Car Key Fob Repairs
Key fobs today are more than just a way to unlock and start cars. But that extra complexity can cause costly repairs when one of them fails.
It's good to know that a majority of fobs are powered by flat watch-style batteries, which can be replaced at home. It is possible that a simple reset is enough to bring your fob back to life.
Battery Replacement
The most common reason that a key fob doesn't work is because of a dead battery. It's easy to solve and is worth a try before you spend money on the replacement fob. Take your car to an auto parts store or hardware retailer that carries button cell batteries and pick up a replacement. You can also check your owner's manual (or in the case that you don't have one, YouTube is full of videos of people who explain how to do it) for specific instructions on opening and replacing the battery on the particular type of fob.
You'll have to gently pull apart the sides of most fobs in order to access the battery. It's usually a screwdriver or another tool with a thin, flat blade. You can put your tool into a slot on the bottom of the key fob. You may also want to keep an eye out for tiny pieces that may come loose while you work.
Install the new battery in the same way you removed the old one. The positive (+) side should face the buttons, while the opposite side is facing (-), the markings on the battery compartment.
Push a button to test the fob. If it isn't working, there might be a problem with your car that needs to be repaired or replaced by a professional.
Some key fobs require special tools to open, and the contacts inside can be fragile and susceptible to corroding. In these cases the best choice is to speak with a specialist or dealer. If you're in need of replacing a battery, try to be very gentle and adhere to the instructions specifically in the owner's manual. You might be able to find an identical battery at a big-box store or discounter, but make sure you check the owner's manual to make sure it is compatible with your car.
Replacing the Internal Key
To prevent theft, most key fobs are equipped with an electronic key inside. When the battery in the fob goes out it will leave a blank key left behind and can be used to open doors and trunks. In certain cases it is possible to start certain cars. A majority of people don't realize that they can avoid a trip to the dealership by replacing the fob's batteries. The flat watch-style batteries are used in most modern fobs. They can be found in hardware stores and auto parts stores. It is essential to choose the correct type of battery. A bad battery can cause damage to the circuitry and cause the fob to fail much earlier.
If the problem persists after replacing the battery, it may be a sign that something else is going on with your vehicle. If you have an owner's manual look for you can use a reset procedure to restore the fob's original programming. If this doesn't work, you'll have go to a dealer or independent shop that specializes vehicle-security systems and key fob programming.
Fobs can also malfunction because of faulty transmitter receivers. These are usually built into the dashboard or near the steering wheel, and they send signals that allow you to unlock and start your car with the fob. It is possible that you will need to get closer to the car to enable it.
A professional might have to open the case of the fob to replace the transmitter. A simple screwdriver can usually work, however certain fobs require a special tool or equipment that can only be purchased at a dealership. It's a good idea to have a certified mechanic handle this job to ensure you don't accidentally break the fob or injure yourself.
Reprogramming the Key
A key fob that is not functioning just requires a new battery. These batteries are easily found in home improvement and pharmacy stores and are inexpensive. This is a good option to begin before purchasing a new key fob.
You can also reprogram your key fob on your own if you follow the steps below. The procedure may differ for different automobiles, so read the owner's manual and research the model you have. One key fob could require the ignition to be on when programming. Another might need the key to be removed and inserted repeatedly.
The general procedure is very simple. Make sure the battery is securely in place. Close all doors, with the exception of the driver's door. This will ensure the new key is communicating with the vehicle correctly. Then, place the old key back in the ignition and turn it on to the ON position, but do not start the engine. Press the lock button while aiming the fob towards the receiver for transmission. This is usually located on the left side, just above the mirror. The key will notify the vehicle within a short period of time that it's being programmed. This can be accomplished by cycling the door locks or emitting an audible chime. repair broken car key can be a tricky process, so pay attention to the timing and avoid pressing too hard the button.
If the key fob still doesn't work Try reprogramming it with new batteries. If the problem persists you should visit your dealer for your car or a locksmith should be considered. A professional locksmith will have the tools and programming equipment needed to reprogram your car's fob or clone the key if needed.
Genesky says he can usually program newer fobs for around $200-$250, depending on the model of vehicle. Genesky has experienced European models turned away because he lacks the expensive equipment required. Luckily, the majority of aftermarket fobs can be programmable but it's always best to talk to a car dealer first to see what the cost is.
Getting a New Fob
If your key fob cannot be fixed, you could need to buy another one. Based on the make and model, the dealership or an auto locksmith might be able to assist. The dealership is likely to be the most expensive option for a replacement fob, but it also has the tools and software required to program your car properly. Many independent locksmiths 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 device. Your owner's manual should outline the proper procedure for reset, which is usually just a series of button pushes that restores the original programming.
It is an excellent idea to read the owner's manual and warranty information prior to deciding where to go for the replacement of your key fob. If your car's warranty still in effect or you have an auto club or car insurance policy that covers bumper to bumper, you may qualify for a reimbursement on the cost of replacing the fob.
Finding a fob is simple enough however, finding the right location to do it isn't easy. If you own a new car and want the peace of mind that comes from knowing that your key fobs are in good condition, you might be better off going to the dealership for this service. However, if you're looking for a more affordable option, it is often possible to find a locksmith who is independent who can offer the same services at a much lower cost.
If you're not confident handling this kind of work yourself, a professional locksmith may be a good option. They are trained and equipped to replace or reprogram car key fobs of all kinds, and can do so quickly. A locksmith is also able to visit your house or office which is convenient for many. They can even cut and program keys on-site if you have lost keys, which is ideal for those who prefer not to leave their cars in the dark.