10 No-Fuss Strategies To Figuring Out Your Car Key Fob Repair Car Key Fob Repairs

Key fobs of today can do more than unlock and start cars. This added complexity could cause costly repair costs if it breaks.

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 will make your fob work again.

Battery Replacement

A dead battery is the most frequent reason for the fob's key not working. It's a simple fix, and it's worth a try before you spend money on a new fob. Take your car to a local auto parts store or hardware retailer that carries button cell batteries and purchase a replacement. You can also consult your owner's manual (or, if 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 on your particular type of fob.

Most fobs have two halves that snap together- you'll need to gently break the sides in order to access the battery. You'll typically need a small screwdriver or a different tool equipped with a thin, flat blade. It might help to look for a notch on the lower edge of the fob that you can place your tool between. You might also want to watch for tiny pieces that might break loose while you work.

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

Press central locking key repair to test the fob. If it doesn't, you may have a problem with your car that requires a specialist to fix or replace.

Some key fobs are difficult to open and their contacts could be fragile and easily damaged. In these situations an expert in the field or dealer may be the best choice. If you need to replace a battery, try to be very gentle and adhere to the instructions specifically in the owner's manual. You may be able to locate a battery similar at a big-box store or discounter, but make sure you read the owner's manual to make sure it's compatible with your vehicle.

Replace the internal key

To protect against theft, the majority of key fobs are equipped with a mechanical key hidden inside. When the fob battery dies it leaves an internal key that is blank that is able to unlock doors and trunks (and in some cases, even start certain vehicles). Many people don't realize this, but they can save a trip to the dealership by simply replacing the fob's battery. Most modern fobs use flat-watch-style batteries which are easy to find at auto parts stores and hardware shops. It is important to use the correct kind of battery. The wrong kind can damage the electronic circuitry and cause the fob to fail much sooner.

If the issue persists after you replace the battery, it could be an indication that something else is wrong in your vehicle. Check your owner's manual to determine if there's a reset procedure that can restore the fob's factory-setup. If this doesn't work, you'll have to visit a dealership or a shop independent that specializes in vehicle-security systems and key fob programming.

Fobs may also malfunction because of faulty transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and transmit signals that allow you to unlock and start your car with the fob. If you notice that you're having to get closer and closer to your vehicle to be able to make it work, there's a good chance the transmitter is failing.

It could be necessary for a professional to access the case of the fob to replace the transmitter. A simple screwdriver can usually get the job done however some fobs come with complex release mechanisms that require a special tool or specialized equipment available only through a dealer. It's a good idea to have a certified mechanic handle this job to ensure you don't accidentally break the fob or hurt yourself.

Reprogramming the Key

A key fob that's not working might just need a new battery. They are easily available in home improvement and pharmacy stores and are inexpensive. This is a great way to start before buying a new key fob.

You can also reprogram your key fob on your own If you follow the steps below. This process varies between vehicle manufacturers, so it is important to read the owner's manual and research the specifics of the model you own. For example the key fob might require that the ignition be turned on while reprogramming it. Another key might require the key to be inserted and removed repeatedly.

The general procedure is very easy. Make sure that the battery is securely in place. Close all doors, except the driver's door. This will ensure that the new fob is communicating with the vehicle properly. Insert the old key into the ignition and 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 usually located on the front of the vehicle above the mirror. In a short period of time, the key will indicate to the vehicle that it's been programmed by triggering the doors locks or emitting the sound of a chime. This is a challenging process, so pay close attention to the timing and don't press too hard the button.

If the key fob does not function after reprogramming, you can try replacing the batteries. If the issue is still there, you might want to check with your car dealer or locksmith. A professional will have all the tools and equipment needed to reprogram the car fob or design a new one, if required.

Genesky says he can usually program newer fobs for around $200-$250, depending on the vehicle. However, he's had the need to turn away customers with European models due to the fact that they don't have the costly equipment required. Most aftermarket fobs can be programmed, but you should always check with your local car dealer to determine the cost.

Finding a New Fob

If your key fob is damaged beyond repair, you could need to purchase an entirely new one. Based on the make and model, an auto locksmith or dealership might be able to assist. The dealership is likely to be the most expensive option for a replacement fob, but it also has the tools and software needed to program your car correctly. Numerous locksmiths who are independent provide a new car key fob at the lower cost.

Before you rush to get a new fob it's an excellent idea to try resetting your current device. The owner's manual should provide the correct method of reset. It is typically a series button presses that restores the factory programming.

It is recommended to read your owner's manual and warranty information prior to deciding the best place to get a key fob replacement. If your vehicle is under warranty or you have a car insurance policy or auto club membership that includes bumper-to-bumper coverage, you may be eligible for reimbursement for the cost of a new fob.

Finding a fob is simple enough however finding the best location to do it can be tricky. If you own a new vehicle and you want the assurance with knowing that your key fobs are in working condition, you might be better off visiting the dealership for this service. If you're looking for an option that is more affordable it is possible to find a locksmith who is independent who can provide the same services at a much lower cost.


A professional locksmith is a great option for those who aren't comfortable with this kind of work. They are trained and equipped to repair or replace car key fobs of all kinds and can do it quickly. A locksmith can also visit your office or home which is a great option for a lot of people. They can cut and program keys on site if you've lost keys. This is great for those who don't like to leave their car without a key.