11 Ways To Completely Sabotage Your Car Key Fob Repair

· 6 min read
11 Ways To Completely Sabotage Your Car Key Fob Repair

Car Key Fob Repairs

Key fobs today are more than just a way to unlock and start vehicles. This added complexity can cause costly repair costs when it fails.

The positive side is that many 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

A dead battery is the most common reason for a key fob not working. It's a simple repair, and is worth trying before you go spending money on a new fob. Take your car to a local auto parts store or hardware retailer that carries button cell batteries and purchase an alternative. You can also consult the owner's manual (or in the event that you don't have one, YouTube is full of videos from people explaining how to do it) for specific instructions for opening and replacing the battery in your particular type of fob.

You'll need to gently pry apart the sides of most fobs to reach the battery. You'll need a small flat-bladed screwdriver, or a different tool with a small blade. It may be helpful to look for a notch along the bottom of the fob that you can use to wedge your tool between. You might also want to keep an eye out for small pieces that could be loosened while working.

Insert the new battery in the same way you removed the old one. The positive (+) side should be facing the buttons, while the opposite side is facing (-) the marks on the battery compartment.


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

Certain key fobs can be difficult to open and the contacts could be fragile and easily corrosion-prone. In these cases, a car specialist or the dealer will likely be the best option. If you're in need of replacing a battery, try to be very gentle and follow the instructions specifically in your owner's manual. You might be able to find a battery similar in a big-box store or discounter, however, make sure you read the owner's manual to ensure that it's compatible with your vehicle.

Replacing the Internal Key

To prevent theft, most key fobs come with a mechanical key hidden inside. When the battery in the fob fails, a blank key is left behind that can be used to open trunks and doors. In some instances it is possible to start certain cars. Most people aren't aware of this however, they can save from a trip to the dealer by simply replacing the fob battery. The majority of modern fobs utilize flat watches-style batteries that are readily available at auto parts stores and hardware shops. It is important to use the right type of battery. A bad battery can damage the electronic circuitry, causing the fob to fail much earlier.

If the problem persists after you replace the battery, it could be a sign that there is something else going on with your vehicle. Go through the owner's manual to see if there's a reset procedure that will bring the fob back to factory-setup. If that doesn't help you'll have to visit a dealership 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 placed on the dashboard or near the steering wheel, and they send signals that allow you to unlock and start your car using the fob.  car key remote repair near me  may have to move closer to the car to enable it.

It could be required for a professional to remove the case of the fob in order to replace the transmitter. A simple screwdriver is usually enough to do the trick, but some fobs require a specialized tool or a special piece of equipment that can only be purchased at a dealership. It is a good idea to have a certified mechanic perform this task so you don't accidentally break the fob or injure yourself.

Reprogramming the Key

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

Alternatively, you may be able to program the fob by following some basic steps. This procedure can differ between vehicles, so it is recommended to read the owner's manual and research the model you have. For example one key fob could require the ignition to be switched on while reprogramming the key. Another might need the key to be inserted and removed repeatedly.

The general process is simple. First, ensure that the new battery is firmly in place. Close all doors, except the driver's door. This will ensure that the new fob is communicating with the vehicle in a correct manner. Place the old key in the ignition, turn it on, but don't start the engine. Next press the lock button on the fob while making sure to point it towards the transmission receiver, which is typically located on the front of the car above the mirror. The key will inform the vehicle within a short amount of time that it is being programmed. This can be accomplished by cycling the door locks, or emitting an audible chime. This is a challenging process, so pay attention to the timing and don't press too hard the button.

If the key fob won't work after reprogramming it, try using new batteries. If the issue persists you should visit your dealer for your car or a locksmith should be considered. A professional will have all the tools and equipment needed to reprogram the car fob or design a new one if needed.

Genesky says he's able to program newer fobs for $200-$250, depending on the car. Genesky has experienced European models rejected due to the fact that he lacks the expensive equipment required. A majority of the aftermarket fobs are programmed, but you should always inquire with your local car dealer to find out the price.

A New Fob

If your key fob is simply damaged beyond repair, you could need to get an alternative. Based on the make and model, an auto locksmith or a dealership might be able to assist. The dealership is likely to be the most expensive choice for a replacement fob, but it also has the tools and software required to program your car properly. Many independent locksmiths provide a new car key fob at an affordable price.

Before you purchase an entirely new device, it is a good idea to try resetting your current device. The owner's manual will outline the correct procedure for reset which is typically a series of button pushes which restores the original programming.

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

Finding a fob is simple enough however, finding the right place to have it done isn't easy. It is possible to visit the dealer for this service if are driving a brand new car and want to be confident that your keyfobs are working properly. If you're looking for a more affordable alternative, it is possible to find a locksmith who will provide the same service at a lower price.

If you aren't comfortable handling this type of work yourself, a professional locksmith may be a good option. They are certified and equipped to replace or reprogram most types of car key fobs, and often they can complete the task quickly. Additionally, locksmiths is often able to come to your workplace or home to complete the task which is useful for certain people. They can cut keys and program them on the spot in case you've lost keys. This is perfect for those who do not want to leave their car unattended.