Car Key Fob Repairs
Key fobs today do much more than unlock and start vehicles. This extra complexity can result in costly repairs in the event that it malfunctions.
The good news is that most fobs have flat-watch-style batteries that are easy to replace at home. It is possible that a simple reset will allow your fob to function again.
Battery Replacement

The most frequent reason that a key fob doesn't work is because of the battery being dead. It's simple to repair and worth a try before you purchase an alternative fob. You can buy an additional button cell battery at your local auto part retailer or hardware store in the event that you already have one. You can also consult 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.
The majority of fobs have two halves that snap togetheryou'll have to gently pry the sides apart to access the battery. It's usually a screwdriver or some other tool equipped with a thin, flat blade. You can put your tool into a notch on the bottom of the key fob. You might also want to look for small pieces that may come loose while you work.
Insert the new battery in the same manner as you removed the previous one. Make sure that the positive (+) side is facing up towards the buttons, and that the negative (-) side of the battery is aligned with the markings inside the battery compartment of your fob.
Check the fob to determine whether it is working by pressing a button. If it doesn't work, there might be a problem with your car that needs to be fixed or replaced by a professional.
Some key fobs require special tools to open and close, and the connections inside could be fragile and easily corroded. In these cases an expert in the field or a dealer could be your best option. When replacing a battery be patient and follow your owner's instructions. You may be able find an identical battery at a big-box retailer or discounter, but make sure to check the owner's manual to make sure it is compatible with your car.
Replacing the Internal Key
The majority of key fobs have the physical key mechanical however, it's hidden within the fob to keep it from being stolen. If the battery inside the fob fails, a blank key is left behind that can be used to open doors and trunks. In certain cases, this key can even start certain vehicles. Most people don't know this however they could save themselves a trip to the dealership by simply replacing the fob's battery. The flat watch-style batteries are used in most modern fobs. These batteries can be found in hardware stores and auto parts stores. Using the correct type of battery is important, however. A bad battery can cause damage to the circuitry and cause the fob's failure much sooner.
If you change the battery and find the issue is still there, it could be an indication that something else is going on with your vehicle. Go through the owner's manual to determine if you have a reset procedure that will restore the fob's factory-setup. If this doesn't work, you'll have visit a dealership or independent shop that specializes security systems for vehicles and key fob programming.
Fobs can also malfunction because of faulty transmitter receivers. They are typically located close to the steering wheel or on the dashboard. They transmit signals to enable you to unlock your car and begin it using the fob. If you notice that you're required to move closer and closer to your car to get it to work, there's a high chance the transmitter is failing.
It could be required for a professional to access the case of the fob to replace the transmitter. A simple screwdriver is usually enough to do the trick, but certain fobs require a special tool or special equipment that can only be found 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
Most of the time, a key fob that isn't working just requires a new battery. Since these batteries are inexpensive and readily available in pharmacies and home improvement stores, it's an excellent first step prior to investing in a new car key fob.
You can also change the programming of your key fob yourself if you follow the steps below. This process can vary between vehicles, so it is recommended to consult your owner's guide and research the model you have. For example the key fob might require that the ignition be turned on while reprogramming it. Another key might require the key to be inserted and removed several times.
The general procedure is very simple. First, ensure that the new battery is securely in place. Then, get in the driver's seat and shut all doors, with the exception of the driver's side door. This will ensure that the new key is communicating with the vehicle properly. Then, place the old key back into the ignition and turn it on to the ON position, but do not 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 vehicle above the mirror. In a short period of time the key will announce to the vehicle that it's been programmed by cycling the doors' locks or emitting a chime. This is a difficult 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 a new battery. If the problem persists you might want to check with your local dealer or locksmith. A professional locksmith will have the tools and programming equipment necessary to re-program your car's fob or make an entirely new key if needed.
Genesky says he can usually program newer fobs for $200-$250, depending on the model of vehicle. However, he's had to turn down customers who have European models due to the fact that he doesn't have the expensive equipment required. Luckily, the majority of aftermarket fobs can be programmed however it's recommended to consult an auto dealer first to see the price.
How do I get a new fob
If your key fob is beyond repair, you might need to get a new one. Depending on your vehicle's model and make, an auto locksmith or dealership may be able help. The dealership is likely to be the most expensive option for a replacement fob, however, it will also have the tools and software necessary to program your car properly. Many independent locksmiths offer a brand new car key fob at the lower cost.
It's a good idea to attempt to reset your current fob before you rush out to buy another one. Your owner's manual should outline the proper procedure for reset that is typically a series of button pushes that reset the original programming.
G28 Car Keys should also look over the owner's manual and warranty information to determine whether you are eligible for an alternative fob for your key. If your car is under warranty, or you have a car insurance policy or auto club membership with bumper-to-bumper insurance, you might be eligible to receive a reimbursement for the cost of an entirely new fob.
Finding the best where to purchase the fob you need can be difficult. If you have a relatively new car and would like the assurance with knowing that your key fobs are in good working condition, you might be better off going to the dealership to get this service. If you're looking for a cheaper alternative, it is possible to find a locksmith who can provide the same service for an affordable cost.
A professional locksmith is a good option If you're not confident doing this type of work. They're trained and equipped to replace or reprogram car key fobs of all kinds and can do it quickly. Locksmiths is also able to visit your house or office which is convenient for many. They can even cut and program keys on the spot in case you've lost keys, which is ideal for those who prefer not to leave their cars unattended.