20 Resources That Will Make You Better At Car Key Fob Repair Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working

Key fobs can experience problems with time, like an inability to function. Some issues may need professional attention, but many are fixable at home.

Changing the battery is often the first step. Most fobs use flat watch-style batteries that are easy to find at hardware stores or auto parts stores.

Dead Battery

If a key fob battery dies, it can be a huge inconvenience, especially if you're away from home. There are methods to get your vehicle back on the road if your keyless entry system isn't working.

The first thing to check is to see if the buttons on the fob still work. If they do, then the problem may lie with your car's locks instead of the fob.

If your keys don't work try looking for a mechanical key slot concealed in your door handle trim or somewhere else on the car (consult your owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, certain cars come with an application that lets you unlock the door remotely. For example the FordPass Connect app, the myChevrolet mobile app and myMazda app permit owners to open the doors using smartphones. These apps are charged monthly subscription fees.

You should also make sure that your key fob isn't draining the car's battery by being plugged into it. A dead key fob will quickly drain your battery, particularly when you use its remote functions while watching TV or talking on the phone.

Holding the key fob right up to your car's start button can sometimes start the key fob that has low battery. It's a simple fix that will save you a trip to the dealership or select Interstate All Battery Center locations.

If your key fob doesn't work, you can test it in a car with a push-button starter. If it doesn't work, you may need to replace the battery in your fob. This is why it's a good idea to keep an extra key fob in a purse or backpack.

Damaged Buttons

If your key fob isn't able to unlock doors or start the car remotely, it's likely that one or more of its buttons are damaged. The key fob has an electronic circuit that has "contact pads" that are covered with an electrically conductory film. This film wears off over time. This wear could cause your device to respond less or not at all.


The good news is that the contact pad on the key fob of a car can be replaced easily, and it can be done using a simple flathead screwdriver. If the key fob is badly damaged or broken in any way, it may be more difficult to open up the case, and you'll be required to take the fob to an auto repair shop for repairs.

It's not unusual for a key fob to being dropped, trampled or even exposed to water. All of these events can cause physical damage to the keys, including bending or snapping them.

This could also affect the internals of your fob and could cause an issue. It's a good idea therefore, to always carry an additional fob in your wallet or pocket in case the one you're currently using fails.

Make sure the battery is charged first if your key fob buttons aren't working like they should. Key fobs do not require any special electronic device. They are powered by the same two-dollar battery that is used in hearing aids and watches. They are sold at drug, hardware, and online stores.

If the battery is working, it's likely that the buttons are worn down or dirty and can be easily cleaned using a moist cloth to clean them. If they're still not responding, you can test a different key fob to determine whether the problem is with yours or a specific kind of car key fob. If the other fob is working then it's likely the key fob you have needs to be reset or even replaced completely.

Reprogramming

The world of car keys fobs is much more complicated than most myths suggest. The basic fobs operate using radio frequency signals that are assigned to specific cars. The fobs must be properly programmed to allow unlocking and starting the vehicle. Reprogramming a key fob is not as easy as pressing a few keys. It is usually handled by the dealer.

Check the owner's manual for detailed instructions. Certain manufacturers, like Mercedes have their own proprietary technology that makes sure only dealerships can design the new fob and sync it with your vehicle. Some independent shops may offer this service, so be sure to read reviews and prices prior to choosing a shop.

Some car models will erase other fobs when they are reprogrammed. This means you'll need to have any extra fobs programmed by professionals. 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.

If you do 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're likely to be disappointed. A lot of these guides were written by people who have no experience in this area and often are founded on unsubstantiated claims. Some of them even claim that you can program your own car key fob in only a few clicks, which is extremely misleading.

car keys repairs near me of key fobs are secured by a clip made of plastic which is easy to remove, however, the battery is within the circuit board, and you'll need to carefully pry it out with a tool. You should be able to find the button battery. This is usually tiny batteries for watches that you can purchase at most pharmacies or at home improvement stores. Replacing the battery is usually a straightforward procedure, and it's always a good idea to test first before replacing the entire device.

Replacement

If your car key fob is damaged or has stopped working it is crucial to know there are a few ways to fix the issue. An easy fix could be as simple as replacing the battery or programming the key fob but a more in-depth repair might be required. A spare fob can be useful in the event that one is lost or taken.

Most modern key fobs contain the physical key, in addition to the electronic component which makes them more expensive and more difficult to replace than traditional keys. Certain "smart" fobs also include a remote starter built-in. As such, it's important to be aware that it could take up to an hour to get a replacement key fob cut and programmed to your vehicle.

Fobs communicate with the car receiver by using a small radio transmitter that is mounted on the circuit board. By pressing a button the transmitter sends an RF signal that is unique to the car receiver. The receiver is able to recognize and compare the signal to preprogrammed codes. This allows the driver to open the car and begin it from a distance, without inserting the key into the ignition or turning a lock.

If your fob's buttons aren't working or responding intermittently, they could be damaged by water. It is possible to repair the fob by disassembling it and examining it for broken or non-responsive buttons. If this doesn't solve the issue, try reprogramming it or purchasing a new fob.

Before you purchase a replacement fob online, you should contact an expert locksmith or your local auto dealer to confirm that it is compatible with the security system of your vehicle. Fobs purchased from a third party can be cheaper however, you must look into the brands and read reviews before attempting to program them yourself. While some fobs are able to be replaced by a reputable locksmith, others require special equipment for programming that can only be used by a professional auto dealer or auto technician.