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How to Repair a Car Key Fob

Your key fob is likely to be jostled a lot. This could cause the buttons to get stuck or damaged. Try giving it a thorough check and replacing the battery if you need to.

The majority of cars have a coin-style battery that you can buy at pharmacies, big box stores and home improvement stores. However, some models require special programming equipment that dealers only have.

Dead Battery

The car key fob is a small and useful device that makes entering your vehicle and starting it much easier than ever. What happens when you press the button a few times but nothing happens? The most common cause for this is an unresponsive battery. Fortunately, the battery is easy to replace. You can find replacements in auto parts stores, supermarkets, and some home improvement stores.

Some of the other features offered by the key fob may not work. This could be because of an issue with the mechanical system or an electrical issue inside the car or even a problem with deprogramming in the receiver of your car. In these situations, it's probably best to call an expert.

Thankfully, the majority of manufacturers include a mechanical key slot inside the fob, which can be used in the event of an unresponsive battery. In most cases 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 when you start your car!

If you have a Ford with SYNC Connect you can also start the car using the key fob. The cupholder on most Fords with SYNC Connect has a backup "E blade". This is a key that's mechanical that can be used to push the starter button, should your key fob fail to start the car. To make the most of this feature, you should make sure the battery is charged. You can also consult the owner's manual to learn how to do it.

If your car is still having problems after changing the battery on your key fob, you may need to contact an authorized locksmith or dealer to get the fob or battery repaired. In some instances, a new battery can be used to program the key fob using your vehicle at the dealership or select Interstate All Battery Center stores. This is only possible as long as the antennas and circuit board aren't damaged.

Damaged Buttons

Through the course of time your car key fob's buttons are likely to see many wear and wear and tear. They are susceptible to dropping and are frequently being tossed around in pockets and purses. This could cause internal components to become damaged or loose, which could result in them not responding to your pressing. key fob repairs can be solved with a few easy steps, but you might require the assistance of a locksmith.

The most frequent reason for a car keyfob to stop working is that the batteries are dead. These small coin-shaped batteries can be found at most hardware stores and large-box retailers. They aren't expensive. You can also find videos that explain how to replace the key fob battery on YouTube or in your owner's guide.

It's important to remember that some keyfobs need specific steps to enter the required programming mode to replace the batteries. In these instances you'll need to read the owner's manual or an auto locksmith to ensure that you're following the proper procedure.


If the battery is dead, putting your key fob at extreme temperatures can cause it to cease functioning. If this happens, you'll require contacting an automotive locksmith or a dealer to request a replacement fob.

If the buttons on your key fob remain unresponsive, it could be that 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 attempt to solve this issue by taking the key fob off and placing a piece of metallic tape over the worn-out contacts.

It's important to remember that certain key fobs are extremely difficult to open and can't be opened with confidence without the right tools that are only available at a dealership. If you attempt to open it with a screwdriver, or any other tool, you may end with damage to the circuit board. This could result in an even more costly repair bill.

Circuit Board Issues

If your key fob remains in a position to unlock the doors of your car and even start your engine but it's not as far as it used to it could be a problem with the circuit board. The circuit board is an electronic chip within the case. It sends signals to the car that tell it if you want to lock the doors, open the trunk or switch off the ignition. If the circuit board is damaged the key fob won't be able to send these signals.

If you're a tech expert you can repair damaged circuit boards yourself. Take the battery off, then remove the rubber button assembly and holder from the circuit board. Clean the contacts and plastic frame using rubbing alcohol and cotton swab. This should remove any rust that's preventing the circuit board from sending signals.

Once you've reassembled the key fob, make sure it's in programming mode. Usually this involves switching it off and on repeatedly, so make sure to check the owner's manual for specific instructions. The majority of car manufacturers have videos online that show how to do this. If you're not confident enough to tackle it yourself, bring your key fob to a locksmith who is trained to work on the specific model of your vehicle.

Certain of the latest key fobs have an integrated receiver which allows you to unlock your trunk, open your doors, and switch on your ignition from some distance. In general, they are more reliable and operate across a wider range. If your key fob doesn't work as far as it did in the past it could be due to an internal issue that isn't working or a faulty external antenna.

The most likely cause for a key fob that isn't working is the battery is dead or not functioning properly. It's cheap and simple to change. But if key repairs or circuit board is damaged, you'll need to be able to have it repaired professionally and changed to a new program. The majority of dealerships will provide this service but you can also find a service that specializes in your car's brand.

Forgotten Key

It can be a nightmare when you lose the car key fob. You can turn your home upside down retracing your steps and searching all over including in bags, drawers, under couches, and even your cat's bed. You'll find it eventually. However, the best way to prevent losing your key fob is by taking preventative measures. If you've even a touch of minor ADD or just forgetful, make several copies and distribute them to your close family and friends members, so that if you lose yours, you don't spend four hours covered in sweat and cursing yourself for the rest of your life.

A lot of cars come with key fobs that allow you to lock and unlock the doors, and in certain cases, activate the alarm system or open the trunk. Some of the more advanced models have even more exciting features, like the ability to call your car's location by pressing the button. This feature isn't included in all models however 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.

If you have a spare car key fob programmed for your vehicle, you can make use of it in the event that you lose your original. You can also get in touch with an automotive locksmith to design a key fob that is programmed for your vehicle. Talk to your dealer to see whether a replacement keyfob might be available at a lower price.

If you don't have an extra key the only way to get your car started is to contact an auto locksmith to come out and cut a new one or replace your current key fob with a blank. Dealers can also do this but they'll require your car to be towed as well as proof of ownership. The good thing is that these services are fairly affordable, particularly when compared with buying a new key from your dealer that can cost between $200 and $250.

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Pub: 04 Oct 2024 01:46 UTC
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