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. Certain issues may require professional attention, but many are fixable at home.
Changing the battery is often the first step. Most fobs use flat watch-style batteries which are easily found at auto parts stores.
Dead Battery
It can be a major inconvenience when the battery of a key fob is dead. This is particularly true when you're away from home. There are ways to get your vehicle back on the road if your keyless entry system has stopped working.
The first thing to check is if the buttons on the fob are still working. If they do, the issue could be with your car's locks instead of the fob.
If your keys won't unlock, there may be a mechanical slot within the trim around your door handles or on your vehicle (consult the owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, certain cars have an app that allows you to unlock the door remotely. For example, the FordPass Connect app, the myChevrolet mobile app and myMazda app allow owners to open the doors using smartphones. However, these apps are subject to a monthly cost.
It is also important to ensure that your key fob isn't draining your vehicle's battery by sitting on it. A dead key fob can drain your battery, especially when you utilize its remote functions while watching TV or speaking on the phone.
Holding the key fob up to your car's start button can sometimes start a key fob with an empty battery. It's a simple solution that could save you a trip to the dealership or even select Interstate All Battery Center locations.
You can also find out whether your key fob actually dead by testing it in another vehicle with push-button ignition. If it's not working, the fob battery probably 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 is unable to unlock doors or start the vehicle remotely, it's possible that one or more of its buttons is damaged. Your key fob likely contains an electronic circuit board that has "contact pads" for each button. These tiny pads are coated with an electrically conducting film which wears down over time. This wear could cause your fob to react slower, or not respond at all.
The contact pad on car keys can be easily replaced using the flat-head screwdriver. If the case is damaged or badly damaged, it will be difficult to open. You'll need to take it to an auto repair shop to get the fob repaired.
It's not unusual for a key fob to be dropped on hard surfaces, tripped on or exposed to water. All of these can cause physical damage to keys, such as bending or snapping them.
This could also cause internal damage to the fob that could result in a malfunction. This is why it's an ideal idea to keep a spare key fob in your wallet or pocket in the event that you damage the one you own.
If your key fob's buttons aren't working as they should, first check to make sure the battery is in good condition. Key fobs do not require an electronic device. They use the same two-dollar battery 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 clean. If they're still not responding, you can test a different key fob to determine whether 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 world of car key fobs is much more complicated than the myths suggest. The basic fobs function on unique radio frequency signals that are assigned to specific vehicles. The fobs need to be programmed correctly in order for them to be able to unlock and start the car. Reprogramming a key fob not as easy as pressing several keys. It's usually handled by the dealer.
Check the owner's manual for more detailed instructions. Certain manufacturers, like Mercedes, use proprietary technologies that only dealers are capable of creating a new key fob and then resync it to your vehicle. Some independent shops may also offer this service, so be sure to read reviews and prices before choosing the right shop.
Certain car models erase other fobs when they're programmed, meaning you'll have to have any additional fobs professionally programmed as well. This is an expensive proposition particularly if you're just one functional fob. It's always recommended to have at least one spare mechanical key that you can use to open the trunk and doors even if it doesn't start the car.
If you do decide to attempt to reprogram your fob on your own, be prepared for a gruelling journey. There are many guides online that promise success, but you'll likely be disappointed. A lot of these guides were created by people who have no experience in this area, and they're often founded on unsubstantiated claims. Some of these guides claim that you can program your car key fob yourself with only a few clicks. This is a false claim.
The majority of key fobs are held in place by a clip made of plastic which is easy to remove, however, the battery is located inside the circuit board, which means you'll have to carefully pry it out with a tool. You should be able find the button cell battery. It's usually an insignificant battery for a watch that is available at most pharmacies or at home improvement stores. The replacement of the battery is generally an easy process, but it's always worth trying first before replacing the entire unit.
Replacement
There are a variety of ways to fix a damaged or malfunctioning car key fob. It is possible to fix the problem quickly by replacing the battery or reprogramming the key fob. However, a more extensive repair may be required. It's also beneficial to have a spare key fob in the event that 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 complex to replace than traditional keys. Certain "smart" fobs include a remote starter built-in. It's important to be aware that it could take up to an hour to cut and program an alternative fob for your vehicle.
Fobs communicate with the car receiver using a tiny radio transmitter on circuit boards. Pressing an appropriate button will activate the transmitter, and it transmits an RF signal that is unique to the car's receiver. remote car key repairs is able to recognize and compare the signal to 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 the buttons on your key fob fail to respond or operate intermittently it could mean that they have been damaged by water or other factors. You could be able to fix the fob by taking it apart and examining it for broken or non-responsive buttons. If this doesn't solve the problem, try reprogramming or buying an entirely new fob.
It is best to check with a local auto dealer or a locksmith prior buying a replacement keyfob on the internet to ensure that it's compatible with the security system of your vehicle. There are a variety of aftermarket key fobs available less expensive, but it's crucial to research the brands and read reviews prior to attempting to program them. Certain fobs can be modified by an experienced locksmith however, other models require programming equipment that only a technician in the automotive industry or dealer is able to utilize.