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How to Repair Key Fob Issues Despite their longlasting nature key fobs arent immune to wear and tear They can get damaged or cease to function This can happen for a variety of reasons The most common reason is an unresponsive battery Changing the battery is an easy solution Other problems may be more complicated One possibility is signal interference It could also be a problem with a button Battery Its not difficult to have things break on your key fob because its a small and fragile piece Most issues with key fobs are not complicated or serious and can be easily fixed with the right tools and a little knowhow In some instances the simple replacement of a battery might be the solution The first thing you need to do is examine the key fob for signs of damage The outside of your key fob should be free of scratches dents and other signs that indicate the battery is dying or that the fob isnt functioning correctly Once youve examined the exterior youll need to use a flathead screwdriver to break open the key fobs shell and examine the circuit board and battery Most key fobs are powered by an a 3V button cell which is readily available in stores like Walmart If youre not sure what kind of battery your key fob uses consult your owners manual or local auto Locksmith for assistance After youve changed the batteries if the fob isnt working it could be caused by signal interference This can happen when other devices or car security systems interfere with radio signals transmitted between your key fob and your vehicle If this is the case your car dealer might be able manually change the programming of your key fob A wornout contact inside the device is a different problem when it comes to keyfobs If the contacts are corroded or worn out your key fob wont be able to transmit or receive signals It can be difficult to fix but you can try using metallic tape and the aid of a holepunch as a temporary fix You can also locate replacement keys fob buttons and housings fairly inexpensively online if you search by year model and model of your vehicle The key is to be careful not to alter your fob or changing the battery too much yourself and always seek professional help if you are able to This will ensure that you dont cause any additional damage to your fob and will keep it in good working condition for years to come Buttons Key fobs are a convenient feature of modern cars but like any other device they may have issues A few simple troubleshooting steps and some tips for maintenance will ensure that they work the way you are expecting them to A dead battery is among the most common reasons for a cars key fob to stop working The typical battery for a key fob lasts three to four years and if you begin finding it takes a lot of clicks to unlock your car or its not as responsive as it was in the past its time to replace the battery The majority of people can change the battery on a key fob themselves You can open the case of many key fobs by pressing an indentation using a flathead screwdriver or coin This allows you to remove the battery and replace it The majority of key fobs are powered by a lithiumion button cell which is readily available at most places that sell batteries including supermarkets home improvement shops and pharmacies Another reason a key fob may not function is because the buttons arent working properly Certain key fobs have an unlock button that locks the doors to the vehicle while others will unlock all the doors with one press and then close the trunk or open the trunk with a second press If you press the lock or unlock button on your key fob but it does not work is there an issue with the wiring the switch or the antenna and youll have to consult your vehicles owner manual for advice The key fob might not be receiving or transmitting the right signals to the car This could occur when the key fob is damaged or is it subjected to electromagnetic interference which could be from the pocket of your device as well as other electronic devices or even from your vehicles security system itself If you have a spare key fob thats of the same year and the same model as yours you can sometimes use it to unlock your car although its unlikely to start the engine You could also try a signal strength tester to determine if theres an area in which the signal strength is weak or intermittent Circuit Board If your key fob has stopped working first check if the battery is dead Changing the battery can be easy enough but if it doesnt solve your issue it is possible that you require having the fob changed This is a more complicated process and will vary for every vehicle It is best to have your fob reset by a professional It is also possible to replace the buttons in your key fob These buttons are likely to wear out with repeated use If you notice you need to be a bit closer than usual to unlock the car the fob should be replaced You could also use the physical key inside the fob to unlock your vehicle The next problem with the key fob is that it could be damaged due to electrical or water shock The circuit board on the key fob could cease to function because of these issues If your key fob is damaged you must consult the manufacturer regarding their warranty You can also try resetting the key fob automotive key repair can find instructions for this in your owners manual Also you can search the internet for specific instructions for your specific model and make Its a simple process but its essential to follow the right steps to avoid damaging your device Genesky claims that he is forced to turn away a lot of customers who drive Audis because they require special equipment to program their fobs Genesky says this isnt unusual for European cars as they typically have digital encryption which can only be programmed at a dealership A functional key fob is vital to moving around in the modern world But the truth is that a car key fob will eventually fail or cease to function and it can throw off your whole day By following these suggestions to repair a key fob and save yourself the headache of purchasing a new one Case Key fobs can be a fantastic convenience for car owners However they could have issues that must be fixed Some of these problems can be fixed by replacing the battery Other issues may require more work There are fortunately a few actions that can be taken to prevent major fob issues from happening in the beginning This includes keeping the fob clean and using the right kind of batteries and ensuring that the fob is kept away from magnetic fields and other electromagnetic fields A dead battery is one of the most frequent reasons for a key fob to cease to work Removing the battery is a relatively simple process that can be completed at home Most key fobs feature an indentation of a small size which you can use the screwdriver to open and replace the old battery with a brand new one Be sure to make sure you use the exact battery that is recommended by your owners manual The wrong type of battery could cause the electronics to become corroded and stop working properly Signal interference is a different problem that can cause a key fob to stop functioning This can occur when other electronic devices or security systems interfere with the signals that are transmitted between your key fob and the vehicles control unit Test this by unlocking your vehicle using an additional fob The case of a key fob can be damaged causing it to stop working properly A professional locksmith will usually fix this problem They can replace the outer case and ensure that all of the internal components are in good working order This is a less expensive alternative than purchasing a brand new one and can save you time and stress If your key fob is no longer functioning it is vital to weigh the advantages and disadvantages of a repair or replacement A quick and costeffective repair is possible however replacing usually requires programming specifically for your vehicle