Car Key Fob Repairs
Key fobs today can do much more than simply unlock and start vehicles. This added complexity can cause costly repair costs in the event that it malfunctions.
The good news is that the majority of fobs are equipped with flat-watch-style batteries that are simple to replace at home. And G28 Car Keys may find that a reset can bring it back to life.
Battery Replacement
The most frequent reason why a key fob stops working is due to the battery being dead. This is easy to repair, and is worth a try before you spend money on a new key fob. Take your car to an auto parts store or hardware retailer that carries button cells and choose the replacement. You can also check your owner's manual (or, if 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 in the particular type of fob.
Most fobs have two halves that snap together- you'll need to gently pry the sides apart to get to the battery. You'll usually need a small screwdriver or some other tool that has a flat, thin blade. It might help to look for a notch along the bottom of the fob that you can use to wedge your tool between. You may also want to watch out for tiny pieces that could break loose while working.

When you have your new battery, you can insert it in the same way that you removed the old one. The positive (+) side should be facing the buttons and the negative (-) the markings on the battery compartment.
Test the fob to see if it works by pushing a button. If it fails, it could be a problem in your vehicle that needs to be fixed or replaced by a specialist.
Certain key fobs are difficult to open and the contacts may be fragile and easily corroded. In these cases an expert in the field or a dealer could be the best option. If you're in need of replacing batteries, you should be very gentle and follow the instructions that are specific to your owner's manual. You may be able to locate the same battery at a big-box store or discounter, however, make sure you check the owner's manual to ensure that it's compatible with your car.
Replacing the Internal Key
Most key fobs contain an actual mechanical key however, it's hidden within the fob to keep it from being stolen. If the battery of the fob fails it will leave behind a blank internal key that can unlock trunks and doors (and in some cases start certain cars). The majority of people don't realize that they can save a trip to a dealership by replacing the fob's batteries. Most modern fobs have flat-watch-style batteries which are readily available at auto parts stores and hardware shops. It is essential to choose the correct kind of battery. A wrong type of battery can harm the electronic circuitry and cause the fob to fail much sooner.
If you try replacing the battery and find the problem persists it could be an indication that something else is happening with your vehicle. Review the owner's manual of your vehicle to see if there's a reset procedure that can restore the fob to factory programming. If this doesn't work, you'll have to visit a dealership or an independent shop that specializes in security systems for vehicles and key fob programming.
Fobs may also malfunction because of faulty transmitter receivers. They are typically located on the dashboard or next to the steering wheel, and transmit signals that allow you to open and start your car using the fob. If 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 fob's case to replace the transmitter. A simple screwdriver will usually suffice, but certain fobs require a specific tool or special equipment that can only be found at a dealer. It's a good idea to have a certified mechanic handle this job to ensure you don't accidentally break the fob or hurt yourself.
Reprogramming the Key
A key fob that is not functioning just requires a new battery. Since these batteries are inexpensive and readily available at pharmacies and home improvement stores, it's a good first step before investing in the purchase of a new car key fob.
Alternatively, you may be able to reprogram the fob by following a few basic steps. This process can vary between automobiles, so consult your owner's guide and research the model you have. For example one key fob could require the ignition to be on while reprogramming it. Another may require the key to be inserted and removed several times.
The basic procedure is easy. First, ensure that the new battery is in place. Close all doors except the driver's door. This will ensure the new fob is communicating with the vehicle correctly. Insert the old key into the ignition, turn it ON however, don't start the engine. Press the lock button while aiming the fob at the receiver of the transmission. This is usually located on the left side, just above the mirror. The key will notify the vehicle within a brief amount of time that it's being programmed. This can be done by turning the door locks or by emitting an audible chime. This procedure can be difficult so it's essential to pay attention to the timing and to not over-press the key button.
If the key fob doesn't work Try reprogramming it with fresh batteries. If the issue is still there, you might want to visit your local dealer or locksmith. A professional will have the tools and equipment necessary to re-program your car's fob, or create the key if required.
Genesky says he's able to program newer fobs that range between $200 and $250, based on the vehicle. However, he's had the need to turn away customers with European models due to the fact that they don't have the costly equipment they require. Most aftermarket fobs can be programmed, but always check with your local dealer to find out the cost.
How do I get a brand new fob
If your key fob is simply damaged beyond repair, you could need to get a new one. Based on the make and model, the dealership or an auto locksmith may be able to assist. The dealership is likely to be the most expensive option for a replacement fob however, it will also have the tools and software required to program your car correctly. Many locksmiths in independent shops provide a new car key fob for the lower cost.
Before you rush to get a new key fob it's recommended to consider resetting your current one. The owner's manual will outline the proper procedure for reset, which is usually just the pushing of a button that restores it to factory programming.
It is recommended to read your owner's manual and warranty information before deciding which place to go for a key fob replacement. If your vehicle's warranty is still in effect or you have an auto club or car insurance policy that covers bumper-to-bumper you could qualify for a reimbursement on the cost of replacing the fob.
Finding the right where to purchase a fob can be a challenge. If you own a new vehicle and you want the security with knowing that your key fobs are in good condition, you might be better off going to the dealership for this service. However, if you want an affordable alternative it is possible to find a locksmith independent who can provide the same service for a significantly lower price.
A professional locksmith is a good option If you're not confident doing this type of work. They are trained and equipped to repair or replace car key fobs of all kinds, and can do so quickly. Locksmiths can also come to your house or office which is a great option for many people. They can even cut and program keys on-site in case you've lost keys, which is great for those who don't like to leave their cars in the dark.