17 Signs To Know You Work With Car Key Fob Repair

17 Signs To Know You Work With Car Key Fob Repair

Car Key Fob Repairs

Key fobs today do much more than simply unlock and start vehicles. But that extra complexity can add up to high repair bills when one of them fails.

It's a good idea to know that most fobs are powered by flat watch-style batteries which can be easily replaced at home. You may find that a simple reset can make your fob work again.

Battery Replacement

The most common reason the key fob ceases to function is due to an inoperative battery. This is easy to fix, and it's worth trying before you spend money on a new fob. Simply drive your car to an auto parts store or hardware retailer that stocks button cells and choose the replacement. You can also refer to the owner's manual (or YouTube for videos explaining how to replace the battery) for specific instructions on how to remove and replace the battery inside your fob.

Most fobs have two halves that snap togetheryou'll have to gently pry the sides apart in order to access the battery. It's usually a screwdriver or some other tool equipped with a thin, flat blade. It's a good idea to look for a groove along the bottom of the fob which you can use to put your tool in between. You may also want to look out for small pieces that might break loose while you work.

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

Check the fob to determine if it works by pushing a button. If it isn't working, there may be a problem with your vehicle that requires to be fixed or replaced by a specialist.

Certain key fobs require special tools to open and close them, and the contacts inside could be fragile and susceptible to corroding. In these situations, a car specialist or the dealer will likely be your best option. When replacing a battery be gentle and follow your owner's instructions. You might be able to find the same battery in a big-box store or discounter, but make sure you read the owner's manual to make sure that it's compatible with your car.

Replace the internal key

Most key fobs contain an actual mechanical key that is hidden within the fob to stop thieves from getting. If the battery inside the fob goes out it will leave a blank key left behind, which can be used to open trunks and doors. In certain cases, this key can even start certain vehicles. Most people aren't aware of this, but they can save themselves from a trip to the dealer by simply replacing the fob battery. The flat watch-style batteries are used in most modern fobs. They can be found in hardware stores and auto parts stores. Choosing the right type of battery is important, however. A bad battery can damage the electronic circuitry, causing the fob to fail much sooner.

If you replace the battery, and the problem persists it could be a sign something else is happening with your vehicle. If you have an owner's manual, check to see if a reset procedure is available to restore the fob's factory programming. If this isn't working, you'll need to visit a dealership or a shop independent that specializes in vehicle-security systems and key fob programming.

Fobs may also malfunction due to malfunctioning transmitter receivers. They are typically placed on the dashboard or close to the steering wheel, and they send signals that allow you to unlock and start your car using the fob. If you notice that you're having to get closer and closer to your car to be able to make it work, there's a great chance the transmitter is failing.

It could be necessary for a professional to remove the case of the fob to replace the transmitter. A simple screwdriver can usually do the trick, but certain fobs require a specific tool or equipment that can only be found at a dealership. This is a job that should be performed by a qualified mechanic to avoid damaging the fob as well as yourself.

Reprogramming the Key

A key fob that is not working could just require an upgrade in battery. Because these batteries are cheap and readily available in pharmacies and home improvement stores, this is the ideal first step before purchasing an entirely new car key fob.

Alternately, you might be able to program the fob on your own by following the steps. The process is different for different vehicles brands, so it's essential to read the owner's manual and study the specifics of the model you own. For example, one key fob may require the ignition to be turned on while reprogramming it. One key fob could require the key to be inserted multiple times.

The process is straightforward. First, ensure that the new battery is securely 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 key is communicating with the vehicle correctly. After that, put the old key back in the ignition and switch it to the ON position, but don't start the engine. Then, press the lock button on the fob, while making sure to point it towards the transmission receiver, which is usually located on the front of the car above the mirror. Within a brief time the key will signal to the vehicle that it's been programmed by cycling the doors' locks or emitting an emitted sound. This is a difficult process, so pay close attention to the timing and don't press too hard the button.

If the key fob still isn't working Try reprogramming it with fresh batteries. If the issue is still there, you might want to visit your car dealer or locksmith. A professional will have all the tools and equipment needed to reprogram your car's fob, or even create a brand new one if needed.

Genesky says he can usually program newer fobs for $200 to $250, based on the vehicle. He's had European models rejected because there isn't the equipment needed. Fortunately, many aftermarket fobs are programmable but it's always best to talk to an auto dealer first to see what their price is.

How do I get a new fob

If your key fob cannot be repaired, you may have to purchase another one. Based on the model and make, an auto locksmith or dealership might be able to assist. The dealership is likely to be the most expensive alternative for replacing a fob, but they will also have all of the necessary tools and software to program your car correctly. Numerous locksmiths who are independent provide a new car key fob for an affordable price.



It is a good thing to try to reset your current device before you make the decision to purchase a new one. The owner's guide should explain the correct procedure for reset. This is usually a series button presses that restores the factory programming.

You should also look over the owner's guide and warranty information to see whether you can obtain an additional fob for your key. If your car is under warranty, or you have a car insurance policy or auto club membership that includes bumper-to-bumper insurance, you might be able to receive some reimbursement for the cost of an entirely new fob.

Finding  lock and key repair near me  to purchase a fob can be a challenge. You might want to visit the dealer for this service if are driving a brand new car and you want to be confident that your key fobs work properly. If you are looking for a cheaper alternative, it is possible to find a locksmith who can provide the same service for a lower price.

If you're not confident handling this type of work on your own, a professional locksmith may be a great option. They are certified and equipped to repair or replace most types of car key fobs and often they can complete the task quickly. A locksmith can also 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 do not want to leave their vehicles unattended.