Car Key Fob Repairs

Key fobs today can do more than unlock and start vehicles. This added complexity can result in costly repairs if it breaks.

The positive side is that many fobs have flat-watch-style batteries that are easy to replace at home. And you may find that a reset will make your device work again.

Battery Replacement

The most frequent reason that a key fob doesn't work is because of the battery being dead. This is a simple repair, and is worth trying before you decide to spend money on a new key fob. Simply drive your car to an auto parts store or a hardware retailer that stocks button cell batteries and purchase the replacement. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) to get specific instructions on how to open and replace the battery in your fob.

Most fobs come with two halves that snap togetheryou'll have to gently pry the sides apart to access the battery. You'll need a small flat-bladed screwdriver or another tool with a thin blade. You can put your tool into a notch at the bottom of the key fob. You might also want to keep an eye out for small pieces that may come loose while you work.

Insert the new battery in the same manner as you removed the previous one. The positive (+) side should face the buttons, while the opposite side is facing (-) the markings on the compartment for the battery.

You can push a button to test the fob. If it doesn't work, there may be a problem with your car that needs to be repaired or replaced by a professional.

Certain key fobs require special tools to open, and the contacts inside could be fragile and susceptible to corroding. In these instances the best choice is to speak with a specialist or dealer. When replacing a battery, be gentle and follow the owner's manual. You may be able find an identical battery at a big-box retailer or Repairs discounter, but be sure you read the owner's manual to make sure it's compatible with your vehicle.

Replacing the Internal Key

To prevent theft, most key fobs have a mechanical key hidden inside. If the battery inside a fob dies it will leave a blank key left behind and can be used to open doors and trunks. In certain cases, this key can even start certain cars. Most people don't know this however, they can save themselves having to go to the dealership by simply replacing the fob battery. The flat watch-style battery is found in the majority of modern fobs. They can be found in hardware stores and auto parts stores. It is crucial to choose the right type of battery. A wrong type of battery can harm the electronic circuitry, which can cause the fob to fail sooner.

If the issue persists even after you have replaced the battery, it could be a sign that there is something else wrong in your vehicle. If you have an owner's manual look for a reset procedure is available to restore the fob's factory programming. If this fails, you'll need go to a dealer or a shop independent that specializes in vehicle-security systems and key fob programming.

Fobs could also fail because of faulty transmitter receivers. They are typically located on the dashboard or near the steering wheel, and they transmit signals that allow you to open and start your car using the fob. If you notice that you're required to move closer and closer to your vehicle to get it to work, there's a good chance that the transmitter isn't working.

It may be required for a professional to open the case of the fob to replace the transmitter. A simple screwdriver is enough to get the job done however some fobs come with complicated release mechanisms that require a specialized tool or specialized equipment that is available only at a dealership. It's best to have a qualified mechanic do this job so that you don't accidentally break the fob or injure yourself.

Reprogramming the Key

Often a non-functional key fob just requires a new battery. These batteries are readily available in pharmacy and home improvement stores and are affordable. This is a great option to begin before purchasing an entirely new key fob.

Alternately, you might be able to program the fob on your own by following the steps. This process varies between vehicle brands, so it's essential to consult your owner's manual as well as research the specifics of your particular model. For example, one key fob may require that the ignition be switched on while reprogramming the key. A key fob might require the key to be inserted several times.

The procedure is simple. First, make sure that the new battery is securely in place. Close all doors, with the exception of the driver's door. This will ensure that the new key fob can communicate with the vehicle properly. Then, put the old key back in the ignition and turn it on to the ON position, but don't start the engine. Then, press the lock button on the fob, repairs while making sure to point it towards the transmission receiver, which is usually located on the front of the vehicle above the mirror. In a short period of time the key will signal to the vehicle that it's been programmed by turning off the doors' locks or emitting the sound of a chime. This process can be tricky so it's essential to pay attention to the timing and don't over-press the key button.

If the key fob still doesn't work, try reprogramming it again with fresh batteries. If the problem persists you may want to visit your local dealer or locksmith. A professional will have the tools and equipment necessary to re-program your car key repair's fob, or create a new key if it's required.

Genesky says he can usually program newer fobs for $200-$250, based on the model of vehicle. He's experienced European models rejected because they don't have the equipment needed. A majority of the aftermarket fobs are programmed, but you should always check with your local car dealer to determine the cost.

Getting a New Fob

If your key fob cannot be fixed, you could need to buy another one. Depending on the make and model, a dealership or an auto locksmith might be able to assist. The dealership is likely to be the most expensive option to replace your fob, however, it will also have the tools and software needed to program your car properly. Many locksmiths in independent shops offer a new car key fob for a much lower price.

Before you decide to purchase an entirely new device, it is an excellent idea to try resetting your current device. The owner's manual should explain the correct procedure for reset which is typically pushing a few buttons which restores the original programming.

It's recommended to review your owner's manual and warranty information prior to deciding where to go for the replacement of your key fob. If your car is under warranty, or you have a car-insurance policy or auto club membership that provides bumper-to-bumper insurance, you might be eligible for reimbursement for the cost of an entirely new fob.

Finding the best location to purchase a fob can be difficult. You might want to go to the dealer for this service if have a newer vehicle and you want to be confident that your key fobs work properly. If you're looking for a cheaper alternative, it is possible to find a locksmith who will offer the same service for an affordable cost.

A professional locksmith is a great option for those who aren't comfortable with this type of work. They are skilled and equipped to repair or replace the majority of car key fobs, and they can often do it quickly. A locksmith is also able to visit your office or home which is a great option for a lot of people. They can even cut and program keys on the spot in case you've lost them, which is ideal for those who don't like to leave their cars in the dark.