10 Wrong Answers To Common Car Key Fob Repair Questions: Do You Know Which Ones?

· 6 min read
10 Wrong Answers To Common Car Key Fob Repair Questions: Do You Know Which Ones?

Car Key Fob Repairs

Key fobs today do much more than simply unlock and start vehicles. This added complexity could result in costly repairs when it fails.

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

Battery Replacement

A dead battery is the most frequent reason for the fob's key not working. This is easy to fix, and it's worth trying before you decide to spend money on a new fob. Simply take your car to an auto parts store or hardware retailer that carries button cell batteries and pick up a replacement. You can also check the owner's manual (or in the case that you don't have one, YouTube is full of videos from people explaining how to do it) for specific instructions for opening and replacing the battery on the specific type of fob you have.

You'll need to gently pry off the sides of many fobs in order to access the battery. You'll typically need a small screwdriver or a different tool with a thin, flat blade. It might help to look for a notch along the lower edge of the fob that you can use to put your tool in between. You might also want to keep an eye out for small pieces that might break loose while working.

Install the new battery in the same manner as you removed the previous one. Make sure the positive (+) side is facing upwards toward the buttons and that the negative (-) side of the battery is aligned correctly with the marks inside the battery compartment of your fob.

Test the fob to see whether it is working by pressing a button. If it doesn't work, you might have an issue with your vehicle that requires a specialist to fix or replace.

Certain key fobs can be difficult to open and the contacts may be brittle and easily damaged. In these situations, the best option is to speak with a expert or dealer. When replacing a battery, be gentle and follow the owner's manual. You may be able find a battery similar in a big-box store or discounter, however, make sure you read the owner's manual to make sure it's compatible with your vehicle.

Replace the internal key

To prevent theft, most key fobs come with a mechanical key hidden inside. When the battery in the fob dies it will leave behind a blank internal key that can unlock doors and trunks (and in some cases, even start certain vehicles). Most people don't realize that they can avoid a trip to a dealership by recharging the fob batteries. The flat watch-style battery is found in the majority of modern fobs. These batteries can be located at auto parts stores and hardware stores. It is important to use the correct type of battery. A wrong battery can harm the circuitry, causing the fob's failure much sooner.

If you replace the battery and discover that the issue persists it could be a sign something else is going on in your vehicle. Review the owner's manual of your vehicle to see if there's a reset procedure that will bring the fob back to the factory program. If this isn't working, you'll need go to a dealer or a shop independent that specializes in vehicle-security systems and key fob programming.

Fobs can also fail because of faulty transmitter receivers. These are usually built into the dashboard or close to the steering wheel, and they send signals that allow you to open and start your car with the fob. You may have to move closer to your car to get it to work.

It may be required for a professional to access the case of the fob in order to replace the transmitter. A simple screwdriver can usually suffice, but some fobs require a specialized tool or special equipment that can only be found at a dealer. It's best to have a certified mechanic perform this task so you don't accidentally break the fob or cause injury to yourself.

Reprogramming the Key

Most of the time, a key fob that isn't working simply needs a fresh battery. Since these batteries are inexpensive and readily available in pharmacies and home improvement stores, it's a good first step before investing in the purchase of a new car key fob.

You can also change the programming of your key fob by yourself If you follow a few basic steps. This process can vary between automobiles, so read the owner's manual and research your specific model. For instance one key fob could require the ignition to be switched on while reprogramming the key. One key fob may require the key to be inserted several times.

The basic procedure is simple. Make sure that the battery is securely in place. Close all doors, except the driver's door. This will ensure that the new key is communicating with the vehicle in a correct manner. Put the old key in the ignition, turn it on but don't start the engine. Next, press the lock button on the fob, while making sure to point it towards the transmission receiver, which is typically located on the front of the car above the mirror. Within a brief time the key will announce to the vehicle that it's being programmed by turning off the doors' locks or emitting the sound of a chime. This can be a tricky procedure, so pay attention to the timing and don't press too hard the button.

If the key fob does not work after reprogramming, try replacing the batteries. If the issue isn't resolved, a visit to the dealer of your vehicle or a locksmith should be considered. A professional locksmith will have the tools and equipment required to reprogram the car fob or design a new one if necessary.

Genesky claims he is able to program newer fobs that range between $200 and $250, depending on the vehicle. But he's had to turn down customers who have European models because they don't have the costly equipment required. Most aftermarket fobs can be programmed, but always check with your local dealer to determine the cost.

A New Fob

If your key fob is simply beyond repair, you may require a new one. Depending on the brand and model, the dealership or an auto locksmith might be able to assist.  repair broken car key  will likely be the most expensive option for a replacement fob however, they'll have the necessary tools and software to program your car correctly. If you're looking for a cheaper solution, a variety of locksmiths can offer you a brand-new car key fob for a much more reasonable price.

It's a good idea to attempt to reset your current fob before you make the decision to purchase another one. The owner's manual should explain the proper procedure for reset which is typically the pushing of a button that restores the original programming.

It is recommended to review the owner's manual and warranty information prior to deciding which place to go for an replacement fob for your key. If your car'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 of the cost of a replacement fob.


The process of getting a fob can be simple enough however finding the best location to get it done isn't easy. It is possible to go to the dealer to get this service if you are driving a brand new car and want peace of mind knowing that your keyfobs are working correctly. If you're looking for a more affordable alternative, it's possible to find a locksmith who will provide the same service at a lower price.

A locksmith who is professional is a good option If you're not confident doing this kind of work. They're trained and equipped to change or reprogram keys for cars of all types, and can do so quickly. In addition, a locksmith is often able to come to your office or home to complete the task which can be extremely useful for certain people. They can even cut and program keys on the spot if you have lost keys, which is great for those who prefer not to leave their vehicles unattended.