The Most Common Mistakes People Make Using Car Key Fob Repair

· 6 min read
The Most Common Mistakes People Make Using Car Key Fob Repair

Car Key Fob Repairs

Key fobs today do a lot more than simply unlock and start vehicles. However, that added complexity can result in costly repairs when one of them fails.

The good news is that the majority of fobs use flat watch-style batteries that are simple to replace at home. It is possible that a simple reset can bring your fob back to life.

Battery Replacement

The most common reason that a key fob doesn't work is because of a dead battery. This is a simple repair, and is worth a try before you decide to spend money on a new fob. Simply drive your car to a local hardware or auto parts retailer that stocks button cell batteries and purchase a replacement. You can also refer to the owner's manual (or in the event that you don't have one, YouTube is full of videos of people who explain how to do it) for specific instructions on opening and replacing the battery in the specific type of fob you have.

Most fobs have two halves that snap togetherYou'll need to pry the sides apart to access the battery. You'll typically need a small screwdriver or another tool with a thin, flat blade. You can put your tool into a notch at the bottom of the key fob. You might also want to watch out for tiny pieces that might break loose while you work.

When you have your new battery, insert it in the same manner that you removed the previous one. Make sure the positive (+) side is facing up towards the buttons and that the negative (-) side of the battery is aligned with the markings inside the battery compartment of your fob.

Test the fob to see whether it is working by pressing the button. If it fails, it could be a problem in your car that needs to be repaired or replaced by a specialist.

Certain key fobs require specific tools to open, and the contacts inside may be delicate and susceptible to corroding. In these instances 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 instructions. You might be able to find the same battery at a big-box store or discounter, but be sure you check your owner's guide to ensure that it's compatible with your car.

Replacing the Internal Key

To prevent theft, most key fobs have an internal mechanical key that is hidden within. If the battery inside the fob goes out, a blank key is left behind, which can be used to unlock doors and trunks. In some cases it is possible to start certain cars. Most people don't know this however they could save themselves having to go to the dealership by simply replacing the fob's battery. Most modern fobs use flat watch-style batteries that are easy to find in hardware stores and auto parts shops.  car key repair service  is essential to choose the right type of battery. A bad battery can cause damage to the circuitry and lead to the fob to fail much earlier.

If you replace the battery, and the issue persists it could be a sign that something else is happening in your vehicle. Go through the owner's manual to see if there's an option to reset the fob and restore the fob to factory programming. If this fails, you'll need go to a dealer or a shop independent that specializes in vehicle-security systems and key fob programming.

Fobs may also fail because of faulty transmitter receivers. These are usually built into the dashboard or near the steering wheel, and transmit signals that allow you to unlock and start your car using the fob. If you're having to get closer and closer to your car to be able to make it work, there's a great chance that the transmitter isn't working.

It may be required for a professional to open the case of the fob to replace the transmitter. A simple screwdriver can usually accomplish the task however, some fobs have complicated release mechanisms that require a specific tool or specialized equipment available only at a dealer. It is a good idea to have a qualified mechanic handle this job to ensure you don't break the fob or injure yourself.

Reprogramming the Key

A key fob that is not functioning simply needs a fresh battery. Because these batteries are cheap and readily available at pharmacies and home improvement stores, this is the ideal first step before investing in an entirely new car key fob.

Alternately, you might be able to program the fob yourself by following a few basic steps. This process can vary between vehicles, so you should refer to the owner's manual and research the model you have. For instance one key fob could require the ignition to be turned on while reprogramming it. Another may require the key to be inserted and removed multiple times.

The process is straightforward. Make sure the battery is securely in place. Close all doors except the driver's door. This will ensure the new fob is communicating with the vehicle in a correct manner. Place the old key in the ignition and turn it on however, do not start the engine. Then press the lock button on the fob while making sure to point it towards the transmission receiver, which is usually located on the front of the car above the mirror. The key will inform the vehicle within a brief amount of time that it is being programmed. This can be done by turning the door locks or by emitting an audible chime. This procedure can be difficult, so it's important to be aware of the timing and to not over-press the key button.

If the key fob doesn't work after reprogramming it, try using new batteries. If the issue isn't resolved then a visit to your dealer for your car or a locksmith is a good idea. A professional will have all the tools and equipment needed to reprogram your car fob, or even create a brand new one, if required.

Genesky says he can usually program newer fobs for around $200 to $250, based on the vehicle. However, he's had the need to refuse customers with European models because they don't have the costly equipment required. Most 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 beyond repair, you might need to purchase an entirely new one. Based on the make and model, a dealership or an auto locksmith may be able to assist. The dealership is likely to be the most expensive choice to replace your fob, but it also has the tools and software required to program your car properly. Numerous locksmiths who are independent offer a brand new car key fob for a much lower price.


It's a good idea to attempt to reset your current fob before you rush out to buy an entirely new one. Your owner's manual should outline the proper procedure for reset, which is usually just the pushing of a button that restores the factory settings.

It is also recommended to check the owner's manual and warranty information to determine whether you can obtain an additional fob for your key. If your car is under warranty, or you have a car-insurance policy or auto club membership with bumper-to-bumper protection, you may be able to receive some reimbursement for the cost of the new fob.

Finding  broken car key repair near me  is simple enough, but finding the right location to get it done can be tricky. You might want to visit the dealer to get this service if you have a newer vehicle and you want to be confident that your key fobs are functioning correctly. If you're looking for an option that is more affordable, it is often possible to find an independent locksmith who can provide the same service for a lower cost.

A locksmith who is professional is a great option If you're not confident doing this type of work. They're trained and equipped to repair or replace keys for cars of all kinds and 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 in case you've lost them, which is ideal for those who don't like to leave their cars in the dark.