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Car Key Fob Repairs

Key fobs today do a lot more than unlock and start cars. However, that added complexity can result in costly repairs when one of them fails.

It's good to know that most fobs are powered by flat watch-style batteries, which can be replaced at home. You may find that a simple reset can make your fob work again.

Battery Replacement

The most frequent reason the key fob ceases to function is because of the battery being dead. It's a simple fix, and it's worth trying before you spend money on a new key fob. Take your car to a local auto parts store or hardware retailer that sells button cell batteries and pick up a replacement. You can also consult your owner's manual (or in the event that you don't have one, YouTube is full of videos from people explaining how to do it) for specific instructions on opening and replacing the battery in your particular type of fob.

You'll have to gently pull away the sides of the majority of fobs to reach the battery. You'll need a small flat-bladed screwdriver, or another tool with a thin blade. It may be helpful to look for a notch on the bottom of the fob that you can wedge your tool between. You might also want to be on the lookout for small pieces that may come loose while you work.

When you have your new battery, place it the same way that you removed the previous one. Make sure that the positive (+) side is facing upwards toward the buttons and that the negative (-) side of the battery is aligned with the marks inside the battery compartment of your fob.

Test the fob to see whether it functions by pressing the button. If it doesn't work, you may have an issue with your car that requires a specialist to fix or replace.





Certain key fobs are difficult to open, and the contacts could be fragile and easily corrosion-prone. In these cases an expert in the field or a dealer could be the best choice. If you're looking to replace a battery, try to be very gentle and follow the instructions that are specific to the owner's manual. You may be able find an identical battery at a big-box retailer or discounter, however, make sure to check the owner's manual to make sure that it's compatible with your vehicle.

Replace the internal key

The majority of key fobs have a physical mechanical key, but it's hidden inside the fob to prevent thieves. If the battery inside the fob fails it will leave a blank key left behind, which can be used to open doors and trunks. In some instances it is possible to start certain vehicles. The majority of people don't realize that they can avoid a trip to the dealership by recharging the fob batteries. Most modern fobs use flat watch-style batteries that are readily available in auto parts stores and hardware shops. It is crucial to choose the correct type of battery. The wrong kind can damage the electronic circuitry, causing the fob to fail earlier.

If the problem continues to persist after you replace the battery, it could be a sign that something else is going on with your vehicle. If you have an owner's manual look for there is a reset option available to restore the fob's factory programming. If that doesn't help then you'll need to go to a dealership or an independent shop that is specialized in vehicle security systems and fob programming.

Fobs may also fail due to malfunctioning 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 being required to get closer and closer to your vehicle to be able to make it work, there's a good chance that the transmitter isn't working.

A professional might have to open the case of the fob to replace the transmitter. A simple screwdriver will usually work, however certain fobs require a special tool or a special piece of equipment that can only be found at a dealership. It is a good idea to have a certified mechanic handle this job to ensure you don't damage the fob or injure yourself.

Reprogramming the Key

Often a non-functional key fob just requires a new battery. They are easily available in both pharmacy and home improvement stores and are affordable. This is a great method to start before you purchase an entirely new key fob.

Alternatively, you may be able to program the fob by following a few basic steps. The procedure may differ for different automobiles, so refer to the owner's manual and study the specific model of your vehicle. One key fob could require the ignition to be on when changing the program. Another may require the key to be inserted and removed multiple times.

The basic procedure is simple. Make sure that the battery is securely in place. Then, sit in the driver's seat and shut all doors EXCEPT for the driver's side door. This will ensure that the new key fob communicates with the vehicle correctly. After that, put the old key back into the ignition and turn it to the ON position, but do not start the engine. Next, press the lock button on the fob while aiming it at the transmission receiver, which is usually situated on the front of the car above the mirror. Within a short time frame, the key will indicate to the vehicle that it's being programmed by triggering the doors' locks or generating the sound of a chime. This is a difficult procedure, so pay attention to the timing and avoid pressing too hard the button.

If the key fob doesn't work Try reprogramming it using new batteries. If the issue persists then a visit to your car dealer or locksmiths should be considered. A professional locksmith will have the tools and equipment to reprogram your car's fob, or create a new key if it's needed.

Genesky says he can usually program newer fobs for $200-$250, depending on the model of vehicle. However, he's had the need to turn away customers with European models due to the fact that there's no equipment required. Luckily, the majority of aftermarket fobs can be programmable, but it's always recommended to consult an auto dealer first to determine what their price is.

Finding a New Fob

If your key fob is beyond repair, you may need to purchase an alternative. Depending on the make and model, the dealer or an auto locksmith may be able to assist. The dealership is likely to be the most expensive choice to replace your fob, but it also has the tools and software needed to program your car correctly. Many independent locksmiths offer a brand new car key fob for the lower cost.

Before you rush to get a new fob, it is recommended to consider resetting your current one. The owner's manual should outline the correct procedure for reset. It is typically an orderly press that reset the factory program.

You should also look over the owner's guide and warranty information to see whether you can obtain an alternative key fob. If your car is still under warranty or you have a car insurance policy or auto club membership with bumper-to-bumper coverage, you may be eligible for reimbursement for the cost of an entirely new fob.

The process of getting a fob can be simple enough, but finding the right location to do it isn't easy. If you have a relatively new car and would like the assurance from knowing that your key fobs are in good condition, you may prefer going to the dealership for this service. If you're seeking a less expensive alternative, it is possible to find a locksmith that will provide the same service for an affordable cost.

car key repair cost is a good option for those who aren't comfortable with this kind of work. They're trained and equipped to replace or reprogram car key fobs of all types, and can do so quickly. A locksmith is also able to visit your house or office which is convenient for many people. They can cut keys and program them on site if you've lost keys. This is perfect for those who do not want to leave their vehicle in the garage.