11 Ways To Totally Block Your Car Key Fob Repair Car Key Fob Repairs

Key fobs of today can do 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. You may even find that a reset will make your device work again.

Battery Replacement

A dead battery is the most common cause of the fob's key not working. It's a simple solve and is worth a try before you purchase an alternative fob. Simply take your car to a local auto parts store or a hardware retailer that stocks button cells and choose an alternative. You can also refer to your owner's manual (or, if 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 on the particular type of fob.

The majority of fobs have two halves that snap together -- you'll need to gently pull the sides apart to get to the battery. You'll need a small, flat-bladed screwdriver, or a different tool with a thin blade. It may be helpful to look for a notch along the lower edge of the fob that you can place your tool between. You may also want to keep an eye for tiny pieces that could break loose as you work.

Once you have your new battery, place it in the same way that you removed the old one. The positive (+) side should be facing the buttons and the reverse (-), the markings on the compartment for the battery.

Test the fob to see if it works by pushing the button. If it doesn't work, there might be a problem with your vehicle that needs to be repaired or replaced by a specialist.

Certain key fobs can be difficult to open and their contacts may be brittle and easily corrosion-prone. In these instances an expert in the field or the dealer will likely be the best option. When replacing a battery, be gentle and follow your owner's instructions. You might be able to find the same battery in a big-box store or discounter, but make sure to check the owner's manual to ensure it's compatible with your vehicle.

Replace the internal key

To prevent theft, most key fobs have an electronic key inside. When the fob battery dies it leaves an internal key that is blank which can open doors and trunks (and in some cases, start certain vehicles). A majority of people don't realize they can avoid a trip to the dealership by replacing the fob's batteries. Most modern fobs have flat watches-style batteries that are easy to find in auto parts stores and hardware shops. Choosing the right type of battery is important however. A bad battery can damage the electronic circuitry, which can cause the battery to fail sooner.

If you change the battery, and the issue is still there it could be a sign something else is happening with your car. If you have an owner's manual, check to see if you can use a reset procedure to restore the fob's original programming. If this doesn't work you'll have to visit a dealer or an independent shop that is specialized in vehicle security systems and fob programming.

Fobs may also malfunction due to malfunctioning 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. It is possible that you will need to get closer to the car to get it to work.

It could be necessary for a professional to remove the case of the fob to replace the transmitter. A simple screwdriver is enough to get the job done however, some fobs have complicated release mechanisms that require a special tool or specialized equipment available only at a dealership. This job should be done by a qualified mechanic to avoid damaging the fob and yourself.

Reprogramming the Key

A key fob that's not working could just require a new battery. Because these batteries are cheap and readily available in pharmacies and home improvement stores, this is the ideal first step before purchasing a new car key fob.

Alternatively, you may be able to reprogram the fob on your own by following a few basic steps. car key fob repair near me varies between vehicle manufacturers, so it is important to consult your owner's manual and study the specifics of the model you own. For instance the key fob might require that the ignition be turned on while reprogramming it. One key fob may require the key to be inserted several times.


The general process is simple. First, ensure that the new battery is in place. Then, get in the driver's seat, and close all doors EXCEPT for the driver's side door. This will ensure that the new key is communicating with the vehicle properly. Then, put the old key back in the ignition and switch it to the ON position, but don't start the engine. Press the lock button while aiming the fob at the receiver of the transmission. This is typically located on the front above the mirror. In a short period of time the key will announce to the vehicle that it's been programmed by cycling the doors' locks or emitting a chime. This can be a tricky procedure, so pay attention to the timing and avoid pressing too hard the button.

If the key fob isn't working Try reprogramming it using new batteries. If the issue persists, you might want to visit your local locksmith or dealer. A professional locksmith will have the tools and programming equipment to reprogram your car's fob, or create a new key if it's needed.

Genesky says he's able to program newer fobs at around $200 to $250, based on the vehicle. He's experienced European models rejected due to the fact that there isn't the equipment required. Luckily, the majority of aftermarket fobs are programmable but it's always recommended to consult the dealer of your choice first to find out what the cost is.

How do I get a new fob

If your key fob is simply beyond repair, you may need to get an alternative. Depending on the brand and model, the dealer or an auto locksmith may be able to help. The dealership is likely to be the most expensive option for a replacement fob but it will also have the tools and software required to program your car correctly. For a more affordable solution, a variety of locksmiths can provide you with a brand-new car key fob at a lower cost.

Before you rush to get a new fob it's a good idea to try resetting your current device. The owner's guide should explain the correct method of reset. It is typically a series button presses which restores the factory settings.

It is recommended to review your owner's manual as well as warranty information prior to deciding the best place to get a key fob replacement. If your car is still under warranty, or you have a car-insurance policy or auto club membership that provides bumper-to-bumper insurance, you might be eligible for reimbursement for the cost of an entirely new fob.

The process of getting a fob can be simple enough, but finding the right place to have it done isn't easy. You may want to visit the dealer for this service if are driving a brand new car and you want peace of mind knowing that your key fobs work properly. If you're looking for an option that is more affordable, it is often possible to find a locksmith who is independent who can provide the same service at a much lower cost.

If you aren't comfortable handling this type of work on your own A professional locksmith could be a good option. They are skilled and equipped to replace or reprogram the majority of car key fobs, and often, they can complete the task quickly. Additionally, locksmiths can often come to your office or home to complete the task which is convenient for some people. They can cut keys and program them on site if you've lost keys. This is ideal for those who do not want to leave their car in the garage.