Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs can have issues, such as a loss of functionality. While keys repair might require professional attention, the majority are fixable at home.
The battery replacement is usually the first step. Most fobs utilize batteries with a flat design which are easily found at hardware stores or auto parts stores.
Dead Battery
It can be an incredibly problem when the battery of a key fob goes out. This is especially true when you're away from home. There are methods to get your vehicle back on the road in case your keyless entry system has stopped working.
The first thing to check is to see if the buttons on the fob are working. If they do, then the issue may be with your car's locks instead of the fob.
If your keys do not unlock, you might find an electronic slot in the trim around the door handles or in your car (consult the owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, certain cars come with an app that allows you to unlock it 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 does not take the car's battery away by sitting on them. A dead fob can drain your battery fast particularly if it's used to control the TV or phone while you're watching.
The key fob should be held right up to your car's start button could cause the key fob that has low battery. This simple fix can save you from a trip to your dealer or to certain Interstate All Battery Centers.
If your key fob doesn't work You can test it in a vehicle that has a push-button starter. If it doesn't work the battery of the fob needs replacement. It's a good idea to keep a spare key fob in your purse or backpack.
Damaged Buttons
If your key fob is unable to open doors or start the car remotely, it's likely that one or more of its buttons have been damaged. Your key fob is equipped with an electronic circuit that has "contact pads" that are covered with an electrically conductive film. The film wears off over time. The wear may make your fob respond less or not at all.
The pad that contacts the car keyfob is easily replaced with the flathead screwdriver. If the case is damaged or badly damaged it may be difficult to open. You'll need to take it to an auto shop to have the fob repaired.
It's not unusual for a key fob to being dropped, trampled or even exposed to water. All of these incidents can cause physical damage, including bending and snapping the keys.
This can also affect the internals of your fob, which could lead to an issue. This is why it's always a good idea to carry a spare key fob in your pocket or wallet in case you accidentally break the one you have.
If the buttons on your key fob aren't working in the way they should, first verify that the battery is in good condition. Key fobs don't need any special electronic device. They utilize the same battery for two dollars that is used in hearing aids and watches. They are sold at drug, hardware, and online stores.
If the battery is working it's possible that the buttons are just dirty or worn down, and can be cleaned by using a damp cloth to clean them. If the buttons don't work, try an alternative car key fob. This will help you determine if the problem is yours or an specific model. If the other fob functions, it's likely that your key fob has to be reset or possibly replaced entirely.
Reprogramming
The secret world of car key fobs is more complicated than the myths suggest. The basic fobs function by using unique radio frequency signals that are assigned to specific vehicles. The fobs have to be programmed correctly for them to be able to unlock and start the vehicle. Reprogramming a key fob is not as simple as pressing a few keys. It is usually handled by the dealer.
The process of reprogramming a fob is based on the model and model year of the car you own and it's essential to refer to the owner's manual to get step-by-step instructions. Some manufacturers, such as Mercedes utilize proprietary technology that guarantees only dealerships can design a new fob and re-sync it with your vehicle. However certain independent shops provide this service as well, so be sure to review reviews and prices prior to choosing the shop.
Some car models will erase other fobs when they are programmed again. This means that you'll have to have any additional fobs programmed by an expert. This can be expensive especially if the fob is no longer working. It's always wise to have at minimum a spare mechanical key you can use to unlock the trunk and doors, even if it won't start the car.
If you decide to attempt to reprogram your fob on your own be prepared for a frustrating journey. You'll be disappointed with the countless online guides that claim to be successful. A lot of these guides were written by people with no experience and are based on unsubstantiated claims. Some of them even claim that you can program your own car key fob in just a few clicks, which can be very misleading.
The battery is typically held in place with clips made of plastic, which is easily removed. However the circuit board houses the battery, and you will need to carefully remove the battery with a tool. You should be able find the button cell battery. This is usually an insignificant battery for watches that you can purchase at most home improvement or pharmacies. It's usually simple to replace the battery. Before replacing the whole device, you should try it first.
Replacement
There are many ways to fix a broken or damaged car key fob. An easy fix could be as easy as replacing the battery or reprogramming the key fob, but a more thorough repair may be required. A spare fob is useful in the event one is stolen or lost.
Modern key fobs are more expensive and difficult to replace since they have an actual key along with electronic. Some "smart fobs" even come with remote starters. It's important to be aware that it can take an hour or more to cut and program an alternative fob for your vehicle.
Fobs make use of a tiny radio transmitter on a circuit board to communicate with the car's receiver. Pressing an appropriate button will activate the transmitter, which sends an RF signal unique to the car's receiver. The receiver detects and compares the signal to preprogrammed codes. This allows the driver to open the car and begin it from a distance without placing the key in the ignition or turning the lock.
If the buttons on your key fob fail to respond or function intermittently it could indicate that they have been damaged by water or other causes. You can fix the fob by taking it apart and examine for damaged or non-responsive buttons. If this doesn't resolve the problem, try reprogramming it or purchasing an entirely new fob.
It is best to check with an auto dealer in your area or a locksmith prior to purchasing a replacement keyfob online to make sure it is compatible with the security system of your vehicle. The fobs from the aftermarket can be less expensive but you should research reviews and brands before trying to program them yourself. While some fobs can be replaced by a reputable locksmith others require special equipment for programming that can only be used by a car dealer or auto technician.