How to Repair a Remote Key
While the majority of remote key fobs have excellent battery life, they will eventually wear out. Sometimes it's as simple as changing the batteries in the device but sometimes the issue could be more serious.
An easy fix that could help is dismantling the remote by cleaning the buttons and moving them in and out. These methods could be all that you need to get your key fob working properly.
Battery
If the fob is functioning you can replace the CR2025 or CR2032 battery. If not, inspect the battery terminals or buttons to see if there are any loose parts. You can usually solder the buttons and terminals back into place. However, you will be required to know which type of battery is installed in the fob.
If you're not sure if the battery is the issue, try using an alternate key fob and see if you can unlock or start your car with it. If you're able to then it's time to replace the primary fob. If it's not, a professional inspection is needed to figure out why it's not working correctly. remote key repair could be as simple as reprogramming, or it could require different types of repairs. You might also discover that your vehicle has lost the fob. This is not something you can fix on your own.
Case Study
The outer plastic enclosure of a remote is referred to as the case. It typically comes with a replacement button pad. It is recommended to use the latest case as the original will likely to be extremely filthy. It is crucial that the circuit board inside the case is properly positioned. The circuit board is the main component of the key fob. It can be tested using a standard multimeter by setting it to the RF (radio frequency) mode and holding a radio scanner tuned to the frequency the key fob operates on close to it, and listening for pulsing signals when a button presses.
Examine the contact points of the keys on the keypad. They could have become loose over time, or even broken. Soldering them back in place can often restore them to their original function, except if they snap completely.
Buttons
If the buttons on your key fob no longer work or are difficult to press you may need a dorman or motormite remote key housing replacement can be purchased for a low price online for your year/make and model. Then, you can take the circuit board out of the old case and into the new one. On some models, you may need to adjust the board's position slightly. Then, key repairs can use aluminum foil and double-sided tape to adhere to the black contact points on the buttons.
Programming
The key fob and receiver in your car are paired however this connection could be corrupted. A professional will assess the vehicle to determine the make, year and model and make use of specialist equipment to repair or program the fob with a blank transponder chip (or duplicate a key in the event that it is possible). Then they will test the remote to be sure that it works.
When reprogramming keys that are blank it is crucial to be careful. The process can be complex and each manufacturer has different instructions. It is easy to skip a step or to take too long before exiting the programming mode. To minimize the risk of damaging your car, it is best to work with a professional who has vast knowledge of the security system of your vehicle. Some key programming tools are also capable of analyzing diagnostic trouble codes from your vehicle. This can help repair or troubleshoot other issues.