10 Real Reasons People Hate Key Repair

How to Repair a Remote Key
Although most remote key fobs are equipped with amazing battery lives, they'll eventually get worn out. Sometimes it's as easy as changing the batteries, but sometimes there are more serious problems.
key repairs that can help is dismantling the remote and cleaning the buttons before moving them in and out. These methods could be all you need to get your key fob working.
Battery
Car key remotes are powered by CR2025 or CR2032 batteries, and they can often be swapped out in the event that the device is functional. If it's not, you can open the fob and examine the battery terminals and buttons to look for signs of wear or damaged parts. Often the terminals and buttons can be re-soldered back into place but you'll need be aware of the type of battery your fob uses.
If you're not sure if the battery is the issue you can make use of a backup fob to start or unlock your car. If you can, it's probably time to replace your primary fob. If it's not, you will require a professional to examine it to find the issue. It could be as simple as reconfiguration, or it may require other types of repair. There's also the possibility that your vehicle has lost your fob and isn't something you can fix yourself.
Case Study
The outer plastic enclosure of a remote is called the case. It usually comes with an additional button pad. It is recommended to purchase a brand new case, since the original one will likely to be extremely grungy. Also, it is vital that the circuit board inside the case is properly positioned. The circuit board is responsible for the operation of the key fob and is tested using a standard multimeter by setting it to RF (radio frequency) mode and then holding a radio scanner tuned to the frequency the key fob uses next to it, watching for pulsing signals when a the button's presses.
Check the contact points on the buttons on the keypad. They may be loose over time or have been damaged. Soldering them back to their original position can often restore them to their original functionality, except if they snap completely.
Buttons
If the buttons on your key fob aren't working or are difficult to push, you can purchase a new dorman or motormite remote key housing online for the lowest cost for the model/year/make. Then, simply pop the circuit board out of your old case into the new one. You may need to adjust the position of the board on some models. The black contact points of buttons can be adhered to with aluminum foil and double-sided tape.
Programming
The key fob and receiver inside your car are linked, but this connection can be corrupted. A professional will examine your vehicle to determine its year, make, and model. They will then employ special equipment to reconnect or program the transponder chip with a blank fob (or copy the key if that is possible). They will then test the remote to confirm 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 distinct instructions. It is also easy to skip a step or delay too long before leaving the programming mode, therefore it is recommended to work with an expert with a thorough understanding of your car's security system to avoid damaging the car. Certain key programming tools can also read diagnostic trouble codes in your vehicle. This can help you repair or troubleshoot other issues.