How to Fix a Key Fob That isn't Working

If your key fob won't work and you're not sure why, you can fix it by following some simple steps. First, ensure that it's not your backup remote.

If the backup remote is able to lock and unlock your car doors, then there is likely an issue with the primary remote. Most problems with car remote keys result from circuitry or battery problems.

Battery

It is not uncommon for the battery in a key fob for cars to get worn out. It is quite simple to change out a battery, although it is essential to make sure that you use the right type; you can look in your owner's manual, or contact the dealer of the manufacturer to determine the type of battery you require. It is also crucial to check the battery compartment, since batteries that are not working properly can release caustic chemicals which can damage the remote. If replacing the batteries doesn't solve the issue it could be because there are other issues that require professional attention. If the buttons are broken or stuck for instance it could be necessary to take the remote apart and rework each component. You can also try reprogramming the vehicle to recognize the new fob.

Buttons

From repeated use, key fobs could become worn and dirty. This is not atypical, but it can cause buttons to stop working or require a very difficult press to get them to function. This can be very frustrating especially when you're away from your home and you need to turn on your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you might already have in the house.

First, verify that the batteries are properly inserted and that the indentation on the back of the button has been filled. Then, carefully open the remote and examine the circuit board. Look for signs of rust or other indications that the buttons are damaged or worn out. For instance the paint that conducts electricity could be missing. Then, using a Q-tip dipped in alcohol to gently clean any membrane contacts that have become damaged or have conductive paint missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and stop the button from firing when pressed.

Check the battery connector's terminals for loose solder connections. Soldering them back in place will allow the button to function again If this is the situation. You can follow the same procedure to restore functionality to any other loose connection within the fob.

In the end, if any of the rubber buttons on the front of the key fob aren't working or require a very long press to function, it is likely that the graphite disks that are on the back of the button are deteriorating and need to be replaced. This can usually be done by rubbing a pencil on the disks, which will bring the button back to its original state.

If none of this is helpful or if the button does not respond to a hard press It could be because the circuit board itself has become damaged. This can be fixed with a quick clean and replacing the solder, but it is ideal to have a spare fob available in the event this method fails for you.

Circuitry

If the key repairs near me fob buttons function, the circuit board inside your remote might be dirty. A thorough inspection is usually enough to fix this issue. The most frequent causes of dirty circuit boards are water and damaged cases. A broken key repair near me case allows water and other debris Where To Repair Car Key Remote enter and short out the electronics. Water can also eat away at pins and connectors that are small on the board called via's.

If you're able to open your key fob, and don't mind making an mess, you can take the buttons out of their sockets and solder in new ones. It's also worth checking the connections between the battery terminals. They can get very dirty and if they're loose the buttons might not work or even stick in their down position. Soldering the terminals and buttons back in place is usually all that's needed to return a non-working key fob to functioning condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are more durable than remote fobs that contain them however they are still susceptible to being cracked by a hole made in them or pushed over by a lawnmower or car remote key repair near me door handle. Failures of the fuse are typically the cause of non-remote chip failures.

If you're not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to verify that the diode is operating correctly. If you're unsure about doing this, visit your local hardware store or Oreilly's and they'll usually have a radio frequency tester that can let you know whether the key fob is transmitting a signal.

Programming

Key fobs endure lots of abuse and aren't completely indestructible. They can break their connection with the receiver inside your vehicle because of shocks or a low battery, which calls for changing the program. A professional auto key fob repair locksmith or main dealer, can reprogram your key fob and get it back working again. If resetting or repairing your keyfob does not work, you may need to replace it.