How to Repair a Remote Key

While most remote key fobs come with amazing battery lives, they'll eventually get worn out. Sometimes it's as simple as changing the batteries, however sometimes there are more serious issues.

car key repairs that could help is taking apart the remote and cleaning the buttons before flexing them in and out. These methods could be all you require to get your key fob working again.

Battery

If the fob is functioning it is possible to swap out the CR2025 or CR2032 battery. If it isn't then you can remove the fob and examine the battery terminals and buttons for any signs of looseness or damaged parts. You can usually connect the terminals and buttons back into their original positions. However, you'll have to know the type of battery is installed in your fob.

If the battery isn't the issue, try using an alternate key fob and see if you can start or unlock your vehicle with it. If you can do so, it's probably time to replace your primary fob. If not, a professional inspection is necessary to determine the reason it's not working properly. It could be as easy as reprogramming, or it could require different types of repairs. There's also the possibility that your vehicle has forgotten your fob and isn't something you can fix yourself.

Case Study

The plastic housing that covers the outside of a remote is known as the case. It typically comes with an additional button pad. It is recommended to use the latest case because the one you have will likely to be extremely dirty. It is crucial that the circuit board inside the case is properly positioned. The circuit board is the main component of the key fob and can be tested with a normal multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the frequency the key fob uses close to it, and listening for pulsing signals when a button presses.

Another thing to check is the contact points for buttons on the keypad. They could be loose or damaged over time. Soldering them back into place will often allow them to return to full functionality, unless they snap completely.


Buttons

If the buttons on your key fob are no longer working or are difficult to press, you can buy a new dorman or motormite remote key housing online for a low cost for the model/year/make. Then, take the circuit board out of the old case and insert it into the new one. For certain models it may be necessary to move the board slightly. The black contact points of the buttons can be adhered to using aluminum foil and double-sided tape.

Programming

The key fob is linked with the receiver in your vehicle, and this connection can be corrupted. homesite will inspect the vehicle to determine the make of the vehicle, year of manufacture and model. They employ specialist equipment to re-pair or program the fob with a blank transponder chip (or clone a key if this is possible). They will then test the remote to make sure that it works.

When reprogramming keys that are blank it is essential to be careful. The process can be complicated and each manufacturer comes with slightly different instructions. It is easy to miss a crucial step or to wait too long before exiting the programming mode. To reduce the chance of causing damage to your vehicle it is recommended to work with a professional who has vast knowledge of the security system in your vehicle. Certain key programming tools can also read diagnostic trouble codes in your vehicle. This can assist you to solve other issues.