Car Key Fob keyless entry repairs

Key fobs of today do a lot more than unlock and start cars. This extra complexity can cause costly repair costs when it fails.

It's good to know that most fobs are powered by flat watch-style batteries, that can be replaced at home. It is possible that a simple reset will bring your fob back to life.

Battery Replacement

The most frequent reason why that a key fob doesn't work is because of an inoperative battery. This is a simple repair, and is worth a try before you go spending money on a new key fob. You can pick up the new button cell 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) to get specific instructions on how to replace and open the battery inside your fob.

Most fobs have two halves that snap togetherYou'll need to pry the sides apart to get to the battery. You'll need a small flat-bladed screwdriver, or another tool with a blade that is thin. You can wedge your tool into a notch on the bottom of the key fob. You might also want to be on the lookout for small pieces that could come loose while 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 marks inside the battery compartment of your fob.

Test the fob to see whether it is working by pressing the 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 their contacts could be fragile and easily damaged. In these cases the best solution is to talk to a specialist or dealer. If you need to replace the battery, make sure to be very gentle and adhere to the instructions specifically in your 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 refer to your owner's manual to ensure that it's the right one for your vehicle.

Replace the internal key

To prevent theft, most key repair car fobs come with 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 open doors and trunks. In certain cases the key could even start certain vehicles. Many people don't realize this, but they can save having to go to the dealership by simply replacing the fob battery. Most modern fobs use flat watches-style batteries that can be found in hardware stores and auto parts shops. The right kind of battery is essential however. A wrong type of battery can harm the electronic circuitry, which can cause the battery to fail sooner.

If you try replacing the battery, and the issue is still there, it could be an indication that something else is wrong with your car. If you have an owner's guide, check to see if a reset procedure is available to restore the fob's original programming. If this doesn't work, you'll need to visit a dealer or an independent shop that specializes in vehicle-security systems and fob programming.

Fobs can also malfunction due to malfunctioning transmitter receivers. They are typically located near the steering wheel or in the dashboard. They transmit signals to allow you to unlock your vehicle and start it using the fob. You may have to move closer to the car to make it work.

A professional might have to open the case to replace the transmitter. A simple screwdriver will usually get the job done however, some fobs have complex release mechanisms that require a special tool or specialized equipment available only at a dealer. This task must be handled by a qualified mechanic to avoid damaging the fob as well as yourself.

Reprogramming the Key

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

You may also be able to program the fob yourself by following the steps. This procedure can differ between vehicles, so you should read the owner's manual and research the model you have. One key fob might require that the ignition switch be on when programming. One key fob could require the key to be inserted multiple times.

The basic procedure is simple. First, make sure that the new battery is in place. Close all doors, except the driver's door. This will ensure the new fob is communicating with the vehicle properly. Insert the old key into the ignition and turn it ON however, do not start the engine. Next press the lock button on the fob, while looking at the transmission receiver, which is typically situated on the front of the car above the mirror. Within a brief time, the key will indicate to the vehicle that it's being programmed by cycling the doors locks or emitting an emitted sound. This is a challenging procedure, so pay attention to timing and don't over-press the button.

If the key fob does not work after reprogramming it, try replacing the batteries. If the problem persists you should visit your dealer for your car or a locksmith is a good idea. A professional will have all the tools and equipment to reprogram the car fob or create a new one if necessary.

Genesky says he's able to program newer fobs ranging from $200 and $250, based on the vehicle. However, he's had the need to refuse customers with European models due to the fact that they don't have the costly equipment required. A majority of the aftermarket fobs are programmed, but you should always check with your local dealer to determine the price.

Getting a New Fob

If your key fob is simply beyond repair, you might need to purchase a new one. Depending on the make and model, an auto locksmith or dealership may be able help. The dealership will likely be the most expensive option for a fob replacement, but they will also have all the required tools and software needed to program your car correctly. For a more affordable option, a number of independent locksmiths can provide you with an entirely new car key fob for a much more reasonable price.

It is a good thing to try to reset the fob you have before you rush out to buy another one. The owner's manual will outline the proper procedure for reset that is typically the pushing of a button that restores the factory settings.

You should also check the owner's manual and warranty information to see if you can get an alternative fob for your key. If your car is under warranty or you have a car insurance policy or auto club membership that provides bumper-to-bumper coverage, you may be eligible to receive a reimbursement for the cost of the new fob.

Finding the right where to purchase the fob you need can be difficult. If you have a relatively new car and want the security from knowing that your key fobs are in working condition, you may be better off visiting the dealership for this service. If you're looking for an option that is more affordable, it is often possible to find an independent locksmith who can offer the same services for a lower cost.

A professional locksmith is a great option for those who aren't comfortable with this type of work. They are trained and equipped to replace or reprogram keys for cars of all kinds and can 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 also cut and keyless entry repairs program keys on the spot if you've lost them. This is great for those who do not want to leave their vehicle unattended.