Car Key Fob Repair Isn't As Difficult As You Think
Car Key Fob Repairs
Key fobs of today do a lot more than unlock and start vehicles. However, the added complexity could result in high repair bills in the event that one of them malfunctions.
The good news is that the majority of fobs use flat watch-style batteries that are simple to replace at home. And you may find that a reset can get yours working again.
Battery Replacement
A dead battery is the main cause of a key fob that isn't working. It's a simple solve and is worth a try before you spend money on a replacement fob. Take your car to a local auto parts store or a hardware retailer that sells button cell batteries and purchase an alternative. You can also consult your owner's manual (or in the case that you don't have one, YouTube is full of videos from people who show you how to do it) for specific instructions on opening and replacing the battery on your particular type of fob.
You'll have to gently pull away the sides of the majority of fobs in order to access the battery. You'll usually need a small screwdriver or another tool with a thin, flat blade. You can put your tool into a notch at the bottom of the key fob. You may also want to watch for tiny pieces that could break loose while you work.
Install the new battery in the same manner as you removed the old one. The positive (+) side should be facing the buttons and the reverse (-), the markings on the compartment for the battery.
Check the fob to determine whether it functions by pressing the button. If it doesn't, you might have an issue with your car that requires a specialist to fix or replace.
Some key fobs are difficult to open and their contacts may be brittle and easily damaged. In these cases you should consult a specialist in your car or the dealer will likely be your best option. If you're looking to replace batteries, you should be very gentle and follow the instructions specifically in your owner's manual. You might be able find a similar battery at a discounter or a big-box retailer however, you'll need to refer to your owner's manual to be sure that it's compatible with your vehicle.
Replace the internal key
To guard against theft, many key fobs have a mechanical key hidden inside. When the fob battery dies, it leaves an internal key blank that can unlock trunks and doors (and in some cases, even start certain cars). Most people don't realize they can avoid a trip to a dealership by replacing the fob batteries. The majority of modern fobs utilize flat watches-style batteries that are readily available at hardware stores and auto parts shops. It is essential to choose the correct type of battery. The wrong type can damage the circuitry, causing the fob to fail much earlier.
If the issue persists after you replace the battery, it could be a sign that there is something else going on in your vehicle. If you have an owner's guide look for a reset procedure is available to restore the fob's original programming. If that doesn't help then you'll need to visit a dealer or an independent shop that specializes in vehicle-security systems and fob programming.
Fobs can also fail because of faulty transmitter receivers. They are typically located close to the steering wheel or in the dashboard. They transmit signals to allow you to unlock your vehicle and start it using the fob. You may have to move closer to your car to enable it.
It could be required for a professional to access the case of the fob to replace the transmitter. A simple screwdriver is enough to accomplish the task, but some fobs have complex release mechanisms that require a special tool or specialized equipment that is available only through a dealer. It's best to have a certified mechanic perform this task so you don't accidentally break the fob or cause injury to yourself.
Reprogramming the Key
A key fob that is not functioning simply needs a fresh battery. Because these batteries are cheap and readily available in pharmacies and home improvement stores, it's the ideal first step before investing in an entirely new car key fob.
Alternately, you might be able to program the fob yourself by following some basic steps. The procedure may differ for different automobiles, so refer to the owner's manual and research your specific model. One key fob might require that the ignition be on when reprogramming. One key fob could require the key to be inserted several times.

The process is straightforward. Make key repair car that the battery is securely in place. Close all doors except the driver's door. This will ensure that the new key fob communicates with the vehicle properly. After that, put the old key back into the ignition and switch it to the ON position, but don't start the engine. Next, press the lock button on the fob, while looking at the transmission receiver, which is typically located in the front of the car above the mirror. The key will inform the vehicle within a short period of time that it is being programmed. This can be done by cycling the door locks or by emitting an audible chime. This is a challenging process, so pay attention to timing and don't over-press the button.
If the key fob doesn't work Try reprogramming it with fresh batteries. If the issue persists, you may want to visit your local locksmith or dealer. A professional will have the tools and equipment needed to reprogram your car's fob, or create the key if needed.
Genesky says he's able to program newer fobs for around $200-$250, based on the vehicle. But he's had to turn down customers who have European models because he doesn't have the expensive equipment required. Fortunately, most aftermarket fobs can be programmed but it's always best to check with the dealer of your choice first to find out the price.
Finding a New Fob
If your key fob is beyond repair, you may need to purchase a new one. Depending on your vehicle's make and model, an auto locksmith or a dealership may be able to help. The dealership will likely 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. If you are looking for a less expensive solution, many independent locksmiths will be able to provide you with an entirely new car key fob at a lower price.
Before you decide to purchase an entirely new device it's an excellent idea to try resetting your current device. Your owner's manual should outline the proper procedure for reset that is typically the pushing of a button 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 an additional fob for your key. If your vehicle is under warranty, or you have a car-insurance policy or auto club membership that includes bumper-to-bumper insurance, you might be eligible for reimbursement for the cost of a new fob.
The process of getting a fob can be simple enough however finding the best location to do it can be a challenge. You may want to visit the dealer for this service if have a newer car and you want peace of mind knowing that your key fobs work correctly. However, if you're looking for an affordable alternative, it is often possible to find an independent locksmith who can provide the same services at a much lower cost.
If you aren't comfortable handling this type of work yourself, a professional locksmith can be a great option. They are trained and equipped to repair or replace the majority of car key fobs, and often they can accomplish the task in a short time. Additionally, locksmiths can often come to your home or office to do the job, which can be very useful for certain people. They can even cut and program keys on-site when you've lost them, which is ideal for those who don't like to leave their cars in the dark.