Car Key Fob Repairs
Key fobs today do much more than just unlock and start vehicles. But that extra complexity can result in high repair bills if one of them breaks.
The good news is that most fobs use flat watch-style batteries that are simple to replace at home. You may find that a simple reset can allow your fob to function again.
Battery Replacement
A dead battery is the most common cause of a key fob that isn't working. This is a simple repair, and is worth trying before you decide to spend money on a new fob. You can buy an additional button cell battery at your local auto part store or hardware retailer If you own one. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) to get specific instructions on how to remove and replace the battery inside your fob.
Most fobs come with two halves that snap together -- you'll need to gently break the sides to get to the battery. You'll usually need a small screwdriver or a different tool that has a flat, thin blade. You can wedge your tool into a slot on the bottom of the key fob. You may also want to be on the lookout for small pieces that may fall off while working.
Once you have your new battery, insert it the same way that you removed the previous one. Make sure that the positive (+) side is facing upwards towards the buttons, and that the negative (-) side of the battery is aligned with the markings in the battery compartment of your fob.
Check the fob to determine whether it functions by pressing the button. If it doesn't, you may have a problem with your car that requires a professional to repair or replace.
Some key fobs require special tools to open and close, and the connections inside can be fragile and susceptible to corroding. In these situations, a car specialist or dealer may be the best option. If you're in need of replacing the battery, make sure to be very gentle and follow the specific instructions in your owner's manual. You may be able to find a similar battery at a discounter store or a big-box retailer, but you'll need to check the owner's manual to be sure that it's the right one for your vehicle.
Replace the internal key
Most key fobs contain an actual mechanical key that is hidden within the fob to prevent thieves. When the battery in the fob dies, it leaves an internal key that is blank which can open trunks and doors (and in some cases, even start certain cars). Most people aren't aware of this, but they can avoid a trip to the dealership by simply replacing the fob battery. The flat watch-style battery is found in most modern fobs. These batteries can be found at hardware stores and auto parts stores. It is crucial to choose the correct kind of battery. A wrong type of battery can harm the electronic circuitry and cause the battery to fail sooner.
If you can try this out try replacing the battery and discover that the problem persists, it could be a sign something else is happening in your vehicle. Go through the owner's manual to determine if there's a reset procedure that can restore the fob to factory programming. If that doesn't help, you'll need to visit a dealer or an independent shop that is specialized in vehicle security systems and fob programming.
Fobs may also fail because of faulty transmitter receivers. They are typically placed on the dashboard or near the steering wheel, and they send signals that allow you to unlock and start your car with the fob. You may need to get closer to the car in order to enable it.
It may be required for a professional to remove the case of the fob to replace the transmitter. A simple screwdriver can usually do the job however, some fobs have complex release mechanisms that require a special tool or specialized equipment available only at a dealership. It's best to have a certified mechanic do this job so that you don't accidentally break the fob or injure yourself.
Reprogramming the Key
A key fob that is not working could just require a new battery. Because these batteries are cheap and readily available at pharmacies and home improvement stores, this is the ideal first step before investing in the purchase of a new car key fob.
You can also re-program your key fob yourself by following some basic steps. This procedure can differ between vehicles, so it is recommended to refer to the owner's manual and research your specific model. For example one key fob could require the ignition to be on while reprogramming it. Another key might require the key to be removed and inserted several times.
The basic procedure is simple. Make sure that the battery is securely in place. Then, get in the driver's seat and shut all doors EXCEPT for the driver's side door. This will ensure the new key is communicating with the vehicle in a correct manner. Put the old key in the ignition, turn it on but don't start the engine. Next press the lock button on the fob while aiming it at the transmission receiver, which is usually located in the front of the car above the mirror. Within a brief time, the key will indicate to the vehicle that it's been programmed by triggering the doors' locks or emitting an emitted sound. This can be a tricky process, so pay close attention to the timing and avoid pressing too hard the button.
If the key fob doesn't work after reprogramming it, try using new batteries. If the issue is still there, you may want to visit your car dealer or locksmith. A professional locksmith will have the tools and equipment to reprogram the car fob or design a new one if necessary.
Genesky says he's able to program newer fobs for $200 to $250, based on the model of vehicle. However, he's had the need to refuse customers with European models because they don't have the costly equipment they require. Most aftermarket fobs can be programmed, but you should always consult your local dealer to determine the price.
A New Fob
If the key fob you have cannot be repaired, you may have to purchase another one. Depending on your vehicle's make and model, an auto locksmith or a dealership may be able help. The dealership is likely to be the most expensive choice for a replacement fob but it also has the tools and software needed to program your car properly. Many locksmiths in independent shops offer a brand new car key fob at a much lower price.
Before you purchase a new key fob, it is a good idea to try resetting your current one. Your owner's manual should outline the proper reset procedure that is typically a series of button pushes that restores the original programming.
It is also recommended to check your owner's guide and warranty information to see whether you are eligible for an additional key fob. If your car is still under warranty or you have a car insurance policy or auto club membership that provides bumper-to-bumper protection, you may be able to receive some reimbursement for the cost of the new fob.
Finding the right where to purchase the fob you need can be difficult. If you own a new vehicle and you want the assurance from knowing that your key fobs are in working condition, you may be better off visiting the dealership for this service. If you're looking for a more affordable alternative, it's possible to find a locksmith that will offer the same service at a lower price.
A locksmith who is professional is a good option If you're not confident doing this type of work. They are certified and equipped to reprogram or replace all kinds of car key fobs and often they can accomplish the task in a short time. key repairs is also able to visit your office or home, which is convenient for many. They can cut keys and program them on site if you've lost keys. This is great for those who don't want to leave their vehicle without a key.