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The 15 Things Your Boss Wished You Knew About Car Key Fob Repair
Car Key Fob Repairs

Key fobs today do much more than just unlock and start vehicles. This added complexity can cause costly repair costs in the event that it malfunctions.

The good news is that most fobs use flat watch-style batteries that are simple to replace at home. It is possible that a simple reset will make your fob work again.

try what she says is the most frequent cause of the fob's key not working. It's easy to solve and is worth a try before you spend money on an alternative fob. You can buy a new button cell battery at your local auto parts store or hardware retailer If you own one. You can also check the owner's manual (or in the case that you don't have one, YouTube is full of videos from people who show you how to do it) for specific instructions for opening and replacing the battery in your particular type of fob.

You'll have to gently pull apart the sides of most fobs in order to access the battery. You'll need a small, flat-bladed screwdriver, or another tool with a blade that is thin. You can insert your tool into a notch at the bottom of the key fob. It is also advisable to look for small pieces that may come loose while you work.

Once you have the new battery, insert it the same way that you removed the previous one. The positive (+) side should be facing the buttons and the reverse (-) the marks on the compartment for the battery.

Check the fob to determine whether it functions by pressing the button. If it doesn't work, there might be a problem with your car that needs to be fixed or replaced by a professional.

Certain key fobs are difficult to open and their contacts may be fragile and easily corrosion-prone. In these situations, a car specialist or a dealer could be the best option. If you're looking to replace batteries, you should be very gentle and adhere to the instructions specifically in your owner's manual. You may be able to locate an identical battery at a big-box store or discounter, but be sure you check the owner's manual to ensure it's compatible with your vehicle.

Replace the internal key

To prevent theft, most key fobs are equipped with an electronic key inside. When the fob battery dies, it leaves behind a blank internal key which can open doors and trunks (and in some cases start certain vehicles). Most people don't know this, but they can save having to go to the dealership by simply replacing the fob battery. The flat watch-style batteries are used in most modern fobs. They can be found at hardware and auto parts stores. Using the correct type of battery is essential, however. A wrong type of battery can harm the electronic circuitry, which can cause the fob to fail sooner.

If the issue persists after replacing the battery, it may be a sign that there is something else wrong in your vehicle. Review the owner's manual of your vehicle to determine if you have a reset procedure that will restore the fob's the factory program. If this doesn't work, you'll have visit a dealership or an independent shop that specializes in vehicle-security systems and key fob programming.

Fobs can also malfunction due to faulty transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and transmit signals that allow you to unlock and start your car using the fob. If you notice that you're required to move closer and closer to your car to be able to make it work, there's a good possibility that the transmitter is not working.

It could be necessary for a professional to remove the case of the fob in order to replace the transmitter. A simple screwdriver will usually work, however certain fobs require a specific tool or a special piece of equipment that can only be found at a dealership. It's a good idea to have a certified mechanic do this job so that you don't break the fob or hurt yourself.

Reprogramming the Key

Most of the time, a key fob that isn't working simply needs a fresh battery. Since these batteries are inexpensive and readily available at pharmacies and home improvement stores, this is an excellent first step prior to buying the purchase of a new car key fob.

You can also change the programming of your key fob by yourself by following some basic steps. This process varies between vehicle manufacturers, so it is important to read the owner's manual and study the specifics of the model you own. One key fob could require that the ignition switch be turned on while changing the program. A key fob might require the key to be inserted multiple times.

The basic procedure is simple. Make sure the battery is securely in place. Then, get into the driver's seat, and close all doors, with the exception of the driver's side door. This will ensure that the new fob is communicating with the vehicle correctly. Insert the old key into the ignition, then turn it ON however, do not start the engine. Then press the lock button on the fob while looking at the transmission receiver, which is usually situated on the front of the vehicle above the mirror. Within a brief time, the key will indicate to the vehicle that it's been programmed by cycling the doors' locks or emitting an emitted sound. This procedure can be difficult, so it's important to be aware of the timing and don't over-press the key button.

If the key fob doesn't work after reprogramming it, try using a new battery. If the problem persists you might want to visit your local dealer or locksmith. A professional will have all the tools and equipment to reprogram your car's fob or create a new one if necessary.

Genesky claims he is able to program newer fobs between $200 and $250, depending on the vehicle. However, he's had the need to turn down customers who have European models because there's no equipment they require. A majority of the aftermarket fobs are programmed, but always consult your local car dealer to determine the cost.

How to get a new fob

If your key fob cannot be repaired, you might need to buy another one. Depending on the model and make, an auto locksmith or a dealership may be able to help. The dealership is likely to be the most expensive choice for a replacement fob, however, it will also have the tools and software needed to program your car correctly. If you are looking for a less expensive solution, a variety of locksmiths can provide you with a brand-new car key fob at a lower price.

It's a good idea to attempt to reset your current fob before you decide to buy an entirely new one. The owner's manual will outline the proper reset procedure which is typically a series of button pushes that reset the original programming.


It's also a good idea to review your owner's manual as well as warranty information prior to deciding where to go for the replacement of your key fob. If your car's warranty in good standing or you have an auto club or insurance policy that covers bumper-to-bumper you could qualify for a reimbursement on the cost of replacing the fob.

Finding a fob is simple enough however finding the best location to do it isn't easy. You might want to go to the dealer to get this service if you have a newer car and want peace of mind knowing that your key fobs work properly. If you're seeking a less expensive alternative, it is possible to find a locksmith that will offer the same service for a lower price.

A locksmith professional is a good option If you're not confident doing this type of work. They are trained and equipped to repair or replace all kinds of car key fobs and often they can do it quickly. Locksmiths can also visit your house or office, which is convenient for many. They can even cut and program keys on the spot when you've lost keys, which is ideal for those who prefer not to leave their cars unattended.

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