How to Repair a Remote Key
Although many remote key fobs come with impressive battery life, they do eventually get worn out. Sometimes it's as simple as replacing the batteries, but sometimes there are more serious problems.
Take apart visit this site and clean the buttons. Then bend them out and in. These methods could be all you need to get the key fob working.
Battery
If the fob is functioning it is possible to swap out the CR2025 or CR2032 battery. If not, look at the battery terminals and buttons to see if there are any parts that are loose. Most of the time, the buttons and terminals can be re-soldered back into place, but you'll need to be aware of the exact kind of battery is used by your fob.
If the battery isn't the problem, try using an alternate key fob to see whether you can start or unlock your vehicle with it. If it's possible, it's time to replace your primary fob. If it's not require replacement, you'll need to have a professional assess the fob to identify the problem. It could be as simple as reprogramming, or it could require other repairs. There's also the possibility that your vehicle lost your fob that you can fix yourself.
Case Study
The outer plastic housing of a remote is known as the case. It typically comes with an additional button pad. It is important to use a new case, as the original one is likely to be pretty grungy and it is vital that the circuit board is placed correctly inside the case. The circuit board is responsible for the operation of the key fob and is tested using a normal multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the same frequency that the key fob is using next to it, listening for pulsing signals when a button presses.
Another thing to check is the contact points for buttons on the keypad. These could have become damaged or loose in the course of time. By carefully re-soldering them back into place will often restore them to full functionality unless they break completely.
Buttons
IF your key fob buttons no longer work or are difficult to press for any reason, a motormite or dorman key housing replacement for your remote can be purchased online for a reasonable price for the year/make/model you have. Then, pop the circuit board from your old case and put it into the new one. In some cases you may have to move the board slightly. The black contact points of the buttons can be adhered to using aluminum foil and double-sided tape.
Programming
The key fob is paired with the receiver inside your vehicle. This connection can be corrupted. A professional will inspect the vehicle to determine the make model, year and model. They will use specialist equipment to re-pair or program a blank fob or transponder chip (or clone a key if this is possible). Then, they test the remote to be sure that it works.
When reprogramming blank keys, it is important to take care. The process is complicated and each manufacturer offers distinct instructions. It is easy to skip a step or wait too long to exit the programming mode. To avoid the risk of damaging your vehicle, it is best to employ an expert who has vast knowledge of the security system of your vehicle. Certain programming tools that are essential to use can also read diagnostic trouble codes in your vehicle. This will help you repair or troubleshoot other issues.