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5 Laws Anyone Working In Car Key Fob Repair Should Be Aware Of
Car Key Fob Repairs

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

It's important to know that the majority of fobs are powered by flat watch-style batteries that can be replaced at home. You may find that a simple reset will make your fob work again.

Battery Replacement

The most frequent reason why a key fob stops working is due to an inoperative battery. It's a simple repair, and is worth trying before you go spending money on a new key fob. Take your car to an auto parts store or a hardware retailer that stocks button cells and choose the replacement. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) to find specific instructions on how to open and replace the battery in your fob.


Most fobs come with two halves that snap togetherYou'll need to pull the sides apart to access the battery. You'll usually need a small screwdriver or a different tool equipped with a thin, flat blade. You can wedge your tool into a slot on the bottom of the key fob. You may also want to keep an eye out for tiny pieces that may come loose while you work.

Insert the new battery in the same manner as you removed the previous one. The positive (+) side should be facing the buttons and the negative (-), the markings on the battery compartment.

Test the fob to see whether it is working by pressing a button. If it doesn't work, there might be a problem with your vehicle that needs to be fixed or replaced by a professional.

Certain key fobs are difficult to open and the contacts could be fragile and easily corrosion-prone. In these situations an expert in the field or a dealer could be your best option. If you need to replace batteries, you should be very gentle and follow the instructions specifically in the owner's manual. You may be able find the same battery at a big-box retailer or discounter, but make sure you read your owner's guide to ensure it is compatible with your vehicle.

Replacing the Internal Key

To protect against theft, the majority of key fobs have an electronic key inside. When the battery in the fob goes out it will leave a blank key left behind that can be used to open trunks and doors. In certain cases the key could even start certain cars. Most people aren't aware of this however, they can save themselves a trip to the dealership by simply replacing the fob's battery. Most modern fobs have flat watches-style batteries that are easy to find at hardware stores and auto parts shops. It is crucial to choose the correct type of battery. A wrong type of battery can harm the electronic circuitry, causing the fob to fail much earlier.

If the problem persists after you replace the battery, it could be an indication that something else is going on in your vehicle. Review the owner's manual of your vehicle to determine if there's a reset procedure that can bring the fob back to factory-setup. If that doesn't help, you'll need to go to a dealership or an independent shop that is specialized in vehicle security systems and fob programming.

Fobs can also fail because of faulty transmitter receivers. They are typically placed on the dashboard or near the steering wheel, and they transmit signals that allow you to unlock and start your car with the fob. If you notice that you're required to move closer and closer to your car in order to make it work, there's a great possibility that the transmitter is not working.

It could be required for a professional to open the case of the fob in order to replace the transmitter. A simple screwdriver can usually do the job however some fobs come with complicated release mechanisms that require a special tool or specialized equipment available only at a dealership. This task should be done by a certified mechanic in order to avoid damaging the fob and yourself.

Reprogramming the Key

A key fob that is not working could just require a new battery. They are easily available in pharmacy and home improvement stores and are cheap. This is a good option to begin before purchasing the new key fob.

You may also be able to re-program the fob by following a few basic steps. This process varies between vehicle makes, so it's important to refer to the owner's manual and study the specifics of the model you own. One key fob might require the ignition to be switched on when programming. Another key might require the key to be inserted and removed several times.

The general process is simple. First, make sure the new battery is securely in place. Close all doors, with the exception of the driver's door. This will ensure that the new key fob can communicate with the vehicle correctly. Then, place the old key back in the ignition and switch it to the ON position, but do not start the engine. Next, press the lock button on the fob, while looking at the transmission receiver, which is usually situated on the front of the car above the mirror. The key will notify the vehicle within a brief amount of time that it's being programmed. This can be accomplished by turning off the door locks, or emitting an audible chime. This is a difficult procedure, so pay attention to the timing and avoid pressing too hard the button.

If the key fob does not work try reprogramming it using new batteries. If the issue is still there, you might want to visit your local dealer or locksmith. A professional locksmith will have the tools and equipment needed to reprogram your car fob, or even create a brand new one if needed.

Genesky claims he is able to program newer fobs ranging from $200 and $250, based on the model of vehicle. But he's had to refuse customers with European models due to the fact that they don't have the costly equipment they require. Most aftermarket fobs can be programmed, but you should always consult your local dealer to determine the cost.

How to get a new fob

If your key fob is simply beyond repair, you may need to get an entirely new one. Based on the make and model, the dealer or an auto locksmith might be able to help. The dealership is likely to be the most expensive option for a replacement fob, however, it will also have the tools and software necessary to program your car correctly. If you're looking for a cheaper solution, a variety of locksmiths can provide you with new car keys for a much more reasonable price.

Before you rush to get a new key fob, it is an excellent idea to try resetting your current device. The owner's manual should provide the correct reset procedure. This is usually an orderly press which restores the factory settings.

It is also recommended to check the owner's manual and warranty information to determine whether you are eligible for a replacement key fob. If your vehicle's warranty is still in effect or you have an auto club or insurance policy that covers bumper to bumper you could be eligible to receive a reimbursement for the cost of a replacement fob.

Finding Recommended Web page where to purchase a fob can be difficult. If you have a relatively new vehicle and you want the security with knowing that your keys fobs are in good working condition, you might be better off visiting the dealership to get this service. If you're looking for a more affordable option it is possible to find a locksmith independent who can provide the same service for a significantly lower price.

If you're not comfortable doing this type of work yourself, a professional locksmith may be a good option. They are equipped and trained to replace or reprogram keys for cars of all types, and can do so quickly. Additionally, locksmiths is often able to come to your office or home to complete the task, which can be very convenient for some people. They can cut keys and program them on site if you've lost them. This is perfect for those who don't want to leave their vehicle in the garage.

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