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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 cars. This added complexity could result in costly repairs when it fails.

The positive side is that many fobs have flat-watch-style batteries that are simple to replace at home. And you may find that a reset can make your device work again.

Battery Replacement

A dead battery is the most common reason for a key fob not working. It's simple to solve and is worth a try before you invest in an alternative fob. Simply take your car to an hardware or auto parts retailer that stocks button cells and choose an alternative. You can also refer to your owner's guide (or YouTube for videos explaining how to replace the battery) for specific instructions on how to remove and replace the battery in your fob.

You'll have to gently pull away the sides of the majority of fobs to access the battery. You'll need a small, flat-bladed screwdriver, or another tool with a thin blade. You can put your tool into a slot on the bottom of the key fob. You might also want to keep an eye out for small pieces that could fall off while working.


When you have your new battery, you can insert it in the same manner that you removed the old one. Make sure the positive (+) side is facing up toward the buttons, and that the negative (-) side of the battery is aligned correctly with the markings in the battery compartment of your fob.

Press a button to test the fob. If it doesn't, there could be an issue with your vehicle that requires a professional to repair or replace.

Certain key fobs are difficult to open and their contacts could be fragile and easily damaged. In these cases an expert in the field or the dealer will likely be the best option. When replacing a battery be gentle and follow your owner's manual. You may be able to locate an identical battery at a big-box retailer or discounter, however, make sure you read the owner's manual to ensure it is compatible with your car.

Replacing the Internal Key

To protect against theft, the majority of key fobs have a mechanical key hidden inside. If the battery inside the fob fails it will leave a blank key left behind that can be used to open doors and trunks. 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 most modern fobs. They can be found at auto parts stores and hardware stores. It is important to use the correct type of battery. The wrong kind can damage the electronic circuitry, causing the battery to fail earlier.

If you replace the battery and find the issue persists it could be an indication that something else is wrong with your vehicle. Check your owner's manual to see if there's an option to reset the fob and bring the fob back to factory-setup. If this doesn't work then you'll need to visit a dealership or an independent shop that specializes in vehicle-security systems and fob programming.

Fobs may also fail because of faulty transmitter receivers. They are typically located near the steering wheel or in the dashboard. They transmit signals to allow you to unlock your car and begin it using the fob. You may have to move closer to the car in order to get it to work.

It might be required for a professional to remove the case of the fob to replace the transmitter. car key fob repair near me can usually do the job however, some fobs have complicated release mechanisms that require a specific tool or specialized equipment available only at a dealer. It's a good idea to have a qualified mechanic perform this task so you don't accidentally break the fob or injure yourself.

Reprogramming the Key

Often a non-functional key fob simply requires a new battery. Since these batteries are inexpensive and readily available in pharmacies and home improvement stores, it's an excellent first step prior to buying an entirely new car key fob.

Alternately, you might be able to reprogram the fob on your own by following some basic steps. This process can vary between vehicles, so it is recommended to read the owner's manual and research your specific model. For example, one key fob may require that the ignition be turned on while reprogramming it. A key fob might require the key to be inserted multiple times.

key fob repairs is simple. Make sure that the battery is securely in place. Then, get in the driver's seat and close all doors, excluding the driver's side door. This will ensure that the new key fob communicates with the vehicle properly. Then, place the old key back into the ignition and switch it to the ON position, but don't start the engine. Press the lock button while aiming the fob toward the receiver for transmission. This is typically located on the left side, just above the mirror. Within a short time frame, the key will indicate to the vehicle that it's being programmed by turning off the doors' locks or emitting a chime. This can be a tricky process, so pay attention to the timing and avoid pressing too hard the button.

If the key fob won't work after reprogramming it, try using a new battery. If the issue persists, you might want to visit your local locksmith or dealer. A professional locksmith will have the tools and equipment needed to reprogram your car's fob or clone the key if needed.

Genesky says he can usually program newer fobs at around $200-$250, depending on the model of vehicle. However, he's had the need to turn down customers who have European models because there's no equipment they require. Fortunately, many aftermarket fobs are programmable but it's always best to check with a car dealer first to find out the price.

How do I get a new fob

If your key fob is beyond repair, you may need to purchase a new one. Based on the make and model, the dealership or an auto locksmith might be able to help. The dealership is likely to be the most expensive alternative for replacing a fob however, they'll have the necessary tools and software to program your car correctly. If you are looking for a less expensive option, a number of independent locksmiths will be able to provide you with a brand-new car key fob for a more affordable cost.

It is a good thing to attempt to reset the fob you have before you decide to buy an entirely new one. The owner's manual should outline the correct procedure for reset. It is typically a series button presses that reset the factory program.

It's an excellent idea to read your owner's manual and warranty information prior to deciding where to go for a key fob replacement. If your car's warranty is still active or you have an auto club or car insurance policy that covers bumper-to-bumper you could be eligible for a reimbursement on the cost of a replacement fob.

Getting a fob is easy enough however, finding the right place to have it done isn't easy. You may want to visit the dealer for this service if are driving a brand new car and want to be confident that your key fobs are functioning properly. If you're seeking a less expensive alternative, it's possible to find a locksmith that can provide the same service for an affordable cost.

If you aren't comfortable handling this kind of work yourself, a professional locksmith may be a great choice. They're trained and equipped to change or reprogram car key fobs of all types and can do it quickly. Locksmiths can also come to your house or office, which is convenient for many. They can even cut and program keys on the spot when you've lost them, which is ideal for those who don't like to leave their cars unattended.

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