Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs can have issues with time, like the loss of functionality. While some issues may require professional attention, many can be fixed at home.
The first step is usually to replace the battery. The majority of fobs are powered by flat watches-style batteries that is easily available in hardware or auto parts stores.
Dead Battery
It can be an incredibly issue when the battery of a key fob dies. This is particularly true if you are away from home. However, there are options to get back on the road even the vehicle's keyless entry system isn't working.
The first thing you should check is to see if the buttons on the fob are still working. If they aren't then the issue could be with the car's locks.
If your keys don't work you need to look for a mechanical key slot concealed in the trim of your door handle or somewhere else on the car (consult your owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, some vehicles have an application that lets you unlock it remotely. For example, the FordPass Connect app, myChevrolet mobile app and myMazda app permit owners to open the doors using smartphones. These apps charge a monthly fee for subscription.
It is also important to ensure that your key fob isn't draining your car's battery by being plugged into it. A dead fob can drain your battery quickly especially if it's used to control the TV or phone while you are watching.
Holding the key fob up to your car's start button can sometimes start the key fob that has low battery. This simple fix can save you from having to visit your dealer or certain Interstate All Battery Centers.
You can also find out whether your key fob is actually dead by trying it in another vehicle with the push-button ignition. If it doesn't work it's likely that the battery needs replacement. This is why it's a good idea keep an extra key fob in the bag or purse.
Damaged Buttons
If your key fob doesn't have the ability to unlock doors or start your car remotely, it's likely that one or more of its buttons is damaged. The key fob may contain a circuit board with "contact pads" for each button, and these tiny pads are covered with an electricity conducting film that wears away over time. This wear could cause your fob to respond slower, or not respond at all.
The good news is that the pad inside the car key fob can be replaced easily, and it can be done using a simple flathead screwdriver. If the case is damaged or badly smashed, it will be difficult to open. It is necessary to take it to an auto shop to have the fob repaired.
It's not common for a key fob being dropped, trampled or exposed to water. These incidents can cause physical damage, such as bending and snapping the keys.
This could also cause internal damage to the fob, which could cause a malfunction. It's a good idea that's why you should always carry a spare fob in your purse or pocket in case the one you're currently using fails.
Examine the battery first to determine If your key fob's buttons aren't responding as they should. Be aware that key fobs aren't a special type of electronic device - they're typically powered by the same two-dollar batteries used in watches and hearing aids, which are readily available at hardware stores, drug stores, and online.
If electronic car key repair near me is good it is possible that the buttons are dirty or worn out. You can easily clean them with a damp cloth. If they're still not responding, you can test a different key fob to see whether the problem is with yours, or with a specific type of car key fob. If the other key fob functions, then yours may need to be reset or replaced.
Reprogramming
The hidden world of fobs for car keys is more complex than the myths that surround it suggest. The basic fobs operate by using unique radio frequency signals that are assigned to specific cars. The fobs must be properly programmed in order for them to unlock and start the vehicle. Reprogramming repair car keys is not as easy as pressing a few keys. It's usually handled by the dealer.
Check the owner's manual for specific instructions. Some manufacturers, like Mercedes have proprietary technology that only dealerships are capable of creating a new key fob and resync it to your vehicle. However some independent shops offer this service as well so make sure to look up reviews and prices prior to selecting a shop.
Some car models will erase other fobs when they're reprogrammed. This means that you'll have to have additional fobs programmed by a professional. This is an expensive proposition especially if you're only down to just one working fob. Even when the mechanical key doesn't work to start your car, it's a good idea to have a backup that can open the doors and trunk.
Be prepared for a difficult experience if you opt to reprogram your fob by yourself. There are numerous guides available online that promise to work, but you'll likely be disappointed. 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 car key fob in just a few clicks, which can be very misleading.
The battery is typically held in place with a plastic clip, which can be easily removed. However the circuit board houses the battery, so you will need to carefully remove the battery using an instrument. You should be able to find the button battery. This is usually tiny batteries for watches that can be purchased at any pharmacies or home improvement stores. Removing the battery is typically simple, and it's always a good idea to test this first before replacing the entire device.
Replacement
If a car key fob is damaged or fails to function, it's important to know there are several ways to remedy the problem. It may be 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. A spare fob is helpful in the event that one is lost or stolen.
Modern key fobs are more expensive and difficult to replace since they have an actual key along with electronics. Some "smart" fobs even include a remote starter built-in. It's important to know that it can take an hour or more to cut and program an alternative fob for your vehicle.
Fobs communicate with the car's receiver using a small radio transmitter on the circuit board. Pressing an appropriate button will activate the transmitter, which sends an RF signal that is unique to the car's receiver. The receiver recognizes and compares the signal to preprogrammed codes. This allows the driver to unlock the car and begin it from a distance, without placing the key in the ignition or turning a lock.
If the buttons on your key fob fail to respond or operate intermittently it could mean that they have been damaged due to water or other elements. You can repair the fob if you take it apart and examine for broken or non-responsive buttons. If this doesn't solve the issue, try reprogramming the fob, or purchasing a new one.
Before purchasing a replacement key fob online, consult a professional locksmith or your local dealer to confirm that it is compatible with the security system of your vehicle. There are many aftermarket fobs cheaper, but it's essential to look up the brands and read reviews before trying to program them. Certain fobs can be modified by an accredited locksmith however, other models require programming equipment that only a technician in the automotive industry or dealer can use.