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How to Fix a Key Fob That isn't Working If your key fob won't work then you can fix it by following a few simple steps. The first step is to make sure it's not the backup remote. If your backup remote cannot lock and unlock the doors of your car, then it is likely that the primary remote isn't working. The most common causes of car remote key failure are battery or circuitry issues. Battery It is not unusual to find a battery on the key fob for cars to degrade. It is quite simple to change out the battery, however it is essential to ensure that you select the correct one that you can refer to your owner's manual or contact the manufacturer's dealer to find out what kind of battery you need. It is also important to check the battery compartment, as dead batteries can leak toxic chemicals that could damage the remote. If changing the battery doesn't fix the problem there may be additional issues that require professional attention. If the buttons are damaged or stuck, for example, it may be necessary remove the remote and rebuild each component. You could also try reprogramming the vehicle to recognize the new key fob. Buttons Through repeated use, key fobs can wear out and become dirty. It is not uncommon for buttons to cease working, or to require a hefty press to make them work. This can be a huge hassle particularly if you're out of town and need to start your vehicle. Fortunately, even worn out or broken buttons can usually be fixed with a little time and some of the materials you might already have in the house. First, make sure the batteries are charged correctly and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Check for evidence of rust, or other signs the buttons are worn or damaged. For electronic key repair near me , conductive paint may be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contacts that are worn or have conductive paint missing. Do not rub too vigorously in order to damage the conductive paint, and block the button from firing when pressed. Examine the battery connector's terminals for loose solder connections. If this is the case, simply soldering them back in place may bring back function to the button. You can apply the same procedure to restore functionality to any other loose connection within the fob. If any of the rubber buttons at the front of the keyfob are not working or require being pressed extremely hard, the graphite disks at the back of the button might have worn out and will need to replaced. This can usually be done by rubbing a pencil across the disks, which should bring the button back to life. If none of these solutions work or you are unable to get the button to respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix this by cleaning and re-soldering your fob however, you should have another spare in case it does not work. Circuitry If the key fob buttons function the circuit board that is inside the remote could be dirty. A thorough inspection is often enough to resolve this problem. The most frequent causes of dirty circuit boards is water and broken cases. A damaged case can let water and other debris to get into the circuit board, which can cause it to short out. Water can also eat through pins and vias, which are tiny connectors on the board. If you're handy enough to open up your key fob and aren't afraid of making a mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth looking at the battery terminal connections. They can become very dirty and if they're loose the buttons may not work or even stay in their down position. Soldering the terminals and button's back in their place is generally all that's needed to return the key fob that is not working to working order. Non-Remote Transponder Chips The sealed non-remote chips are more durable than remote fobs, however they are susceptible to cracking when a hole is made into them or in the event that a door handle of a car or lawnmowers plows over them. Most of the time, non-remote transponder chip failures could be attributed to blowing fuses. If you're not confident opening the key fob, remove the circuitboard and utilize a multimeter to determine if the diode is functioning correctly. If you're not confident doing this, head to your local hardware store or Oreilly's and they'll usually have an RF frequency tester that will let you know whether the key fob sending a signal. Programming Key fobs are subject to many abuses and aren't impervious to damage. They may lose their connection with the receiver in your vehicle due to shocks or a low battery, which calls for reprogramming. A professional auto locksmith or main dealer, can reprogram your keyfob and get it up and running again. If, in the unlikely event that resetting or repairing your key fob doesn't work, it could be time to replace it all over again.
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