Car Key Fob Repairs

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

The good news is that most fobs are equipped with flat-watch-style batteries that are easy to replace at home. It is possible that a reset can bring it back to life.

Battery Replacement

The most common reason that a key fob doesn't work is due to an inoperative battery. It's a simple fix and worth trying before you invest in an alternative fob. Simply drive your car to a local hardware or auto parts retailer that sells button cell batteries and pick up an alternative. 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 on opening and replacing the battery in your particular type of fob.

You'll need to gently pry apart the sides of most fobs in order to access the battery. You'll usually need a small screwdriver or some other tool that has a flat, thin blade. You can put your tool into a notch at the bottom of the key fob. You might also want to look for small pieces that may be loosened while working.

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

Press a button to test the fob. If it doesn't, there could be an issue with your car that requires a specialist to repair or replace.

Certain key fobs are difficult to open and their contacts could be fragile and easily corroded. In these instances, the best option is to consult a car key repair service expert or a dealer. If you're looking to replace batteries, you should be very gentle and follow the specific instructions in the owner's manual. You might be able to locate a comparable battery at a discounter or big-box retailer, but you'll need to consult your owner's manual to be sure that it's the right one for your vehicle.

Replace the internal key

The majority of key fobs have a physical mechanical key that is hidden within the fob to keep it from being stolen. If the battery inside the fob goes out and the key is discarded, a blank one is left behind, which can be used to unlock doors and trunks. In some cases, this key can even start certain vehicles. Many people don't realize this however, they can save themselves having to go to the dealership by simply replacing the fob battery. Most modern fobs use flat-watch-style batteries which are easy to find at auto parts stores and hardware shops. Choosing the right type of battery is important, however. A bad battery can cause damage to the circuitry, causing the fob's failure much sooner.

If the problem continues to persist after replacing the battery, it may be an indication that something else is wrong in 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 dealer or an independent shop that is specialized in vehicle security systems and fob programming.

Fobs can also malfunction due to malfunctioning transmitter receivers. These are usually built into the dashboard or near the steering wheel, and they transmit signals that allow you to open and start your car with the fob. You may have to move closer to the car to make it work.

A professional might need to open the fob's case to replace the transmitter. A simple screwdriver will usually get the job done however some fobs come with complicated release mechanisms that require a specialized tool or equipment that is available only through a dealer. This task should be performed by a certified mechanic in order to ensure that the fob is not damaged and yourself.

Reprogramming the Key

A key fob that is not functioning just requires a new battery. Because they are cheap and readily available at pharmacies and home improvement stores, it's the ideal first step before purchasing an entirely new car key fob.

Alternatively, you may be able to re-program the fob on your own by following a few basic steps. This process can vary between vehicles, so it is recommended to read the owner's manual and research the model you have. For instance the key fob might require the ignition to be on while reprogramming it. Another may require the key to be inserted and removed repeatedly.

The general procedure is very simple. Make sure that the battery is securely in place. Then, get in the driver's seat, and close all doors, excluding the driver's side door. This will ensure that the new fob is communicating with the vehicle properly. Place the old key in the ignition and turn it ON however, don't start the engine. Press the lock button while aiming the fob at the transmission receiver. This is usually located on the front above the mirror. The key will signal to the vehicle within a brief amount of time that it is being programmed. This can be accomplished by turning off the door locks, or emitting an audible chime. This is a challenging process, so pay attention to timing and don't over-press the button.

If the key fob does not function after reprogramming, you can try using a new battery. If the problem persists you should visit your car dealer or locksmiths should be considered. A professional will have all the tools and equipment needed to reprogram the car fob, or even create a brand new one if necessary.

Genesky claims he is able to program newer fobs between $200 and $250, depending on the model of vehicle. But he's had to turn down customers who have European models due to the fact that he doesn't have the expensive equipment they require. Fortunately, most aftermarket fobs can be programmed however it's best to talk to an auto dealer first to see the price.

A New Fob

If your key repair fob is simply beyond repair, you might require an alternative. Depending on the make and model, the dealer or an auto locksmith may be able to help. The dealership is likely to be the most expensive choice to replace your fob, but it also has the tools and software needed to program your car key repair properly. Numerous locksmiths who are independent offer a brand new car key fob for an affordable price.

Before you purchase an entirely new device it's recommended to consider resetting your current device. The owner's manual should explain the proper reset procedure which is typically the pushing of a button that restores the original programming.

You should also look over your owner's guide and warranty information to see whether you can obtain an alternative 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 to receive a reimbursement for the cost of a new fob.

The process of getting a fob can be simple enough however, finding the right location to get it done isn't easy. If you own a new car and would like the security with knowing that your keys fobs are in good working condition, you might prefer going to the dealership for this service. However, if you want a more affordable option it is possible to find a locksmith independent who can offer the same services for a significantly lower price.

If you aren't comfortable handling this type of work yourself, a professional locksmith may be a good option. They are equipped and trained to change or reprogram key fobs for cars of all kinds and can do it quickly. A locksmith can also visit your house or office, which is convenient for many. They can even cut and program keys on the spot if you have lost keys, which is ideal for those who do not want to leave their cars unattended.