5 Laws Anyone Working In Repair Car Key Should Know

5 Laws Anyone Working In Repair Car Key Should Know

How to Repair a Car Key Fob

You key fob is likely to be tossed around often. This can cause its buttons to get stuck or broken. Try giving it a good clean and replacing the battery, if needed.

Most cars are powered by batteries that are coin-style that you can buy at big box stores, home improvement retailers and pharmacies. Certain models require programming equipment that is available only to dealers.

Dead Battery

The car key fob is a small and useful device that makes entering your car and starting it easier than ever. What happens when you press the button a few times and nothing happens? The most frequent reason for this is a dead battery. Fortunately, the battery can be simple to replace. You can get replacements in auto parts stores and supermarkets and also at some home improvement stores.

Other features available through the key fob might not work. It could be due to an issue with the mechanical system, an internal electrical issue or even a malfunctioning deprogramming in the car's receiver. In these instances it's recommended to contact a professional.

Most manufacturers have an electronic slot inside the fob for use in the event of a dead cell. Most of the time the key slot is hidden behind a cover on the fob handle. You can insert your physical key into the slot to open your doors and then start your vehicle. Make sure to insert the key fob once you have started the car!

If you're fortunate enough to have a Ford car with SYNC Connect, there's another method to start the car without using the key fob. The cupholder in the majority of Fords with SYNC Connect has a backup "E blade". This is a mechanical key that can be used to press the starter button in the event that your key fob fail to start the car. To get the most benefit of this feature, ensure that your car's battery is charged and that you review the owner's manual in order to see what the procedure is.

If your car continues to have problems after changing the battery in your key fob you might need to call an authorized locksmith or dealer to get the fob or battery repaired. In certain cases the key fob can be programmed into your car with a new battery from the dealership or at certain Interstate All Battery Center locations. But this will only work when the circuit board and antennas aren't damaged.

Damaged Buttons

Through the course of its existence, your car key fob's buttons are bound to undergo a lot wear and tear. They are susceptible to being dropped and are frequently in purses and pockets. This jolting can cause the internal components to become loose or damaged, resulting in them not responding when you press them. This problem can be fixed by a few simple steps, but you may require the assistance of a locksmith.

The most common reason for a car keyfob to stop working is that the batteries are dead. These tiny coin-shaped batteries are fairly inexpensive, and it's not difficult to find them in hardware stores or big-box retailers. You can also find videos on how to replace the battery for your key fob on YouTube or in the owner's manual.

It's also important to be aware that some key fobs require a specific procedure to enter the programming mode required for changing the battery. In these instances you'll need look up the owner's manual and/or an auto locksmith to make sure you are following the proper procedure.

Leaving your key fob in extreme hot or cold temperatures can cause it to stop functioning in particular if the battery has died. In such a case you'll have to talk to an automotive locksmith or your dealer to obtain the replacement fob.

If the buttons on your key fob aren't responding it could be because the contacts inside are worn out. These contacts are rubber-like and coated with an electricity-conducting film, but they can start to wear out over time due to repeated use. You can fix this problem by taking apart the key fob and putting a piece metallic tape over the worn out contacts.

It's important to remember that certain key fobs are extremely tricky to open and can't be opened safely without the use of specialized equipment only available at a dealership. If you attempt to open it with an screwdriver, or any other tool, you could end in causing damage to the internal circuit board. This could result in a much more expensive repair bill.

Circuit Board Issues

If your key fob remains able to unlock the doors of your car and even start your engine however, it's not functioning as well as it used to it could be the issue with the circuit board. The circuit board is an electronic chip that's in the case. It sends signals to the car that tell it if you want to lock the doors, open the trunk, or turn off the ignition. If the circuit board is damaged, your keyfob isn't able to transmit these signals.

You can repair a damaged circuit board by yourself if you have some technical knowledge. Begin by removing the battery and separate the holder and rubber button assembly from the circuit board. Use a cotton swab along with some rubbing alcohol to scrub around the contacts and plastic frame. This should eliminate any rust that blocks the circuit board from sending signals.

After you've assembled your key fob, verify whether it's in programming mode. Check your owner's guide for instructions. Many vehicle manufacturers have online videos that explain how to do it. If you're not sure how to do this then you can take your key fob into an expert locksmith who is knowledgeable about the model of your vehicle.

Some modern key fobs have an integrated receiver that lets you to unlock your trunk and open the doors, and also turn on your ignition and start the engine from an extended distance. They are generally more reliable and operate across a wider range. If your key fob doesn't perform as well as it used too, it may have an internal issue that isn't working or an external antenna that is not working properly.

If you're having trouble getting your key fob to function the most likely reason is a dead battery. It's cheap and easy to replace. But if the fob's buttons or circuit board is damaged, you'll need have it professionally repaired and reprogrammed. Most dealerships offer this service but you can also locate a shop that is specialized in your car's brand.

Forgotten Key

When you've lost your car key fob, it could be an absolute nightmare. You can turn your home upside down and retrace your steps and searching all over, including in bags, drawers, under couches, and even in your cat's bed. You'll eventually find it. Preventative measures are the best way to ensure that you don't lose your key fob. If you have even a little ADD or are just forgetful, make multiple copies and hand them out to family and close friends members, so that when you lose yours, you won't spend four hours covered in sweat and blaming yourself for the rest of your life.

Many cars have key fobs that let you to lock and unlock doors, and in certain instances, activate the alarm system or open the trunk. Some of the more sophisticated models come with even more cool features, such as the ability to call your car's location by pressing a button.  how to repair car key fob  isn't in all models but if you own one of the cars that can do it (Genesis GV60 and Hyundai Sonata are two examples) This is an amazing feature to have.

The good thing is that if you have an extra key fob that's programmed to your vehicle, then you can use it to start your vehicle in the event that you lose the original. You can also talk to an automotive locksmith and request them create a new key fob that's specifically programmed for your vehicle. However, before doing this, check with your dealership to see if they're able to offer the replacement key fob for you at a lower price.


If you don't own an extra alternative to start your vehicle is to contact an auto locksmith who will either replace the key fob you have or create a new one. Dealers can also help, but they will need your vehicle to be towed as well as proof of ownership. But the good news is that these services are fairly affordable, particularly when compared with buying a new key from a dealership, which can cost $200-$250.