How to Repair a Remote Key
Although most remote key fobs boast amazing battery lifespan, they eventually get worn out. Sometimes it's as easy as changing the batteries, however sometimes there are more serious problems.
Take apart the remote and clean the buttons. Then move them out and in. These techniques may be all you need to get your key fob working properly.
Battery
Car key remotes are powered by CR2025 or CR2032 batteries, and they can often be swapped out when the fob is operational. If it isn't, you can open the fob and check the buttons and battery terminals to look for signs of wear or broken parts. You can usually solder the terminals and buttons back into their original positions. However, you'll be required to know which type of battery is used in your fob.
If you're unsure if the battery is at fault you can use a backup fob to unlock or start your car. If it's possible, it's time for a replacement of the primary fob. If it's not then you'll require a professional inspect it to determine the issue. It could be as simple as reset, or it could require other types repair. There's also the possibility that your vehicle forgotten your fob that you can fix on your own.
Case
The case of a remote key is the plastic housing that covers the outside and typically comes with a button pad that is replaced. It is best to use a brand new case, as the original will likely to be extremely filthy. Additionally, key fob repairs is crucial that the circuit board within the case is properly positioned. The circuit board is what determines the function of the key fob. You can test it with a multimeter set to RF (radiofrequency) mode and a radio scanner that is tuned to the same frequency as the key fob.
Another thing to look at is the contact points for buttons on the keypad, which could be loose or damaged in the course of time. A careful soldering process to put them back in place can often return them to full functionality unless they snap off completely.
Buttons
IF your key fob buttons do not function anymore or are difficult to press you may need a dorman or motormite remote key housing replacement could be bought inexpensively online for the year, make and model of your. Then, pop the circuit board from your old case and insert it into the new one. In some cases you may have to adjust the position of the board slightly. The black contact points of buttons can be adhered to with aluminum foil and double-sided tape.
Programming
The key fob is connected with the receiver of your vehicle. This connection can be corrupted. A professional will assess 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 possible). They will then test the remote to confirm that it functions.
When reprogramming keys that are blank it is essential to take care. The process can be complicated and each manufacturer offers distinct instructions. It is also possible to miss a step or wait too long before exiting the programming mode, which is why it is recommended to hire an expert with a thorough understanding of your car's security system to avoid damaging the car. Certain programming tools are also capable of analyzing diagnostic trouble codes from your vehicle, which can aid in repairing or resolving additional problems.