How to Repair a Remote Key
Even though most remote key fobs have amazing battery life, they do eventually get worn out. Sometimes it's as simple as replacing the batteries, but sometimes there are more serious problems.
Remove the remote from the unit and clean the buttons. Then bend them out and in. These methods could be all you need to get your key fob back in working order.
Battery
If the fob is still working you can replace the CR2025 or CR2032 battery. If it's not then you can remove the fob and check the buttons and battery terminals to look for signs of wear or damaged parts. You should be able to solder the buttons and terminals back into their original positions. However, remote car key repair near me will be required to know which type of battery is used in your fob.
If you're not sure if the battery is the issue, try using an alternative key fob and see if you can unlock or start your car using it. If you are able to do so, it's time to replace your primary fob. If not, you will need to have a professional examine it to find the problem. It could be as simple as reprogramming, or it could require different types of repairs. There's also the possibility that your vehicle has lost your fob and isn't something you can fix on your own.
Case
The plastic housing that covers the outside of a remote is referred to as the case. It typically comes with an alternative button pad. It is recommended to use an entirely new case since the original one case is likely to be quite grungy. Additionally, it is vital that the circuit board inside the case is placed correctly. The circuit board is responsible for the function of the key fob. It can be tested with a normal multimeter by setting it to RF (radio frequency) mode and then holding a radio scanner tuned to the frequency the key fob is using close to it, and listening for pulsing signals upon the button's presses.
Check the contact points on the buttons on the keypad. They could be loose over time or broken. Carefully soldering them back in their original position can usually restore them to full functionality unless they snap off completely.
Buttons
If your key fob buttons aren't working or are difficult to press, you can buy an alternative dorman or Motormite remote key housing online at an affordable cost for the model/year/make. Then, pop the circuit board out of your old case and insert it into the new one. On some models it may be necessary to adjust the board's position slightly. The black contact points of the buttons can be bonded to aluminum foil using double-sided tape.
Programming
The key fob and receiver in your car are connected however this connection could be damaged. A professional will assess your car to determine the year, make, and model. They will then use special equipment to reconnect or program an unmodified transponder chip or fob (or copy the key if possible). Then, they test the remote to make sure it works.
When reprogramming blank keys it is crucial to be careful. The process is complex and each manufacturer has slightly different instructions. It is also possible to miss a step, or wait too long before exiting the programming mode, therefore it is best to use an expert with a thorough understanding of the security system of your vehicle to reduce the chance of harming the car. Certain programming tools also have the capability of reading diagnostic trouble codes from your vehicle, which can assist in fixing or resolving any additional issues.