Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs can have issues over time, including the loss of functionality. Certain issues might require professional attention, but many can be resolved at home.
Change the battery is often the first step. Most fobs run on a flat watch-style battery, which is easily available at hardware stores or auto parts stores.
Dead Battery
When a key fob battery fails, it can be a major hassle particularly if you're away from home. There are methods to get your vehicle back on the road in case your keyless entry system isn't working.
The first thing to test is if the buttons on the key fob still work. If they do, the issue could be with your car's locks instead of the fob.
If your keys will not unlock, you may find a mechanical slot in the trim around your door handles or in other places on your vehicle (consult the owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, some vehicles come with an application that lets you unlock it remotely. FordPass Connect MyChevrolet Mobile Application and myMazda apps, for example, allow owners to unlock their 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 resting on it. A dead key fob will quickly drain your battery, particularly when you utilize its remote feature while watching TV or speaking on the phone.
A key fob that's just low on battery may be activated by bringing it right up to the start button. It's a simple fix that can 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 trying it in a different vehicle that has push-button ignition. If it fails, 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
It's possible that your key fob has a damaged button. Your key fob contains an electronic circuit that has "contact pads" which are covered by an electrically conductor film. The film wears away over time. This wear could cause your fob to react less quickly, or not to respond at all.
The pad that contacts the car keyfob is easily replaced using the flathead screwdriver. If the key fob has been badly smashed or harmed in any way, it may be more difficult to remove the case, and you'll be required to take the fob to an auto shop for repair.
It's not unusual for a key fob to be dropped, trampled on, or exposed water. These events can cause physical damage to the keys, which could result in them breaking or snapping them.
This can also cause internal damage to the fob that could lead to an issue. This is why it's always an ideal idea to keep an extra key fob in your pocket or wallet in case you accidentally damage the one you own.
Make sure the battery is charged first If your key fob's buttons are not responding like they should. 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 drug stores, hardware stores, and even online.
If the battery is fine it's possible that the buttons are dirty or worn down and can be easily cleaned using a damp cloth to clean them. If the buttons still don't work, try another car key fob. This will help you determine whether the issue is yours or a specific model. If the other fob is working it's likely that the key fob you have needs to be reprogrammed or perhaps replaced entirely.
Reprogramming
The secret world of car key fobs is much more complex than some myths would 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 to be able to open and start the car. Reprogramming a key fob is not as easy as pressing several keys. It's usually handled by the dealer.
Consult your owner's guide for detailed instructions. Some manufacturers, such as Mercedes, use proprietary technology that guarantees only dealers can create a new fob and re-sync it to your vehicle. Some independent shops may also offer this service, so check reviews and prices before choosing a shop.
Some car models will erase all other fobs if they are changed. This means you'll need to have any additional fobs programmed by an expert. car key fob repair can be expensive, especially if your fob isn't working anymore. Even in the event that the mechanical key will not start the vehicle, it's a good idea to have a backup that can open the trunk and doors.
If you do attempt to reprogram your fob yourself, be prepared for a frustrating journey. You'll be disappointed with the numerous guides on the internet that claim to be successful. Many of these guides were written by people who have no prior experience in this field and are often based on unsubstantiated claims. Some even claim that you can program your own car key fob in only a few clicks, which can be very confusing.
The battery is usually held in place with a plastic clip, which is easily removed. However the circuit board houses the battery, so you'll need to pry the battery out using the aid of a tool. You should be able to find the button cell battery. This is usually a small battery for a watch, which is available at most pharmacies or home improvement stores. It's typically simple to replace the battery. Before replacing the entire unit, you can try replacing the button cell first.
Replacement
If the car key fob is damaged or has stopped working it is crucial to know that there are several ways to remedy the problem. It could be possible to resolve the issue quickly by replacing the battery or programming your key fob. However an extensive repair may be required. It is also helpful to keep a spare fob in case one is lost or stolen.
Modern key fobs are more expensive and difficult to replace due to the fact that they have a physical key and electronic. Some "smart fobs" even come with remote starters. Therefore, it's important to understand that it can take up to an hour to get a new key fob cut and programmed to your vehicle.
Fobs communicate with the car's receiver by using a small radio transmitter on a circuitboard. By pressing a button, the transmitter emits an RF signal that is unique to the car's receiver. The receiver recognizes and compares the signal with 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 aren't responding or working intermittently, they could be damaged by water. You could be able to repair the fob by removing it and examining it for broken or non-responsive buttons. If this doesn't fix the problem, you can try reprogramming your fob or buying a new one.
Before purchasing a replacement key fob on the internet, consult a professional locksmith or your local auto dealer to ensure that 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. While certain fobs can be repaired by a trusted locksmith, others require specialized programming equipment that can only be used by a vehicle dealer or auto technician.