The 10 Most Terrifying Things About Car Key Fob Repair

· 6 min read
The 10 Most Terrifying Things About Car Key Fob Repair

Car Key Fob Repairs

Key fobs today do a lot more than unlock and start vehicles. But that extra complexity can result in high repair bills if one of them breaks.

car key repair  to know that the majority of fobs are powered by flat-watch-style batteries which can be replaced at home. And you may find that a reset can bring it back to life.

Battery Replacement

A dead battery is the main reason for a key fob not working. It's a simple fix and worth trying before you invest in a replacement fob. You can purchase an additional button cell battery at your local auto parts retailer or hardware store in the event that you already have one. 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 who show you 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 to access the battery. You'll typically need a small screwdriver or some other tool with a thin, flat blade. You can wedge your tool into a slot on the bottom of the key fob. It is also advisable to look out for small pieces that might break loose while working.

When you have your new battery, you can insert it in the same manner that you removed the old one. Make sure the positive (+) side is facing up towards 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 the button. If it doesn't work, there could be a problem in your vehicle that needs to be repaired or replaced by a professional.


Some key fobs are difficult to open and their contacts could be fragile and easily corrosion-prone. In these situations the best choice is to speak with a expert or a dealer. When replacing a battery be patient and follow your owner's instructions. You may be able to locate a comparable battery at a discounter or a big-box retailer, but you'll need to check the owner's manual to make sure that it matches your car.

Replace the internal key

The majority of key fobs have an actual mechanical key, but it's hidden inside the fob to keep it from being stolen. When the battery in a fob dies it will leave a blank key left behind and can be used to unlock doors and trunks. In some cases, this key can even start certain cars. The majority of people do not realize that they can avoid a trip to a dealership by replacing the fob's batteries. The flat watch-style battery is found in the majority of modern fobs. These batteries are easily located at hardware and auto parts stores. Using the correct type of battery is crucial, however. The wrong kind can damage the electronic circuitry, causing the fob to fail much earlier.

If the issue persists even after you have replaced the battery, it may be an indication that there is something else wrong in your vehicle. Review the owner's manual of your vehicle to determine if there's a reset procedure that can bring the fob back to factory programming. If this fails, you'll need to visit a dealership or independent shop that specializes security systems for vehicles and key fob programming.

Fobs can also fail due to malfunctioning transmitter receivers. They are typically located close to the steering wheel or in the dashboard. They transmit signals to allow you to unlock your car and begin it using the fob. You may need to get closer to the car in order to enable it.

It could be required for a professional to remove the case of the fob to replace the transmitter. A simple screwdriver will usually work, however some fobs require a specialized tool or special equipment that can only be found at a dealer. This task should be done by a certified mechanic to avoid damaging the fob as well as yourself.

Reprogramming the Key

A key fob that is not functioning simply requires a new battery. Because these batteries are cheap and easily available at pharmacies and home improvement stores, this is the ideal first step before purchasing an entirely new car key fob.

You can also re-program your key fob by yourself by following a few basic steps. This process can vary between automobiles, so refer to the owner's manual and study the specific model of your vehicle. For example the key fob might require the ignition to be on while reprogramming it. Another key might require the key to be inserted and removed several times.

The general procedure is very easy. First, ensure that the new battery is firmly in place. Close all doors, with the exception of the driver's door. This will ensure the new fob is communicating with the vehicle correctly. Put the old key in the ignition and turn it on, but do not start the engine. Press the lock button while aiming the fob toward the receiver for transmission. It is usually located on the left side, just above the mirror. Within a short time frame the key will announce to the vehicle that it's being programmed by triggering the doors' locks or generating an emitted sound. 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 won't function after reprogramming, you can try using new batteries. If the problem persists you might want to visit your local dealer or locksmith. A professional locksmith will have the tools and equipment to reprogram the car fob, or even create a brand new one if needed.

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

How to get a new fob

If the key fob you have cannot be repaired, you may require a new one. Depending on the brand 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 required to program your car properly. If you're looking for a cheaper solution, a variety of locksmiths will be able to provide you with new car keys for a much more reasonable price.

It's a good idea to try to reset your current fob before you decide to buy another one. The owner's manual will outline the proper procedure for reset which is typically the pushing of a button that reset it to factory programming.

It is recommended to review your owner's manual as well as warranty information before deciding where to go for the replacement of your key fob. If your car is still under warranty or you have a car-insurance policy or auto club membership that provides bumper-to-bumper protection, you may be able to receive some reimbursement for the cost of a new fob.

Getting a fob is easy enough, but finding the right place to have it done isn't easy. If you have a relatively new car and want the assurance with knowing that your keys fobs are in good condition, you may be better off going to the dealership to get this service. However, if you want an affordable alternative it is usually possible to find an independent locksmith who can provide the same services at a much lower cost.

A professional locksmith is a great option If you're not confident doing this type of work. They are equipped and trained to repair or replace car key fobs of all types and can do it quickly. Locksmiths is also able to visit your office or home which is a great option for many people. They can cut keys and program them on the spot if you've lost them. This is great for those who do not like to leave their car unattended.