20 Things You Need To Know About Car Key Fob Repair Car Key Fob Repairs

Key fobs today can do more than unlock and start vehicles. However, that added complexity can cause expensive repair costs in the event that one of them malfunctions.

It's important 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 frequent cause of the fob's key not working. It's a simple solve and is worth a try before you spend money on a replacement fob. You can pick up the new button cell at your local auto parts 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) for specific instructions on how to open and replace the battery inside your fob.

You'll have to gently pull off the sides of many fobs to access the battery. You'll typically need a small screwdriver or another tool with a thin, flat blade. It may be helpful to look for a notch on the bottom of the fob that you can put your tool in between. It is also advisable to be on the lookout for small pieces that could come loose while you work.

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

Check the fob to determine whether it functions by pressing the button. If it doesn't, you might have a problem with your car that requires a professional to repair or replace.

Some key fobs require special tools to open and close them, and the contacts inside can be fragile and easily corroded. In these situations an expert in the field or a dealer could be the best choice. When replacing a battery, be gentle and follow the owner's instructions. You may be able find a battery similar in a big-box store or discounter, however, make sure to check your owner's guide to ensure it's compatible with your vehicle.

Replacing the Internal Key

Most key fobs include the physical key mechanical, but it's hidden inside the fob to prevent thieves. If the battery inside the fob goes out it will leave a blank key left behind, which can be used to unlock doors and trunks. In some cases the key could even start certain vehicles. The majority of people don't realize they can save a trip to a dealership by replacing the fob batteries. Most modern fobs use flat-watch-style batteries which are easy to find at hardware stores and auto parts shops. It is essential to choose the correct kind of battery. The wrong type can damage the circuitry and cause the fob to fail much earlier.

If you change the battery and discover that the problem persists it could be a sign that something else is wrong in your vehicle. Review the owner's manual of your vehicle to see if there's an option to reset the fob and restore the fob to factory-setup. If that doesn't help you'll have to go to a dealership or an independent shop that is specialized in vehicle security systems and fob programming.

Fobs may also malfunction because of faulty transmitter receivers. They are typically placed on the dashboard or next to the steering wheel, and they send signals that allow you to unlock and start your car using the fob. If you notice that you're having to get closer and closer to your vehicle to get it to work, there's a high chance that the transmitter isn't working.

It might be required for a professional to access the case of the fob to replace the transmitter. A simple screwdriver can usually do the trick, but certain fobs require a specific tool or special equipment which can only be found at a dealer. This task should be done by a certified mechanic to avoid damaging the fob and yourself.

Reprogramming the Key

Often a non-functional key fob simply requires a new battery. They are easily available in home improvement and pharmacy stores and are inexpensive. This is a good option to begin before purchasing the new key fob.


You can also re-program your key fob yourself If you follow the steps below. This process varies between vehicle manufacturers, so it is important to consult your owner's manual as well as research the specifics of your model. One key fob could require that the ignition switch be on when programming. Another might need the key to be inserted and removed repeatedly.

The process is straightforward. First, make sure that the new battery is firmly in place. Then, sit in the driver's seat, and close all doors, excluding the driver's side door. car key fob repair service will ensure that the new key fob is communicating with the vehicle correctly. Put the old key in the ignition, then turn it ON but do not start the engine. Next, press the lock button on the fob, while aiming it at the transmission receiver, which is typically located on the front of the car above the mirror. The key will signal to the vehicle within a brief amount of time that it is being programmed. This can be accomplished by turning the door locks or emitting an audible chime. This procedure can be difficult, so it's important to pay attention to the timing and to not over-press the key button.

If the key fob doesn't function after reprogramming, you can try using new batteries. If the issue persists, you might want to check with your car dealer or locksmith. A professional locksmith will have the tools and equipment needed to reprogram your car fob or create a new one if necessary.

Genesky says he can usually program newer fobs for $200 to $250, based on the model of vehicle. However, he's had to turn down customers who have European models because there's no equipment required. A majority of the aftermarket fobs are programmed, but you should always inquire with your local car dealer to determine the cost.

How do I get a brand new fob

If your key fob is simply damaged beyond repair, you could need to get an alternative. Based on the make and model, the dealership or an auto locksmith might be able to assist. The dealership is likely to be the most expensive alternative for replacing a fob However, they'll have all the required tools and software needed to program your vehicle correctly. Numerous locksmiths who are independent provide a new car key fob at the lower cost.

It is a good thing to try to reset the fob you have before you decide to buy another one. Your owner's manual should outline the proper reset procedure which is typically a series of button pushes which restores it to factory programming.

It is also recommended to check your owner's guide and warranty information to determine if you can get a replacement fob for your key. If your vehicle is under warranty, or you have a car insurance policy or auto club membership with bumper-to-bumper coverage, you may be eligible to receive a reimbursement for the cost of a new fob.

Finding the best location to purchase a fob can be difficult. You might want to visit the dealer for this service if you have a newer car and you want to be confident that your key fobs work correctly. However, if you're looking for a more affordable option it is possible to find a locksmith who is independent who can provide the same service at a much lower cost.

If you're not confident handling this kind of work yourself A professional locksmith could be a great option. They are trained and equipped to replace or reprogram car key fobs of all kinds and do it quickly. A locksmith can also visit your office or home which is a great option for many. They can also cut and program keys on the spot if you've lost them. This is perfect for those who do not like to leave their car in the garage.