Car Key Fob Repairs
Key fobs today do much more than just unlock and start vehicles. This extra complexity can lead to expensive repair bills when it fails.
The good news is that the majority of fobs have flat-watch-style batteries that are easy to replace at home. You might find that a simple reset is enough to allow your fob to function again.
Battery Replacement
The most frequent reason the key fob ceases to function is due to the battery being dead. It's a simple repair and worth a try before you purchase the replacement fob. You can pick up an additional button cell battery at a local auto part retailer or hardware store if you have one. You can also check your owner's manual (or in the event that 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 on the specific type of fob you have.
Most fobs have two halves that snap togetherYou'll need to pull the sides apart to get to the battery. It's usually a screwdriver or another tool that has a flat, thin blade. You can wedge your tool into a notch at the bottom of the key fob. It is also advisable to keep an eye out for small pieces that may be loosened while working.
Once you have your new battery, insert it in the same way that you removed the old one. The positive (+) side should be facing the buttons and the negative (-) the marks on the compartment for the battery.
Push a button to test the fob. If it doesn't work, there could be an issue with your vehicle that requires a specialist to fix or replace.
Certain key fobs require specific tools to open and close them, and the contacts inside may be delicate and easily corroded. In these situations the best solution is to speak with a specialist or a dealer. If you're looking to replace the battery, make sure to be very gentle and follow the instructions that are specific to the owner's manual. You may be able to find a similar battery at a discounter store or a big-box retailer but you'll have to consult your owner's manual to be sure that it's the right one for your vehicle.
Replacing the Internal Key
To protect against theft, the majority of key fobs have an electronic key inside. If the battery inside the fob fails it will leave a blank key left behind that can be used to unlock doors and trunks. In certain cases the key could even start certain vehicles. Most people don't realize that they can avoid a trip to the dealership by recharging the fob batteries. The flat watch-style battery is found in most modern fobs. These batteries can be found at hardware stores and auto parts stores. It is essential to choose the correct kind 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 problem persists it could be a sign that something else is happening with your vehicle. If you have an owner's manual and you're not sure, try to determine if you can use a reset procedure to restore the fob's original programming. If this doesn't work, you'll have to visit a dealership or independent shop that specializes vehicle-security systems and key fob programming.
Fobs can also malfunction because of faulty transmitter receivers. They are usually found 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. It is possible that you will need to get closer to the car in order to enable it.
A professional may need to open the fob's case to replace the transmitter. A simple screwdriver will usually suffice, but some fobs require a specialized tool or equipment which can only be found at a dealer. This task must be handled by a qualified mechanic to avoid damaging the fob as well as yourself.
Reprogramming the Key
A key fob that is not functioning simply 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 buying an entirely new car key fob.
Alternatively, you may be able to re-program the fob by following a few basic steps. The procedure may differ for different automobiles, so consult your owner's guide and study the specific model of your vehicle. For key repair might require that the ignition be switched on while reprogramming the key. Another may require the key to be removed and inserted several times.
The general process is simple. 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 and turn it ON, but do not start the engine. Next, press the lock button on the fob while making sure to point it towards the transmission receiver, which is usually located in the front of the vehicle 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 by emitting an audible chime. This procedure can be difficult and it's crucial to pay attention to the timing and to not over-press the key button.
If the key fob doesn't work after reprogramming, try using a new battery. If the problem persists, a visit to the dealer of your vehicle or locksmiths should be considered. A professional locksmith will have the tools and equipment required to reprogram your car's fob, or even create a brand new one if needed.
Genesky says he's able to program newer fobs at around $200-$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. Fortunately, many aftermarket fobs can be programmed but it's always best to check with the dealer of your choice first to see the price.
Finding a New Fob
If your key fob is beyond repair, you might require a new one. Based on the make and model, a dealership or an auto locksmith may be able to assist. The dealership is likely to be the most expensive option for a replacement fob, but they will also have the necessary tools and software to programme your vehicle properly. For a more affordable option, a number of independent locksmiths can offer you new car keys at a lower price.
It's a good idea to attempt to reset the fob you have before you decide to buy another one. Your owner's manual should outline the proper procedure for reset that is typically the pushing of a button that reset it to factory programming.
It's recommended to review your owner's manual and warranty information before you decide the best place to get a key fob replacement. If your car is under warranty, or you have a car-insurance policy or auto club membership that provides bumper-to-bumper coverage, you may be eligible to receive a reimbursement for the cost of the new fob.
Finding a fob is simple enough however finding the best location to get it done isn't easy. If you own a new vehicle and you want the security with knowing that your key fobs are in working condition, you might be better off going to the dealership for this service. If you are looking for a more affordable alternative, it is possible to find a locksmith who will provide the same service for less cost.
If you aren't comfortable handling this type of work on your own, a professional locksmith may be a good option. They are certified and equipped to repair or replace most types of car key fobs, and they can often accomplish the task in a short time. In addition, a locksmith is often able to come to your office or home to do the job, which can be very practical for some. They can cut keys and program them on site if you've lost them. This is great for those who don't want to leave their car unattended.