The 10 Scariest Things About Car Key Fob Repair

Car Key Fob keyless entry repairs

Today's key fobs are more than just a way to unlock and start vehicles. This added complexity could lead to expensive repair bills in the event that it malfunctions.

It's good to know that most fobs are powered by flat-watch-style batteries which can be easily replaced at home. You may even find that a reset will bring it back to life.

Battery Replacement

The most frequent reason that a key fob doesn't work is because of a dead battery. It's a simple fix, and it's worth trying before you decide to spend money on a new fob. You can purchase an additional button cell battery at your local auto parts store or hardware retailer in the event that you already have one. You can also consult the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to open and replace the battery inside your fob.

You'll have to gently pull off the sides of many fobs to access the battery. You'll usually need a small screwdriver or another tool with a thin, flat blade. You can wedge your tool into a notch on the bottom of the key car repair fob. You might also want to watch out for tiny pieces that may come loose as you work.

Install the new battery in the same way you removed the previous one. Make sure that the positive (+) side is facing upwards toward the buttons, and that the negative (-) side of the battery is aligned correctly with the markings in the battery compartment of your fob.

Check the fob to determine whether it functions by pressing the button. If it doesn't, you might have a problem with your car that requires a specialist to repair or replace.

Certain key fobs can be difficult to open and their contacts may be brittle and easily corrosion-prone. In these situations an expert in the field or dealer may be the best choice. If you're looking to replace batteries, you should be very gentle and follow the specific instructions in the owner's manual. You might be able find a similar battery at a discounter store or a big-box retailer, but you'll need to check the owner's manual to be sure that it matches your car.

Replacing the Internal Key

To guard against theft, many key fobs are equipped with an internal mechanical key that is hidden within. If the battery of the fob fails it leaves an internal key blank that is able to unlock trunks and doors (and in some cases, even start certain cars). Most people don't know this, but they can avoid a trip to the dealership by simply replacing the fob's battery. The flat watch-style batteries are used in the majority of modern fobs. These batteries can be located at hardware and auto parts stores. It is essential to choose the right type of battery. A bad battery can cause damage to the circuitry, causing the fob to fail much earlier.

If the problem persists even after you have replaced the battery, it may be a sign that something else is wrong in your vehicle. Review the owner's manual of your vehicle to determine if there's a reset procedure that will restore the fob to factory-setup. If this fails, you'll need to visit a dealership or an independent shop that specializes in security systems for vehicles and key fob programming.

Fobs can also malfunction because of faulty transmitter receivers. They are usually found close to the steering wheel or on the dashboard. They transmit signals to allow you to unlock your car and begin it using the fob. If you notice that you're being required to get closer and closer to your vehicle in order to make it work, there's a great possibility that the transmitter is not working.

It might be required for a professional to remove the case of the fob to replace the transmitter. A simple screwdriver can usually do the job however some fobs come with complicated release mechanisms that require a specialized tool or equipment that is available only at a dealer. It is a good idea to have a qualified mechanic perform this task so you don't accidentally break the fob or injure yourself.

Reprogramming the Key

A key fob that's not working might just need an upgrade in battery. These batteries are easily found in home improvement and pharmacy stores and are cheap. This is a good option to begin before purchasing a new 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 your particular model. For instance the key fob might require that the ignition be switched on while reprogramming the key. One key fob may require the key to be inserted several times.

The general procedure is very easy. First, make sure the new battery is firmly in place. Then, get into the driver's seat and close all doors EXCEPT for the driver's side door. This will ensure the new key is communicating with the vehicle properly. Put the old key in the ignition, then turn it ON, but don't start the engine. Press the lock button while aiming the fob towards the transmission receiver. It is usually located on the left side, just above the mirror. The key will notify the vehicle within a brief amount of time that it is being programmed. This can be done by turning off the door locks or emitting an audible chime. This process can be tricky, so it's important to be aware of the timing and don't over-press the key button.

If the key fob doesn't function after reprogramming, you can try using new batteries. If the issue is still there, you might want to visit your local locksmith or dealer. A professional will have the tools and equipment necessary to re-program your car's fob or clone a new key if it's needed.

Genesky claims he is able to program newer fobs between $200 and $250, based on the model of vehicle. However, he's had the need to turn down customers who have European models because he doesn't have the expensive equipment they require. Luckily, the majority of aftermarket fobs can be programmed, but it's always recommended to consult the dealer of your choice first to determine what the cost is.

Finding a New Fob

If your key fob cannot be fixed, you could have to purchase an entirely new one. Based on the make and model, the dealership or an auto locksmith might be able to assist. The dealership is likely to be the most expensive option for a fob replacement However, they'll have all the required tools and software to programme your vehicle properly. Many locksmiths in independent shops provide a new car key fob at a much lower price.

It is a good thing to try to reset the fob you have before you rush out to buy another one. Your owner's manual should outline the proper reset procedure that is typically the pushing of a button that reset the original programming.

You should also look over your owner's guide and warranty information to see if you can get an additional fob for your key. If your car is under warranty or you have a car insurance policy or auto club membership that includes bumper-to-bumper insurance, you might be able to receive some reimbursement for the cost of an entirely new fob.

Getting a fob is easy enough, but finding the right place to have it done can be tricky. It is possible to visit the dealer for this service if you have a newer vehicle and you want peace of mind knowing that your key fobs are functioning properly. 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 at a much lower cost.

If you're not comfortable doing this type of work on your own, a professional locksmith can be a great option. They're trained and equipped to change or reprogram car key button repair key fobs of all kinds and do it quickly. In addition, a locksmith is often able to come to your home or office to complete the task, which can be very useful for certain people. They can even cut and program keys repair on the spot if you have lost keys, which is great for those who don't like to leave their cars in the dark.