How to Repair a Remote Key
Although most remote key fobs have amazing battery lives, they will eventually wear out. Some times it is as simple as replacing the batteries inside the device but sometimes the issue can be more serious.
One quick fix that may help is taking apart the remote, cleaning the buttons and flexing them in and out. These steps could be all that you require to get your key fob working properly.
Battery
If the fob continues to working it is possible to swap out the CR2025 or CR2032 battery. If it's not, you can open the fob and inspect the battery terminals and buttons for any signs of looseness or damaged parts. You should be able to connect the terminals and buttons back into place. However, you'll be required to know which type of battery is used in the fob.
If you're unsure if the battery is at fault, make use of a backup fob to start or unlock your vehicle. If you can, then it's time to replace your primary fob. If not, a professional inspection is needed to figure out why it's not working correctly. It could be as simple as reprogramming or it may require other repairs. There's also the possibility that your vehicle forgotten your fob and isn't something you can fix yourself.
Case
The case of a remote key is the plastic case that surrounds it and typically comes with a button pad replacement. It is essential to choose an entirely new case since the original one is likely to be quite dirty, and it is essential that the circuit board is installed properly in the case. The circuit board is what determines the function of the key fob. You can test it with an instrument set to RF (radiofrequency) mode and a radio scanner that is tuned to the same frequency as the key fob.
Examine the contact points of the buttons on the keypad. They may have become loose over time or broken. Carefully soldering them back in place will often restore them to their original function unless they snap off completely.
Buttons
If the buttons on your key fob don't work anymore or are difficult to press you may need a dorman or motormite remote key housing replacement could be purchased online for a reasonable price for the year/make/model you have. Then, pop the circuit board out of your old case and into the new one. You may need to adjust the position of your circuit board on certain models. You can then use aluminum foil using double-sided tape to adhere it to the black contact points on the buttons.
Programming
The key fob is connected with the receiver in your vehicle, and this connection could be damaged. A professional will examine the car to determine the make model, year and model. key fob repairs will employ specialist equipment to re-pair or program the fob with a blank transponder chip (or duplicate a key in the event that it is possible). Then they test the remote to make sure that it works.
When reprogramming keys that are blank, it is important to take care. The process can be complicated and each manufacturer offers distinct instructions. It is also possible to skip a step or take too long to exit the programming mode, so it is recommended to hire an expert with a thorough understanding of your car's security system to reduce the chance of damaging the car. Certain key programming tools can also read diagnostic trouble codes in your vehicle. This can assist you to solve other issues.