Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs may be affected by issues such as loss of functionality. Certain issues may require professional attention, but many can be fixed at home.
The first step is typically to change the battery. Most fobs use flat watches that are readily available at auto parts stores.
Dead Battery
It can be an incredibly problem when the battery of a key fob dies. This is especially the case when you're away from home. There are methods to get your car back on the road if you're keyless entry system isn't working.
One of the first things to be sure of is to determine if the buttons on the key fob function. If they don't it could be a problem with the locks on your car.
If your keys won't unlock, you may find a mechanical slot in the trim around the door handles or in other places on your vehicle (consult the owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, some vehicles have an application that lets you unlock it remotely. FordPass Connect MyChevrolet Mobile Application and myMazda apps, for instance allow owners to open their doors with their smartphones. However, these apps have a monthly cost.
It is also important to ensure that your key fob isn't draining your vehicle's battery by resting on it. A dead key fob can drain your battery, especially when you use its remote functions while watching TV or talking on the phone.
A key fob that's low on battery can sometimes be activated by bringing it until you hit the start button. This simple fix can save you from a trip to your dealer or to certain Interstate All Battery Centers.
If your key fob doesn't work You can test it in a vehicle that has an electronic starter button. If it fails the battery of the fob requires replacement. This is why it's a good idea keep a spare key fob in the bag or purse.
Damaged Buttons
If your key fob isn't able to unlock doors or start your vehicle remotely, it's possible that one or more of its buttons are damaged. The key fob may contain an electronic circuit board that has "contact pads" for each button, and these tiny pads are coated with an electrically conducting film that wears down over time. This wear can cause your fob to respond less or not at all.
The contact pad on a car keyfob can be easily replaced with the flathead screwdriver. If the case is damaged or badly damaged it may be difficult to open. You'll need to take it to an auto repair shop to have the fob repaired.
It's not unusual for keys to be dropped on hard surfaces, trodden on or exposed to water. All of these events can cause physical damage to keys, including bending or snapping them.
This can also cause internal damage to the fob that could result in a malfunction. It's a good idea, therefore, to always carry an additional fob in your purse or pocket in case the one you're using breaks.
Make sure the battery is charged first If your key fob's buttons aren't responding in the way they should. Key fobs don't require a special type of electronic device. key fob repairs use the same two-dollar battery that is used in hearing aids and watches. The batteries are available at drug, hardware, and online stores.
If the battery is in good condition it is possible that the buttons are dirty or worn out. You can easily clean them using a damp cloth. If the buttons don't work, try an alternative car key fob. This will help determine whether the issue is yours or a specific model. If the other key fob works, then yours might need to be reprogrammed or replaced.
Reprogramming
The world of car keys fobs is more complex than many myths suggest. The basic fobs work on unique radio frequency signals that are assigned to specific cars. The fobs have to be properly programmed in order for them to be able to unlock and start the vehicle. Unfortunately, reprogramming a fob isn't as simple as pressing a few buttons and with very few exceptions it needs to be handled by a dealer.
The process of reprogramming a fob is based on the model and model year of the car you own It is therefore essential to read the owner's manual for step-by-step instructions. Some manufacturers, like Mercedes, use proprietary technologies that only the dealership is capable of creating a new key fob and resync it to your vehicle. However certain independent shops provide this service too and you should check reviews and prices before choosing a shop.
Certain car models erase other fobs when they're reprogrammed. This means that you'll have to have any additional fobs programmed by a professional. This can be costly, especially if your fob is no longer working. Even when the mechanical key doesn't work to start the vehicle, it's a good idea to have a backup option that can open the doors and trunk.
If you attempt to reprogram your fob yourself be prepared for a difficult journey. There are countless guides online that promise success but you're likely to be disappointed. A majority of these guides were written by people with no experience and are based on unsubstantiated statements. Some of them even state that you can program your own car key fob with just a few clicks, which can be very false.
The battery is typically secured with an elastic clip that can be easily removed. However, the circuit board contains the battery, so you'll need to remove the battery using a tool. Once you've got inside, you'll be able to find the button cell battery which is usually a small watch battery that is available in most pharmacies or at home improvement stores. It's generally easy to replace the battery. Before replacing the entire device, you should try it first.
Replacement
If a car key fob has been damaged or has stopped working it is important to know there are several ways to remedy the problem. A quick fix can be as easy as replacing the battery or changing the program on the key fob, but a more in-depth repair may be required. A spare fob could be helpful in the event that one is lost or taken.
Modern key fobs are more expensive and harder to replace due to the fact that they have an actual key along with electronic. Certain "smart" fobs have a built-in remote starter. Therefore, it's important to be aware that it could take up to an hour for an alternative key fob cut and programmed for your vehicle.
Fobs communicate with the car receiver using a tiny radio transmitter built into circuit boards. By pressing a button the transmitter sends an RF signal that is unique to the car's receiver. The receiver recognizes the signal and verifies it against the preprogrammed codes. This allows the driver to unlock the car and start it from a distance, without placing the key in the ignition or turning a lock.
If the buttons on your key fob do not respond or work sporadically it could indicate that they have been damaged due to water or other elements. You could be able to repair the fob by taking it apart and looking for any damaged or unresponsive buttons. If this doesn't resolve the issue, try reprogramming the fob, or getting a new one.
Before purchasing a replacement key fob online, seek out an expert locksmith or your local dealer to ensure that it's compatible with your vehicle's security systems. There are a variety of aftermarket key fobs available cheaper, but it's essential to research the brands and read reviews prior to attempting to program them. Some fobs can be changed by an experienced locksmith, but other models require programming equipment that only a car technician or dealer can use.