A Good Rant About Remote Key Repair
How to Fix a Key Fob That isn't Working
If your key fob isn't working There are a few simple steps that can fix it. First, make sure that it's not the backup remote.
If the backup can lock and unlock your car doors, then there's a likely issue with the main remote. Most problems with car remote keys are caused by circuitry or battery issues.
Battery
The battery inside the key fob may wear out over time. It is easy to replace batteries. However, it is important that you use the correct type. You can refer to the owner's manual or contact the manufacturer to find out the correct type. It is also important to examine the battery compartment, as batteries that are not working properly can release caustic chemicals that can harm the remote. If replacing the batteries doesn't solve the issue it could be that there are other issues that require professional attention. If buttons are broken or stuck, for example, it may be necessary take the remote apart and rework each component. You could also try reprogramming the vehicle to recognize the new fob.
Buttons
Through frequent use, key fobs may wear out and become dirty. It is not unusual to have buttons stop functioning, or require a long press to get them working. This can be very frustrating especially if you're away from home and need to start your vehicle. Even worn-out or malfunctioning buttons are often fixable with a bit of time and the tools you already have at home.
First, check that the batteries are properly inserted and that the indentation on the back of the button is filled. Then, carefully open the remote and inspect the circuit board. Check for signs of corrosion or other indications that the buttons are worn or damaged, such as missing paint that is conductive. Utilizing the Q-tip, dipped in rubbing alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Be careful not to rub too hard, as this can erode the conductive paint and stop the button from firing when pressed.
Also, be sure to check the battery connector's terminals to ensure any loose solder connections. Soldering them back into place will restore the button's functionality in the event that this is the case. The same process can be used to restore function to any loose connections within the fob.
Finally, if any of the buttons made of rubber that are on the front of the key fob have stopped working or require a very difficult press to function it is likely that the graphite disks that are on the back of the button are wearing down and require replacement. This is usually done by rubbing a pencil across the disks. This should bring the button back to its original state.
If mobile car key repair near me of this doesn't help, or if the button still does not respond to a hard press, then it may be because the circuit board itself has gone bad. This can be fixed with a quick clean and replacing the solder, but it is recommended to have an additional fob on hand in the event that this method doesn't work for you.
Circuitry
If the keys fob buttons are functioning the circuit board that is inside the remote could be dirty. A very thorough inspection will usually resolve this problem. Broken and damaged cases are the most frequent causes of dirty boards. A broken case can let water and other debris to enter the circuit board, which can cause it to short out. Water can also get through pins and vias, which are tiny connectors that are found on the board.
If you're able to open your key fob, and aren't afraid of making an mess, you can remove the buttons from their sockets and put in new ones. It's also worth examining the battery terminal connections. They can become very dirty and if they're loose the buttons might not function or even stick in their down position. Soldering the terminals and buttons back into place is typically all that's required to return keys that are not in working condition.
Non-Remote transponder chips
Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, but they can be damaged by a hole that is made in them or pushed over by a lawnmowers blade or door handle for a car. Fuse failures are usually the cause of non-remote chip failures.
If you're able to open up a key fob that is sealed and can tolerate the mess, you can remove the circuit board and test the fuse with a multimeter for proper diode function. If you're not sure with this, you can go to your local Oreilly or hardware store and use their RF frequency tester. This will let you know whether the key fob transmits signals.
Programming
Key fobs are subject to a lot of abuse and aren't indestructible. They may lose their connection with the receiver in your vehicle because of shocks or a low battery, which calls for the reprogramming. A professional auto locksmith or the main dealer can reprogram your key fob and get it back working again. In the event that resetting and fixing your key fob isn't working it may be time to replace it completely.