Key Fob Repair Service: The Ugly Truth About Key Fob Repair Service

· 6 min read
Key Fob Repair Service: The Ugly Truth About Key Fob Repair Service

Key Fob Repair Service

Key fobs are subject to a lot of abuse. Depending on how they're stored and how often they are moved around, their buttons could be damaged or stuck.

Fortunately, the majority of key fob issues are relatively simple to fix. Certain issues with key fobs are more serious and require professional assistance. Locksmiths can be of great help in these situations.

Dead Fob Battery

Car key fobs have become pretty smart however, this doesn't mean that they won't sometimes get stuck in the "not responding" zone. It's time to replace your battery when this happens. This won't fix the issue since there may be an issue with the connection on one of the terminals on the battery connector.

The car manufacturers are aware of this issue, and they frequently install a spare mechanical key inside the fob for just this kind of emergency. To access this, you can find the small release switch or latch on the back of the fob (check the user's manual for specifics). By pressing this, you will be able to unlock the fob, and then gain access to an actual key that you can use to unlock your car.

You will also need to be close to your car to lock and unlock it. This is because the fob's transmitter weakens as its battery ages which limits its operating range.

It's fairly easy to replace the battery. Make sure you purchase a button cell battery (which looks like an incredibly small silver coin) for your fob and follow the user's guideline or video instructions on how to remove the old battery. Then, replace the new battery in the same orientation that the old one was placed (the positive side should be facing upwards toward the buttons). Test the lock/unlock and begin the functions of the fob after reassembling it. Make sure the new battery is installed correctly.

Certain key fobs may be difficult to open but you should be able to do it by locating the latch, switch or screw at the back of the fob, and then prying it open. You'll need the fob in order to work with your vehicle, so take care not to damage it! You could also take the fob to an expert in case you're not comfortable making it your own. Because it's a standard procedure that most auto shops will change the battery in fobs for a minimal fee. Some dealers will even be willing to do it for free depending on the model and brand of the car.

Fob Is Not Working

Replace the batteries if your key fob isn't working. This is the quickest fix and is the most likely way to fix the issue. If your device is not working after a battery change it may be due to damage or another issue that requires the attention of a professional.

The damage to your car key fob due to a variety of reasons including physical trauma, exposure to water, or a corroded circuit board. These issues could stop your key from sending a signal to your receiver in your car, which will then prevent your car's ignition or doors from opening. You may have to hire a professional to replace your key if it's damaged.

The buttons on your keychain might have worn out due to repeated use. The rubber may wear out and make the buttons less 'clicky' or springy.  Going On this page  may stop registering your presses. Try wiping the buttons and adjusting them to see if that fixes the issue however, it's best to take the fob to have it professionally assessed for more extensive repairs.

Double check that the battery you're using is exactly right for your fob. You can find a list with acceptable batteries online or in most hardware stores. You must always refer to your owner's manual or the engraving on the inside of the fob to determine the type of battery it needs. If the battery isn't the right fit it could be a problem transmitting strong signals or providing enough power to internal components.


In some cases the issue could be in the vehicle's electronic parts or receiver. You can test this by using the physical key to open the door, and then trying to start your car with the inductive backup system (if available). If your key's physical counterpart does not allow you to start your car, have a mechanic inspect the electronic components and the receiver to ensure they're functioning properly.

Fob Is Damaged

A key fob is composed of a variety of parts, and one malfunction can cause other components to fail. If a key fob ceases to function it's crucial to look for obvious causes such as cracked casings or a damaged component. It's also essential to examine other parts of the vehicle such as the lights and horn to determine whether they're working as expected.

If the fob for your key is damaged, it's best to obtain a replacement from your dealership or an auto locksmith instead of trying to repair it. The fob may require reprogramming to the car, which is something that can't usually be done at home, and requires special equipment to do this.

The buttons on a key fob make use of contacts to transmit signals to the circuit board on the key fob, but these can wear down over time. This is especially true if you drop the fob or leave it in hot weather.

In time, the internal wiring in the key fob may get worn out. It can lead to a button that doesn't work when pressed, or only can be used when pressed extremely strongly. It could also result in the car not opening or locking when the fob is activated.

The majority of fobs have an outer cover made of plastic that can be opened and then cleaned with soap and water. This can bring a keyfob back to its original purpose. It's an excellent idea for you to do it regularly to prevent dirt from damaging the inside.

A damaged battery is usually the reason why a key fob will not turn on or work. Many mechanics and car dealers can change the batteries quickly but if you're at ease doing it yourself, you can purchase a new battery from the hardware store or a big-box retailer and follow instructions in your owner's manual or on YouTube to install it.

The most likely scenario is that the key fob is damaged internal damage, such as cracks in the case, tiny electronic components not completely attached to the circuit board, or corroded or bent contact points for batteries. If any of these are the case, it's a good idea to consult with an auto locksmith or dealer for suggestions on a replacement and help getting it programmed to your vehicle.

Fob Is Not Programming

Car key fobs are an excellent convenience that allows you to unlock your car's doors and then start the engine. They can also cause frustration when they stop working or seem to work intermittently. In some instances, the problem may be as simple as replacing the battery, but in other situations it could require an intricate repair. The first step is determining why the fob doesn't work properly.

The most frequent reason for a fob not working is that it fails to recognize your vehicle. This can happen when the connection between your remote and the car is damaged. This connection can be reset without the need for costly key fob repair.

Other issues could arise when the key fob no longer sends an energizing signal. This can happen if the key has been damaged or if the battery is dead. In either case, try to reconnect your key with your vehicle. This can be done by following the directions provided with the key fob. Also, you should keep a spare car key in case the primary key is lost.

It's possible that the fob doesn't receive the signal sufficiently strong from the car. This could be caused by a weak car battery or interference from wireless devices or an antenna problem. By using a remote tester you can test the fob to check if it's the problem. If the tester does not illuminate when you press any of the buttons, it could be that the battery is in need of replacement or that the fob has been damaged.

Another reason why the fob not transmitting a strong enough signal is that the car's immobilizer system is hindering it. This could happen if the fob's programming isn't correct to your vehicle, or if there is an issue with the software.

If you're not able to solve the issue or it's not worth the hassle of trying to repair the fob, then you should think about buying a new one. Many online retailers offer low-cost options and some can be delivered to your residence.