Car Key Fob Repairs

Today's key fobs are more than just a way to unlock and start cars. However, the added complexity could cause expensive repair costs in the event that one of them malfunctions.

The positive side is that many fobs have flat-watch-style batteries that are simple to replace at home. You might find that a simple reset is enough to make your fob work again.

Battery Replacement

The most common reason the key fob ceases to function is due to the battery being dead. It's a simple fix, and it's worth a try before you spend money on a new fob. Simply drive your car to a local auto parts store or a hardware retailer that stocks button cell batteries and pick up an alternative. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to remove and replace the battery inside your fob.

You'll need to gently pull off the sides of many fobs to reach the battery. It's usually a screwdriver or a different tool that has a flat, thin blade. You can put your tool into a notch at the bottom of the key fob. You may also want to be on the lookout for small pieces that could come loose while you work.

Once you have the new battery, insert it in the same manner that you removed the previous one. The positive (+) side should be facing the buttons, while the opposite side is facing (-) the marks on the compartment for the battery.

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 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 instances the best solution is to talk to a specialist or dealer. If you're looking to replace batteries, you should be gentle and follow the specific instructions in the owner's manual. You may be able to find a similar battery at a discounter or big-box retailer however, you'll need to consult your owner's manual to be sure that it matches your car.

Replacing the Internal Key

To guard against theft, many key fobs are equipped with an internal mechanical key that is hidden within. When the fob battery dies it leaves behind a blank internal key which can open doors and trunks (and in some cases, even start certain vehicles). A majority of people don't realize that they can save a trip to a dealership by recharging the fob batteries. The majority of modern fobs utilize flat-watch-style batteries which are easy to find at hardware stores and auto parts shops. It is important to use the correct kind of battery. A wrong battery can harm the circuitry and cause the fob's failure much sooner.

If you replace the battery, and the issue is still there it could be an indication that something else is happening with your car. If you have an owner's guide, check to see if a reset procedure is available to restore the fob's factory programming. If this isn't working, you'll need go to a dealer or an independent shop that specializes in vehicle-security systems and key fob programming.

Fobs may also malfunction due to faulty transmitter receivers. These are usually located near the steering wheel or in the dashboard. They transmit signals that enable you to unlock your car and begin it 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 chance that the transmitter isn't working.

A professional may need to open the case of the fob to replace the transmitter. A simple screwdriver will usually do the trick, but certain fobs require a special tool or equipment that can only be found at a dealership. This job should be performed by a qualified mechanic to avoid damaging the fob as well as yourself.

Reprogramming the Key

A key fob that is not working could just require a new battery. These batteries are easily found in home improvement and pharmacy stores and are affordable. This is a good method to start before you purchase a new key fob.

You can also re-program your key fob yourself by following a few basic steps. This process varies between vehicle makes, so it's important to read the owner's manual and research the specifics of the model you own. For example one key fob could require that the ignition be turned on while reprogramming it. One key fob could require the key to be inserted 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 that the new key fob communicates with the vehicle in a proper manner. After that, put the old key repair service back in the ignition and turn it on to the ON position, but don't start the engine. Press the lock button while aiming the fob towards the transmission receiver. This is typically located on the left side, just above the mirror. The key will inform the vehicle within a short amount of time that it is being programmed. This can be done by cycling the door locks or by emitting an audible chime. This is a challenging process, so pay attention to the timing and don't press too hard the button.

If the key fob does not function after reprogramming, you can try replacing the batteries. If the problem persists you may want to visit your car dealer or locksmith. A professional will have the tools and programming equipment to reprogram your car's fob, or create an entirely new key if needed.

Genesky says he's able to program newer fobs ranging from $200 and $250, depending on the model of vehicle. Genesky has been denied European models turned away because they don't have the equipment needed. Fortunately, many aftermarket fobs can be programmed but it's always recommended to consult the dealer of your choice first to determine what the cost is.

How do I get a new fob

If your key fob is simply beyond repair, you may need to get a new one. Depending on your vehicle's make and model, an auto locksmith or dealership may be able help. The dealership is likely to be the most expensive choice for a replacement fob, but it will also have the tools and software necessary to program your car correctly. For a more affordable solution, many independent locksmiths can provide you with new car keys for a much more reasonable price.

It is a good thing to try to reset the fob you have before you make the decision to purchase an entirely new one. The owner's manual should provide the correct procedure for reset. This is usually a series button presses which restores the factory settings.

You should also check the owner's manual and warranty information to see whether you can obtain an alternative fob for your key. If your vehicle is under warranty, or you have a car-insurance policy or auto club membership that includes bumper-to-bumper coverage, you may be able to receive some reimbursement for the cost of the new fob.

Getting a fob is easy enough however finding the best place to have it done can be tricky. If you own a new vehicle and you want the security with knowing that your keys fobs are in working order, you may be better off visiting the dealership for this service. If you're seeking a less expensive alternative, it is possible to find a locksmith that can provide the same service at a lower price.

If you aren't comfortable handling this type of work on your own, a professional locksmith may be a great choice. They are trained and equipped to change or reprogram key fobs for cars of all kinds, and can do so quickly. Additionally, locksmiths will often visit your office or home to complete the task which can be extremely convenient for some people. They can even cut and program keys on the spot if you have lost keys, which is great for those who don't like to leave their cars unattended.