Car Key Fob Repairs
Key fobs today do much more than unlock and start vehicles. This added complexity can result in costly repairs if it breaks.
The good news is that the majority of fobs have flat-watch-style batteries that are simple to replace at home. You may find that a simple reset is enough to make your fob work again.
Battery Replacement
The most frequent reason why that a key fob doesn't work is due to a dead battery. It's easy to repair and worth a try before you purchase the replacement fob. Simply drive your car to a local hardware or auto parts retailer that stocks button cell batteries and pick up an alternative. You can also consult your owner's guide (or YouTube for videos explaining how to replace the battery) to get specific instructions on how to remove and replace the battery in your fob.
You'll have to gently pull apart the sides of most fobs in order to access the battery. You'll usually need a small screwdriver or another tool equipped with a thin, flat blade. It may be helpful to look for a notch along the bottom of the fob which you can use to wedge your tool between. You might also want to keep an eye out for small pieces that may fall off while working.
Insert the new battery the same way you removed the old one. Make sure the positive (+) side is facing upwards toward the buttons and that the negative (-) side of the battery is aligned correctly with the marks inside the battery compartment of your fob.
Test the fob to see if it works by pushing a button. If it doesn't, there could be an issue with your car that requires a professional to repair or replace.
Certain key fobs require special tools to open, and the contacts inside can be fragile and easily corroded. In these instances an expert in the field or a dealer could be the best choice. When replacing a battery be gentle and follow your owner's manual. You may be able to locate a comparable battery at a discounter or big-box retailer, but you'll need to check the owner's manual to make sure that it's compatible with your vehicle.
Replacing the Internal Key
To guard against theft, many key fobs come with a mechanical key hidden inside. If the battery inside a fob dies and the key is discarded, a blank one is left behind, which can be used to open trunks and doors. In certain cases it is possible to start certain cars. Many people don't realize this however, they can save from a trip to the dealer by simply replacing the fob battery. Most modern fobs have flat watches-style batteries that are easy to find at hardware stores and auto parts shops. It is crucial to choose the right type of battery. A wrong battery can harm the circuitry and cause the fob to fail much earlier.
If you replace the battery and find the issue is still there, it could be a sign something else is going on with your car. If you have an owner's manual look for there is a reset option available to restore the fob's factory programming. If this doesn't work, you'll need to go to a dealership or an independent shop that specializes in vehicle security systems and fob programming.
Fobs may also malfunction due to faulty transmitter receivers. These are usually located close to the steering wheel, or in the dashboard. They transmit signals that allow you to unlock your vehicle and start it 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 possibility that the transmitter is not working.
A professional might need to open the case of the fob to replace the transmitter. A simple screwdriver will usually get the job done however, some fobs have complex release mechanisms that require a special tool or specialized equipment that is available only at a dealer. It's a good idea to have a qualified mechanic do this job so that you don't accidentally break the fob or hurt yourself.
Reprogramming the Key
A key fob that is not functioning simply needs a fresh battery. They are easily available in both pharmacy and home improvement stores and are cheap. This is a great way to start before buying a new key fob.
You can also re-program your key fob yourself by following the steps below. The process is different for different vehicles manufacturers, so it is important to consult your owner's manual and research the specifics of your model. For instance, one key fob may require that the ignition be on while reprogramming it. A key fob might require the key to be inserted several times.
The basic procedure is easy. First, make sure that the new battery is firmly in place. Then, get into the driver's seat and close all doors EXCEPT for the driver's side door. key fob repair will ensure that the new fob is communicating with the vehicle correctly. Then, place the old key back in the ignition and turn it to the ON position, but do not start the engine. Press the lock button while aiming the fob toward the transmission receiver. It is usually located on the front above the mirror. The key will signal to the vehicle within a brief amount of time that it is being programmed. This can be done by turning off the door locks, or emitting an audible chime. This process can be tricky so it's essential to be aware of the timing and to not over-press the key button.
If the key fob won't function after reprogramming, you can try using new batteries. If the issue persists, you might want to check with your car dealer or locksmith. A professional locksmith will have the tools and equipment needed to reprogram your car's fob, or create the key if needed.
Genesky says he can usually program newer fobs for around $200 to $250, based on the model of vehicle. Genesky has experienced European models turned away because there isn't the equipment needed. Fortunately, many aftermarket fobs are programmable but it's always best to check with the dealer of your choice first to see what their price is.
How do I get a brand new fob
If your key fob can't be fixed, you could require an entirely new one. Based on the model and make, an auto locksmith or dealership may be able to help. The dealership is likely to be the most expensive choice to replace your fob, but it will also have the tools and software required to program your car properly. Numerous locksmiths who are independent offer a brand new car key fob at an affordable price.
Before you purchase a new key fob, it is an excellent idea to try resetting your current device. The owner's manual will outline the correct procedure for reset which is typically pushing a few buttons that reset it to factory programming.
It's also a good idea to check your owner's manual and warranty information before deciding the best place to get an replacement fob for your key. If your vehicle's warranty is still in effect or you have an auto club or insurance policy that covers bumper to bumper, you may qualify for a reimbursement of the cost of replacing the fob.
Getting a fob is easy enough however, finding the right location to do it can be tricky. If you have a relatively new vehicle and you want the peace of mind that comes with knowing that your key fobs are in good working condition, you may be better off going to the dealership for this service. However, if you're looking for an option that is more affordable it is usually possible to find a locksmith who is independent who can offer the same services for a lower cost.
A locksmith professional is a great option If you're not confident doing this kind of work. They are certified and equipped to replace or reprogram most types of car key fobs and often they can complete the task quickly. In addition, a locksmith will often visit your workplace or home to do the job which can be extremely useful for certain people. They can even cut and program keys on the spot when you've lost keys, which is great for those who don't like to leave their cars in the dark.