Think You're Perfect For Doing Car Key Fob Repair? Try This Quiz

· 6 min read
Think You're Perfect For Doing Car Key Fob Repair? Try This Quiz

Car Key Fob Repairs

Key fobs today do a lot more than just unlock and start vehicles. However, that added complexity can result in expensive repair costs if one of them breaks.

The positive side is that many fobs have flat-watch-style batteries that are easy to replace at home. It is possible that a reset can make your device work again.

Battery Replacement

A dead battery is the most frequent cause of a key fob not working. It's simple to repair and worth a try before you spend money on a replacement fob. You can purchase an additional button cell battery at a local auto part store or hardware retailer If you own one. You can also refer to your owner's guide (or YouTube for videos explaining how to replace the battery) to find specific instructions on how to open and replace the battery inside your fob.


Most fobs have two halves that snap together -You'll need to pry the sides apart to access the battery. You'll typically need a small screwdriver or some other tool with a thin, flat blade.  how to repair car key fob g28carkeys  can wedge your tool into a notch on the bottom of the key fob. You may also want to look for small pieces that may come loose while you work.

When you have your new battery, you can insert it in the same way that you removed the old one. The positive (+) side should face the buttons and the negative (-) 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, there might be a problem with your car that needs to be fixed or replaced by a specialist.

Certain key fobs are difficult to open, and the contacts may be brittle and easily damaged. In these cases an expert in the field or the dealer will likely be your best option. If you need to replace a battery, try to be gentle and follow the instructions that are specific to the owner's manual. You may be able to locate the same battery in a big-box store or discounter, however, make sure to check your owner's guide to ensure that it's compatible with your car.

Replacing the Internal Key

To protect against theft, the majority of key fobs come with an electronic key inside. When the battery in the fob dies, it leaves an internal key blank which can open trunks and doors (and in some cases start certain cars). Most people don't know this however, they can save themselves from a trip to the dealer by simply replacing the fob battery. 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 right type of battery. A bad battery can damage the electronic circuitry and cause the fob to fail much earlier.

If you change the battery, and the issue persists it could be an indication that something else is going on with your car. If you have an owner's manual and you're not sure, try to determine if there is a reset option available to restore the fob's original programming. If this isn't working, you'll need to visit a dealership or an independent shop that specializes in vehicle-security systems and key fob programming.

Fobs can also malfunction because of faulty transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and they send signals that allow you to open and start your car with the fob. If you notice that you're required to move closer and closer to your vehicle to be able to make it work, there's a high chance that the transmitter isn't working.

It could be required for a professional to open the case of the fob in order to replace the transmitter. A simple screwdriver is enough to accomplish the task, but some fobs have complicated release mechanisms that require a special tool or equipment that is available only at a dealer. It's best to have a qualified mechanic perform this task so you don't accidentally break the fob or hurt yourself.

Reprogramming the Key

A key fob that is not functioning simply needs a fresh battery. Because they are cheap and easily available at pharmacies and home improvement stores, it's the ideal first step before purchasing 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. The procedure may differ for different vehicles, so it is recommended to read the owner's manual and study the specific model of your vehicle. One key fob could require that the ignition switch be switched on when programming. Another might need the key to be inserted and removed repeatedly.

The process is straightforward. First, make sure that the new battery is in place. Then, get in the driver's seat, and close all doors EXCEPT for the driver's side door. This will ensure the new fob is communicating with the vehicle correctly. Then, put the old key back into the ignition and turn it on to the ON position, but do not start the engine. Press the lock button while aiming the fob toward the receiver of the transmission. It is usually located on the left side, just above the mirror. The key will inform the vehicle within a short period of time that it is being programmed. This can be accomplished by turning off the door locks or emitting an audible chime. This process can be tricky so it's essential to be attentive to the timing and don't over-press the key button.

If the key fob does not work after reprogramming it, try replacing the batteries. If the issue is still there, you might want to check with your local locksmith or dealer. A professional will have the tools and programming equipment necessary to re-program your car's fob or make an entirely new key if required.

Genesky claims he is able to program newer fobs ranging from $200 and $250, depending on the vehicle. However, he's had the need to turn away customers with European models because he doesn't have the expensive equipment required. A majority of the aftermarket fobs are programmed, but you should always consult your local dealer to determine the cost.

How do I get a new fob

If your key fob is simply beyond repair, you may need to purchase a new one. Depending on the make and model, an auto locksmith or a dealership might be able to assist. The dealership is likely to be the most expensive option for a replacement fob, but it will also have the tools and software needed to program your car correctly. If you're looking for a cheaper option, a number of independent locksmiths will be able to provide you with new car keys for a much more reasonable cost.

It's a good idea to try to reset the fob you have before you make the decision to purchase a new one. Your owner's manual should outline the proper reset procedure, which is usually just the pushing of a button that restores the original programming.

It is recommended to read the owner's manual and warranty information before you decide where to go for a key fob replacement. If your car's warranty still in effect or you have an auto club or insurance policy that covers bumper-to-bumper you could qualify to receive a reimbursement for the cost of replacing the fob.

Finding the right place to get the fob you need can be difficult. If you own a new car and want the security from knowing that your key fobs are in good working condition, you may be better off going to the dealership to get this service. If you are seeking a less expensive alternative, it's possible to find a locksmith who will offer the same service for a lower price.

If you're not confident handling this kind of work yourself A professional locksmith could be a great choice. They are certified and equipped to replace or reprogram the majority of car key fobs, and often they can complete the task quickly. Locksmiths is also able to visit your office or home which is convenient for a lot of people. They can even cut and program keys on-site in case you've lost keys, which is great for those who don't like to leave their cars in the dark.