Car Key Fob Repairs

Key fobs today are more than just a way to unlock and start cars. This added complexity can lead to expensive repair bills when it fails.

It's important to know that the majority of fobs are powered by flat watch-style batteries which can be easily replaced at home. It is possible that a simple reset is enough to bring your fob back to life.

Battery Replacement

A dead battery is the most frequent reason for the fob's key not working. It's easy to solve and is worth a try before you spend money on a replacement fob. Take your car to an auto parts store or a hardware retailer that carries button cell batteries and pick up a replacement. You can also consult the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to replace and open the battery inside your fob.

You'll need to gently pull off the sides of many fobs in order to access the battery. It's usually a screwdriver or some other tool that has a flat, thin blade. It's a good idea to look for a notch along the bottom of the fob which you can place your tool between. You might also want to look out for small pieces that may come loose as you work.

When you have your new battery, place it in the same way that you removed the old one. The positive (+) side should face the buttons and the reverse (-), the markings on the compartment for the battery.

Check the fob to determine if it works by pushing the button. If it doesn't work, you may have an issue with your vehicle that requires a professional to repair or replace.

Certain key fobs can be difficult to open and their contacts may be brittle and easily damaged. In these situations, a car specialist or a dealer could be the best choice. When replacing a battery, be patient and follow your owner's manual. You might be able to locate a comparable battery at a discounter or a big-box retailer however, you'll need to consult your owner's manual to ensure that it's the right one for your vehicle.

Replace the internal key

The majority of key fobs have a physical mechanical key, but it's hidden inside the fob to stop thieves from getting. When the battery in the fob goes out it will leave a blank key left behind, which can be used to unlock trunks and doors. In some cases the key could even start certain cars. A majority of people do not realize that they can avoid a trip to a dealership by recharging the fob batteries. Most modern fobs have flat watches-style batteries that are easy to find in hardware stores and auto parts shops. Choosing the right type of battery is crucial, however. A bad battery can cause damage to the circuitry and lead to the fob's failure earlier.

If the problem continues to persist after replacing the battery, it may be a sign that there is something else wrong with your vehicle. Go through the owner's manual to see if there's a reset procedure that will bring the fob back to factory programming. If this doesn't help, you'll need to visit a dealership or an independent shop that specializes in vehicle-security systems and fob programming.

Fobs could also fail due to faulty transmitter receivers. These are usually built into the dashboard or close to the steering wheel, and transmit signals that allow you to unlock and start your car using the fob. It is possible that you will need to get closer to your car to get it to work.

A professional might have to open the fob's case to replace the transmitter. A simple screwdriver can usually suffice, but certain fobs require a special tool or a special piece of equipment which can only be found at a dealer. This task should be done by a qualified mechanic to avoid damaging the fob and yourself.

Reprogramming the Key

A key fob that is not working might just need a new battery. These batteries are readily available in both pharmacy and home improvement stores and are affordable. This is a good method to start before you purchase a new key fob.

You may also be able to reprogram the fob yourself by following the steps. The procedure varies for different vehicle makes, so it's important to read the owner's manual as well as research the specifics of your model. For example, one key fob may require the ignition to be turned on while reprogramming it. Another key might require the key to be inserted and removed multiple times.

The process is straightforward. First, make sure that the new battery is firmly in place. Then, get into the driver's seat and shut all doors, excluding the driver's side door. This will ensure that the new key fob communicates with the vehicle correctly. Then, put the old key back into the ignition and switch it to the ON position, but do not start the engine. Press the lock button while aiming the fob toward the transmission receiver. This is typically located on the left side, just above the mirror. The key will signal to the vehicle within a brief amount of time that it's being programmed. This can be done by turning the door locks or emitting an audible chime. This can be a difficult process so it's essential to be aware of the timing and not to over-press the key button.

If the key fob does not work, try reprogramming it again with fresh batteries. If the issue isn't resolved then a visit to your dealer for your car or locksmiths should be considered. A professional locksmith will have the tools and equipment required to reprogram your car fob or create a new one if necessary.

Genesky says he's able to program newer fobs ranging from $200 and $250, depending on the model of vehicle. However, he's had to refuse customers with European models because they don't have the costly equipment they require. Fortunately, most aftermarket fobs are programmable, but it's always best to talk to a car dealer first to see what the cost is.

Getting a New Fob

If your key fob can't be fixed, you could require a new one. Depending on the make and model, the dealer or an auto locksmith might be able to assist. The dealership is likely to be the most expensive option for a fob replacement, but they will also have the necessary tools and software needed to program your car correctly. Many independent locksmiths offer a brand new car key fob at the lower cost.

Before you rush to get a new key fob, it is recommended to consider resetting your current device. The owner's manual should explain the correct procedure for reset which is typically pushing a few buttons that restores the original programming.

You should also look over the owner's guide and warranty information to determine whether you can obtain a replacement key fob. If your vehicle's warranty is still active or you have an auto club or insurance policy that covers bumper to bumper you could qualify for a reimbursement of the cost of replacing the fob.

Finding the best place to get the fob you need can be difficult. If you have a relatively new car and would like the assurance from knowing that your key fobs are in working condition, you may be better off going to the dealership for this service. If you're seeking a less expensive alternative, it's possible to find a locksmith who can provide the same service at a lower price.

A professional locksmith is a good option if you're not comfortable doing this kind of work. They're trained and equipped to repair or replace keys for cars of all types and do it quickly. In addition, a locksmith can often come to your workplace or home to complete the task which can be extremely useful for keys certain people. They can cut and program keys on site if you've lost keys. This is ideal for those who do not want to leave their car without a key.