How to Repair a Remote Key
Even though most remote key fobs boast an impressive battery life, they will eventually degrade. 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. car key remote repair might be all you need to get the key fob to work.
Battery
If the fob continues to working you can replace the CR2025 or CR2032 battery. If not, you can open the fob and check the batteries' terminals and buttons to look for signs of wear or broken parts. You can usually solder the buttons and terminals back into place. However, you'll need to know what type of battery is installed in the fob.
If you're not sure whether the battery is at fault then utilize a backup fob in order to start or unlock your car. If it's possible, it's time for a replacement of the primary fob. If not then you'll require a professional examine it to find the issue. It could be as simple as reprogramming it, or require other types of repair. You might also discover that your vehicle has lost the fob. This is not something you can fix on your own.
Case Study
The plastic housing that covers the outside of a remote is called the case. It usually comes with an additional button pad. It is essential to choose an entirely new case since the original one is likely to be a bit shabby and it is vital that the circuit board is set properly in the case. The circuit board controls the key fob's function. You can test it with an instrument set to RF (radiofrequency) mode and a scanner that is tuned to the same frequency as the key fob.
Check the contact points of the buttons on the keypad. They could be loose over time or have been damaged. A careful soldering process to put them back in their original position can usually restore them to their original function unless they break completely.
Buttons
If the buttons on your key fob aren't working anymore or are difficult to press, you can buy a replacement dorman or Motormite remote key housing on the internet at a an affordable cost for the model/year/make. Then, pop the circuit board out of the old case and into the new one. In some cases it may be necessary to move the board slightly. The black contact points of the buttons can be adhered to with aluminum foil and double-sided tape.
Programming
The key fob and the receiver in your car are paired, but this connection can be damaged. A professional will assess the vehicle to determine the make of the vehicle, year of manufacture and model. They employ specialist equipment to re-pair or program an empty fob or transponder chip (or make a key replica in the event that it is possible). They will then test the remote to make sure that it functions.
When reprogramming keys that are blank it is essential to take care. remote key fob repair is complicated and each manufacturer comes with different instructions. It is easy to miss a crucial step or to wait too long to exit the programming mode. To reduce the chance of damaging your car, it is best to employ an expert who has extensive knowledge of the security system in your vehicle. Some key programming tools also have the capability of reading diagnostic trouble codes from your vehicle, which can help repair or troubleshoot further problems.