Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs may experience problems such as loss of functionality. While some issues may require expert attention, most are fixable at home.
Changing the battery is often the first step. Most fobs are powered by flat watch-style battery, which can be easily found at hardware stores or auto parts stores.
Dead Battery
It can be a real issue when a key fob's battery dies. remote key fob repair near me is especially true when you are far from home. Fortunately, there are ways to get back on the road the vehicle's keyless entry system isn't working.
One of the first things to check is whether the buttons on the key fob work. If they do, then the issue may be with your car's locks instead of the fob.
If the keys aren't unlocking you need to look for a mechanical key slot concealed in the door handle trim or somewhere else on the car (consult your owner's manual). Insert the mechanical key, and try again. If this doesn't work certain cars come with an app that allows you to unlock doors remotely. FordPass Connect, myChevrolet Mobile App and myMazda apps, for example, allow owners to unlock their doors using smartphones. These apps charge monthly subscription fees.
You should also check that your key fob doesn't drain your car's batteries by resting on them. A dead key fob can drain your battery fast especially if it's used to control the TV or phone while you're watching.
Holding the key fob up to your car's start button could cause an ignition key fob with a low battery. It's a quick fix that can save you a trip to the dealership or even select Interstate All Battery Center locations.
If your key fob doesn't work try testing it in a car with a push-button starter. If it doesn't work, the fob battery probably requires replacement. It's a good idea to keep an extra key fob in your purse or backpack.
Damaged Buttons
It's possible that the key fob has a damaged button. Your key fob likely contains circuit boards with "contact pads" for each button, and these tiny pads are covered with a conductor of electricity that wears away over time. This wear could cause your fob to respond less or not at all.
The good news is that the pad on the car key fob is easy to replace, and can be done so with the help of a flathead screwdriver. If, however, the key fob is badly smashed or harmed in any way, it could be more difficult to open the case, and you'll be required to take the fob to an auto shop for repair.
It's not uncommon for a key fob be thrown around, trampled upon, or exposed water. These events can cause physical damage to the keys, including bending or snapping them.
This could also cause internal damage to the fob and result in a malfunction. It's a good idea, therefore, to always carry an extra fob in your wallet or in your pocket in case the one you currently have breaks.
Examine the battery first to determine if your key fob buttons aren't responding as they should. Key fobs do not require an electronic device. They use the same battery for two dollars that is used in hearing aids and watches. These batteries are available at drug, hardware, and online stores.
If the battery is fine it's possible that the buttons are just dirty or worn out, and can be easily cleaned using a damp cloth to wipe them down. If they're still not responding, try a different type of key fob to determine if the problem is with yours or with a specific type of car key fob. If the other key fob functions it is possible that yours needs to be reset or replaced.
Reprogramming
The hidden world of car key fobs is more intricate than what some myths suggest. Basic fobs work using radio frequency signals that are unique to each car. The fobs have to be properly programmed in order to be able to be able to unlock and start the vehicle. Unfortunately, reprogramming a fob isn't as simple as pressing a few buttons and with only a few exceptions it must be handled by a dealer.
Refer to the owner's manual for specific instructions. Certain manufacturers, like Mercedes, use proprietary technologies that only dealerships are capable of creating a brand new key fob and resync it to your vehicle. However some independent shops provide this service as well and you should check reviews and prices before selecting the shop.
Some car models will erase all other fobs if they are programmed again. This means that you'll have to have any extra fobs programmed by professionals. This can be expensive particularly if your fob has stopped working. It's always wise to have at minimum a spare mechanical key you can use to open the trunk and doors even if it doesn't start the car.
If you do decide to try and reprogram your fob yourself, be prepared for a frustrating journey. You'll be disappointed by the numerous online guides that claim to be successful. Many of these guides were written by people who have no experience and are based on unsubstantiated statements. Some of them even claim that you can program your own car key fob in just a few clicks, which is very false.
The battery is typically held in place by a plastic clip, which can be removed easily. However, the circuit board contains the battery, and you will need to carefully pry the battery out using the aid of a tool. You should be able find the button cell battery. This is usually tiny batteries for a watch, which is available at most pharmacies or at home improvement stores. Replacing the battery is usually an easy process, but it's always worth trying first before replacing the entire device.
Replacement
If the car key fob is damaged or has stopped working, it's important to know there are several ways to fix the issue. It may be possible to repair the issue quickly by replacing the battery or reprogramming the key fob. However it is possible that a more extensive repair may be needed. It's also beneficial to keep a spare fob in case one gets lost or stolen.
Modern key fobs are more expensive and difficult to replace due to the fact that they have a physical key as well as the electronics. Certain "smart" fobs also have a built-in remote starter. As such, it's important to understand that it can take up to an hour for a replacement key fob cut and programmed to your vehicle.
Fobs communicate with the car's receiver by using a small radio transmitter that is mounted on a circuitboard. By pressing a button the transmitter emits an RF signal that is unique to the car receiver. The receiver recognizes and compares the signal with preprogrammed codes. This allows the driver to open the car and start it from a distance without inserting the key into the ignition or turning a lock.
If your key fob buttons are not responding or working intermittently, they could have been damaged by water. It is possible to repair the fob by taking it apart and examine for buttons that are not responsive or broken. If this does not solve the issue, you can try reprogramming the fob or purchasing an entirely new fob.
It is best to check with a local auto dealer or a locksmith prior purchasing a replacement keyfob to make sure it's compatible with the security system of your vehicle. Fobs purchased from a third party can be cheaper however, you must study the brands and read reviews before trying to program them yourself. Some fobs can be changed by an accredited locksmith however, other models require programming equipment that only a mechanic or dealer can use.