How to Repair a Remote Key
Even though most remote key fobs have an impressive battery life, they do eventually wear out. Sometimes it's as simple as changing the batteries, however sometimes there are more serious problems.
A quick fix that can help is taking apart the remote and cleaning the buttons before stretching them out and in. These steps could be all you require to get your key fob working properly.
Battery
Car key remotes are powered by CR2025 or CR2032 batteries and they can be swapped out if the fob is still operational. If not, look at the battery terminals and buttons to determine if they are any loose parts. Often the terminals and buttons can be re-soldered back into place, but you'll need to be aware of the exact type of battery is used by your fob.
If the battery isn't the problem, try using an alternate key fob and see if you can unlock or start your car with it. If you can, it's probably time to replace your primary fob. If it's not require replacement, you'll need to have a professional examine it to find the problem. It could be as simple as reconfiguration, or it may require other types repair. There's also the possibility that your vehicle forgotten your fob and isn't something you can fix on your own.
Case Study
The case of a remote key is the plastic housing that covers the outside and usually comes with the button pad that is replaced. It is crucial to get a new case as the original case is likely to be a bit shabby and it is crucial that the circuit board is installed properly in the case. The circuit board is responsible for the operation of the key fob. It can be tested using a standard multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the same frequency that the key fob uses close to it, and listening for signals that pulsate upon pressing the button.
Check the contact points on the keys on the keypad. They could have become loose over time, or even broken. By carefully re-soldering them back into place will often restore the functionality of the keypad unless they snap off completely.
Buttons
If your key fob buttons aren't working anymore or are difficult to press, you can buy an alternative dorman or Motormite remote key housing online for an affordable price for your model/year/make. Then pop the circuit board out of your old case into the new. You may have to slightly adjust the position of your circuit board on certain models. The black contact points of the buttons can be bonded to with aluminum foil and double-sided tape.
Programming
The key fob and receiver in your car are paired however this connection could be ruined. A professional will examine your vehicle to determine its make, year, and model. They will then employ specialist equipment to reconnect or program the transponder chip with a blank fob (or copy the key if possible). They will then test the remote to make sure that it works.
It is important to be cautious when reprogramming the blank key, because the process can be a bit complicated and different brands require distinct steps. car key repair cost is also easy to miss a step or wait too long before exiting the programming mode, which is why it is best to use professionals with extensive knowledge of your car's security system to minimize the risk of damaging the car. Some key programming tools can also read diagnostic trouble codes on your vehicle. This will help you fix or resolve other issues.