The 10 Scariest Things About Car Key Fob Repair Car Key Fob Repairs

Today's key fobs are more than just a way to unlock and start vehicles. This added complexity could cause costly repair costs if it breaks.

The good news is that the majority of fobs are equipped with flat-watch-style batteries that are easy to replace at home. It is possible that a reset will bring it back to life.

Battery Replacement

A dead battery is the most frequent reason for a key fob not working. This is a simple repair, and is worth a try before you go spending money on a new fob. You can buy an additional button cell battery at a local auto part retailer or hardware store If you own one. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) to get specific instructions on how to replace and open the battery in your fob.

Most fobs come with two halves that snap togetherYou'll need to pry the sides apart to get to the battery. You'll usually need a small screwdriver or a different tool with a thin, flat blade. It might help to look for a groove along the bottom of the fob that you can use to put your tool in between. You might also want to be on the lookout for small pieces that may fall off while working.

Insert the new battery in the same way as you removed the old one. The positive (+) side should be facing the buttons and the reverse (-) the markings on the compartment for the battery.

Check the fob to determine if it works by pushing a button. If it doesn't, there could be an issue with your vehicle that requires a professional to repair or replace.

Certain key fobs can be difficult to open and their contacts could be fragile and easily corrosion-prone. In these situations, the best option is to consult a car expert or a dealer. When replacing a battery be gentle and follow your owner's manual. You might be able to find the same battery at a big-box retailer or discounter, however, make sure you check the owner's manual to make sure it is compatible with your vehicle.

Replacing the Internal Key

To guard against theft, many key fobs are equipped with an internal mechanical key that is hidden within. When the battery in a fob dies it will leave a blank key left behind, which can be used to open trunks and doors. In some cases it is possible to start certain cars. A majority of people don't realize they can avoid a trip to the dealership by recharging the fob batteries. The flat watch-style battery is found in the majority of modern fobs. These batteries are easily found in hardware stores and auto parts stores. Choosing the right type of battery is essential, however. A bad battery can damage the electronic circuitry, causing the fob to fail much earlier.

If you try replacing the battery and discover that the problem persists it could be a sign that something else is happening in your vehicle. If you have an owner's manual look for there is a reset option available to restore the fob's original programming. If this doesn't work then you'll need to go to a dealership or an independent shop that specializes in vehicle security systems and fob programming.

Fobs can also malfunction because of faulty transmitter receivers. They are typically located near the steering wheel or on the dashboard. They transmit signals to allow you to unlock your vehicle and start it using the fob. It is possible that you will need to get closer to the car to make it work.

It may be required for a professional to access the case of the fob to replace the transmitter. A simple screwdriver is usually enough to suffice, but certain fobs require a specific tool or equipment that can only be purchased at a dealer. This task should be done by a certified mechanic to avoid damaging the fob and 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 method to start before you purchase an entirely new key fob.

Alternatively, you may be able to reprogram the fob yourself by following the steps. This process can vary between vehicles, so you should consult your owner's guide and study the specific model of your vehicle. For instance the key fob might require that the ignition be on while reprogramming it. Another might need the key to be inserted and removed repeatedly.

The basic procedure is easy. First, ensure that the new battery is firmly in place. Close car key fob repair service , except the driver's door. This will ensure that the new key is communicating with the vehicle in a correct manner. Put the old key in the ignition, turn it ON, but don't start the engine. Press the lock button while aiming the fob toward the receiver of the transmission. This is typically located on the front, above the mirror. The key will notify the vehicle within a short amount of time that it is being programmed. This can be accomplished by turning the door locks, or emitting an audible chime. This process can be tricky, so it's important to be attentive to the timing and to not over-press the key button.

If the key fob still isn't working, try reprogramming it again using new batteries. If the problem persists you might want to check with your local dealer or locksmith. A professional locksmith will have the tools and equipment to reprogram your car's fob or clone an entirely new key if required.


Genesky says he's able to program newer fobs for $200 to $250, based on the car. He's experienced European models rejected due to the fact that he lacks the expensive equipment required. Fortunately, many aftermarket fobs can be programmed however it's recommended to consult the dealer of your choice first to see what the cost is.

Finding a New Fob

If your key fob can't be repaired, you may require another one. Depending on the brand and model, the dealership or an auto locksmith may be able to help. The dealership will likely be the most expensive option for a fob replacement However, they'll have the necessary tools and software needed to program your vehicle correctly. For a more affordable option, a number of independent locksmiths can provide you with new car keys for a more affordable price.

It is a good thing to attempt to reset the fob you have before you rush out to buy a new one. The owner's guide should explain the correct procedure for reset. This is usually the result of a series of button presses that restores the factory programming.

It is recommended to read your owner's manual as well as warranty information before you decide the best place to get the replacement of your key fob. If your car's warranty still in effect or you have an auto club or car insurance policy that covers bumper to bumper, you may qualify for a reimbursement of the cost of replacing the fob.

Finding the best place to get a fob can be difficult. You might want to go to the dealer for this service if you have a newer vehicle and want peace of mind knowing that your keyfobs are working correctly. If you're looking for an affordable alternative it is possible to find a locksmith independent who can provide the same services for a lower cost.

A locksmith professional is a good option if you're not comfortable doing this type of work. They are trained and equipped to replace or reprogram all kinds of car key fobs, and often they can do it quickly. Locksmiths can also come to your house or office, which is convenient for many people. They can cut keys and program them on the spot in case you've lost them. This is perfect for those who don't like to leave their car without a key.