How to Repair a Remote Key
While most remote key fobs have impressive battery lives they will eventually wear out. Some times it is as simple as changing the batteries inside the device but sometimes the issue could be more serious.
Remove the remote from the unit and clean the buttons. Then, flex them in and out. These methods could be all that you need to get your key fob back in working order.
Battery
If the fob is still working it is possible to swap out the CR2025 or CR2032 battery. If it isn't, you can open the fob and check the battery terminals and buttons for any indication of looseness or damaged parts. It is usually possible to solder the terminals and buttons back into their original positions. However, you will have to know the type of battery is used in your fob.
If you're unsure if the battery is the issue, utilize a backup fob in order to unlock or start your vehicle. If you are able to do so, it's time to replace your primary fob. If it's not then you'll require a professional inspect it to determine the problem. It could be as easy as reprogramming, or it could require other types of repair. There's also car key repair near me that your vehicle lost your fob that you can fix on your own.
Case Study
The case of a remote key is the outer plastic housing and usually comes with the button pad that is replaced. It is best to use a brand new case, as the original is likely to be very filthy. Also, it is vital that the circuit board inside the case is properly positioned. The circuit board is responsible for the function of the key fob. It is tested using a normal multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the frequency the key fob is using next to it, watching for signals that pulsate upon button presses.
Another thing to check is the contact points for buttons on the keypad. They may have become loose or broken in the course of time. Soldering them back in place can often restore them to full function, unless they break completely.
Buttons
If the buttons on your key fob do not function anymore or are difficult to press for any reason, a motormite or dorman remote key housing replacement can be bought inexpensively online for the year/make/model you have. Then, pop the circuit board out of the old case and into the new one. In some cases you may have to move the board slightly. You can then use aluminum foil using double-sided tape to stick to the black contact points on the buttons.
Programming
The key fob is connected with the receiver inside your vehicle and this connection could be damaged. A professional will examine your vehicle to determine the year, make and model. They will then use special equipment to reconnect or program the transponder chip with a blank fob (or duplicate the key, if possible). Then, they test the remote to be sure it functions.
When reprogramming keys that are blank it is crucial to take care. The process is complicated and each manufacturer comes with distinct instructions. It is also possible to miss a step or wait too long before exiting the programming mode, therefore it is recommended to hire an expert with a thorough understanding of the security system of your vehicle to reduce the chance of damaging your car. Some key programming tools can also be capable of analyzing diagnostic trouble codes from your vehicle, which could assist in fixing or resolving any additional problems.