Car Key Fob Repairs Today's key fobs are more than just a way to unlock and start cars. This extra complexity can lead to expensive repair bills if it breaks. The positive side is that many fobs are equipped with flat-watch-style batteries that are easy to replace at home. You may even find that a reset will bring it back to life. Battery Replacement A dead battery is the main cause of a key fob not working. This is a simple fix, and it's worth trying before you go spending money on a new key fob. Simply drive your car to an auto parts store or hardware retailer that sells button cells and choose an alternative. You can also refer to your owner's guide (or YouTube for videos explaining how to replace the battery) to get specific instructions on how to open and replace the battery inside your fob. You'll need to gently pry away the sides of the majority of fobs to access the battery. You'll require a small flat-bladed screwdriver or another tool with a blade that is thin. You can put your tool into a notch at the bottom of the key fob. You might also want to look for small pieces that may be loosened while working. Insert the new battery the same way you removed the previous one. Make sure the positive (+) side is facing up toward the buttons and that the negative (-) side of the battery is aligned correctly with the markings in the battery compartment of your fob. You can push a button to test the fob. If it doesn't work, there could be an issue with your vehicle that requires a professional to repair or replace. Certain key fobs require specific tools to open and close, and the connections inside can be fragile and susceptible to corroding. In these situations, the best option is to speak with a specialist or dealer. When replacing a battery, be gentle and follow your owner's instructions. You may be able to locate a comparable battery at a discounter or a big-box retailer however, you'll need to check the owner's manual to ensure that it matches your car. Replacing the Internal Key Most key fobs contain a physical mechanical key however, it's hidden within the fob to stop thieves from getting. When the battery in the fob goes out, a blank key is left behind, which can be used to open doors and trunks. In some cases the key could even start certain vehicles. Most people aren't aware of this however they could avoid from a trip to the dealer by simply replacing the fob's battery. The majority of modern fobs utilize flat watch-style batteries that are readily available at hardware stores and auto parts shops. It is crucial to choose the correct kind of battery. A bad battery can damage the electronic circuitry, which can cause the battery to fail sooner. If the issue persists even after you have replaced the battery, it could be an indication that something else is wrong with your vehicle. Review the owner's manual of your vehicle to determine if you have a reset procedure that can restore the fob's factory-setup. If this fails, you'll need visit a dealership or an independent shop that specializes in security systems for vehicles and key fob programming. Fobs can also malfunction due to faulty transmitter receivers. These are usually located near the steering wheel or in the dashboard. They transmit signals that allow you to unlock your car and begin it using the fob. If you're having to get closer and closer to your car to be able to make it work, there's a good chance that the transmitter isn't working. It may be necessary for a professional to open the case of the fob in order to replace the transmitter. A simple screwdriver is usually enough to suffice, but certain fobs require a special tool or a special piece of equipment that can only be purchased at a dealership. This job must be handled by a certified mechanic in order to avoid damaging the fob as well as yourself. Reprogramming the Key A key fob that's not working may simply need a new battery. Since these batteries are inexpensive and easily available at pharmacies and home improvement stores, it's a good first step before investing in the purchase of a new car key fob. You may also be able to reprogram the fob by following some basic steps. This process can vary between automobiles, so 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. One key fob could require the key to be inserted multiple times. 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 that the new key fob can communicate with the vehicle correctly. Insert the old key into the ignition, then 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 front above the mirror. The key will inform the vehicle within a brief amount of time that it is being programmed. This can be accomplished by turning the door locks or by emitting an audible chime. This is a difficult process, so pay attention to timing and don't over-press the button. If the key fob still does not work try reprogramming it with new batteries. If the issue is still there, you might want to visit your local locksmith or dealer. A professional locksmith will have the tools and equipment needed to reprogram your car's fob, or even create a brand new one, if required. Genesky says he can usually program newer fobs for $200 to $250, based on the vehicle. He's experienced European models rejected due to the fact that there isn't the equipment needed. Luckily, the majority of aftermarket fobs can be programmed however it's recommended to consult an auto dealer first to see the price. Getting a New Fob If your key fob is simply damaged beyond repair, you could need to get an entirely new one. Depending on the brand and model, the dealer or an auto locksmith might be able to help. The dealership is likely to be the most expensive alternative for replacing a fob However, they'll have all of the necessary tools and software to program your vehicle correctly. Numerous locksmiths who are independent provide a new car key fob at the lower cost. Before you purchase an entirely new device, it is an excellent idea to try resetting your current one. The owner's guide should explain the correct reset procedure. It is typically an orderly press which restores the factory settings. It is recommended to read the owner's manual and warranty information prior to deciding which place to go for the replacement of your key fob. If your car is under warranty or you have a car-insurance policy or auto club membership that provides bumper-to-bumper protection, you may be eligible for reimbursement for the cost of an entirely new fob. Getting a fob is easy enough, but finding the right location to do it isn't easy. If you have a relatively new vehicle and you want the assurance with knowing that your key fobs are in good condition, you may be better off visiting the dealership for this service. However, if you're looking for an affordable alternative it is usually possible to find a locksmith who is independent who can provide the same service at a much lower cost. If you're not comfortable doing this kind of work yourself, a professional locksmith may be a good option. They are skilled and equipped to replace or reprogram most types of car key fobs, and often they can do it quickly. A locksmith is also able to visit your office or home which is convenient for many. They can cut and program keys on the spot in case you've lost them. This is ideal for those who do not want to leave their vehicle unattended.