Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs can experience problems over time, such as an inability to function. Some issues may need professional attention, but most can be fixed at home.
Change the battery is often the first step. The majority of fobs have flat watch-style batteries which are easily found at hardware stores or auto parts stores.
Dead Battery
It can be a major inconvenience when the battery of a key fob goes out. This is especially true when you are far from home. Fortunately, there are ways to get back on the road even if your vehicle's keyless entry system isn't working.
One of the first things you should be sure of is whether the key fob's buttons still function. If they do, the problem may lie in the locks of your car instead of the fob.
If the keys aren't unlocking, look for a mechanical key slot concealed in your door handle trim or on another part of the vehicle (consult your owner's manual). Insert the mechanical key and try again. If this doesn't work, some cars have an app that allows you to unlock the doors remotely. FordPass Connect, myChevrolet Mobile App and myMazda apps, for instance, allow owners to unlock their doors using their smartphones. These apps are charged monthly subscription fees.
Also, make sure whether your key fob won't drain the batteries of your car by sitting on them. A dead fob will drain your battery quickly particularly if it's used to control your phone or TV while you're watching.
Holding the key fob up to your car's start button may cause the key fob that has a low battery. This simple fix could save you from a trip to your dealer or to certain Interstate All Battery Centers.
If your key fob does not work try testing it in a vehicle with a push-button starter. If it's not working the battery of the fob needs replacement. This is why it's a good idea to keep an extra key fob in the bag or purse.
Damaged Buttons
If your key fob isn't able to unlock doors or start the vehicle remotely, it's possible that one or more of its buttons is damaged. Your key fob is equipped with a circuit with "contact pads" which are covered by an electrically conductive film. This film wears off over time. This wear can cause your device to respond less quickly, or not respond at all.
The good news is that the pad inside a car key fob can be replaced easily, and it can be done with the help of a simple flathead screwdriver. If the case is damaged or badly damaged, it will be difficult to open. You'll need to take it to an auto shop to get the fob repaired.
It's not uncommon for a key fob to be dropped on hard surfaces, walked on, or exposed to water. These incidents can cause physical damage, including bending and snapping the keys.
This could also affect the internals of your fob, which could lead to an issue. It's a good idea that's why you should always carry a spare fob in your wallet or pocket in case the one you currently have fails.
If your key fob's buttons aren't responding to the extent they should, you should first make sure the battery is in good condition. Be aware that key fobs aren't a special kind of electronic device - most of them run on the same two-dollar batteries that are used in hearing aids and watches and are available at hardware stores, drug stores, and online.
If the battery is in good condition it's likely that the buttons are worn down or dirty and can be cleaned using a moist cloth to clean them. If they're still not responding, you can try a different key fob to see whether the problem is with yours, or with a particular type of car key fob. If the other key fob is working, then yours may need to be reset or replaced.
Reprogramming
The hidden world of car key fobs is more intricate than what some myths suggest. Basic fobs operate using radio frequency signals that are specific to each vehicle. The fobs must be programmed correctly in order for them to open and start the vehicle. Reprogramming a key fob is not as easy as pressing a few keys. It's usually handled by the dealer.
The procedure for reprogramming the fob depends on the make and model year of your vehicle and it's essential to refer to the owner's manual to get step-by-step instructions. Some manufacturers, such as Mercedes, use proprietary technology that makes sure only the dealership can create a new fob and re-sync it with your vehicle. Some independent shops may offer this service, so make sure to check reviews and prices prior to selecting a shop.
Certain models of cars erase other fobs when they are changed. This means that you'll have to have additional fobs programmed by a professional. This is a costly proposition particularly if you're down to just one working fob. Even in the event that the mechanical key will not work to start the vehicle, it's a good idea to have a backup option that can open the doors and trunk.
If you do decide to attempt to reprogram your fob on your own be prepared for a difficult journey. There are countless guides online that promise to work, but you'll likely be disappointed. Many of these guides were written by individuals with no experience and are based on unsubstantiated statements. car key remote repair near me of them even claim that you can program your car key fob in only a few clicks, which can be very misleading.
Most key fobs are held in place by a clip made of plastic that's easy to loosen, however, the battery is within the circuit board, which means you'll have to carefully pry it out with a tool. You should be able to find the button cell battery. It's typically tiny batteries for watches that you can purchase at most home improvement or pharmacies. Removing the battery is typically a straightforward procedure, and it's always worthwhile to try first before replacing the entire device.
Replacement
If your car key fob is damaged or isn't functioning, it's important to know there are several options to remedy the problem. It is possible to repair the issue quickly by replacing the battery or programming your key fob. However it is possible that a more extensive repair might be required. It is also helpful to have a spare key fob in case one is lost or stolen.
Most modern key fobs contain a small physical key, in addition to the electronics which makes them more expensive and more difficult to replace than traditional keys. Certain "smart" fobs also include a remote starter built-in. It's important to be aware that it could take an hour or more to cut and program an alternative fob for your vehicle.
Fobs make use of a tiny radio transmitter that is mounted on circuit boards to communicate with the car's receiver. When you press a button, the transmitter sends an RF signal that is unique to the car receiver. The receiver detects the signal and checks it against preprogrammed codes. This allows a driver to start the car from a distance, without the need to put the ignition key in.
If the buttons on the fob you have purchased fail to respond or work sporadically it could indicate that they have been damaged by water or other causes. It is possible to repair the fob by taking it apart and examine for broken or non-responsive buttons. If this doesn't solve the issue, try reprogramming the fob or purchasing another one.
It is recommended to consult a local auto dealer or a locksmith prior to buying a replacement keyfob on the internet to make sure it's compatible with the security system of your vehicle. There are many aftermarket fobs less expensive, but it's crucial to research the brands and read reviews prior to attempting to program them. Some fobs can be changed by a locksmith who is reputable and other models require programming equipment that only a mechanic or dealer can utilize.