedure for reset. It is typically the result of a series of button presses that restores the factory programming.

It's also a good idea to read your owner's manual and warranty information before you decide where to go for an replacement fob for your key. If your vehicle's warranty is still in effect or you have an auto club or car insurance policy that covers bumper to bumper you could qualify for a reimbursement of the cost of replacing the fob.

Finding the right where to purchase the fob you need can be difficult. It is possible to visit the dealer to get this service if you have a newer car and are looking to feel secure knowing that your key fobs are functioning correctly. If you're looking for a cheaper alternative, it's possible to find a locksmith who will provide the same service at an affordable cost.

A locksmith professional is a good option if you're not comfortable doing this kind of work. They are trained and equipped to repair or replace all kinds of car key fobs and often they can complete the task quickly. A locksmith is also able to visit your office or home which is convenient for a lot of people. They can even cut and program keys on the spot in case you've lost keys, which is ideal for those who prefer not to leave their cars in the dark.