How to Repair a Remote Key
Although many remote key fobs come with amazing battery life, they do eventually wear out. Some times it is simple to replace the batteries in the device but sometimes the problem can be more serious.
Take the remote apart and clean the buttons. Then, flex them out and in. These methods could be all that you require to get your key fob working again.
Battery
If the fob is still functioning you can replace the CR2025 or CR2032 battery. If not, you can examine the battery terminals or buttons to determine if they are any parts that are loose. You can usually solder the buttons and terminals back in place. However, you will be required to know which kind of battery is being used in your fob.
If you're unsure whether the battery is the problem then utilize a backup fob in order to unlock or start your car. If you are able to do so, it's time to replace the primary fob. If it's not, a professional inspection is necessary to determine the reason it's not working correctly. car key fob repairs could be a simple reprogramming, or it could require other types of repairs. There's also the possibility that your vehicle lost 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 the replacement button pad. It is recommended to purchase the latest case as the original case is likely to be quite grungy. Also, it is vital that the circuit board inside the case is properly positioned. The circuit board determines the function of the key fob. You can test it using 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. Soldering them back in place can often restore them to full function, unless they snap completely.
Buttons
If the buttons on your key fob aren't working or are difficult to press, you can buy a new dorman or motormite remote key housing online at a low price for your model/year/make. Then, simply pop the circuit board out of your old case into the new one. You may need to adjust the position of the board on some models. The black contact points of the buttons can be adhered to using aluminum foil and double-sided tape.
Programming
The key fob and 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 make use of specialist equipment to repair or program an empty fob or transponder chip (or duplicate a key if this is possible). They will then test the remote to confirm that it functions.
It is important to be cautious when programming an unprogrammed key, since the process is often complicated and different manufacturers require distinct steps. It is also possible to skip a step or take too long to exit the programming mode, which is why it is best to use a professional with comprehensive knowledge of your car's security system to avoid damaging your car. Certain programming tools that are essential to use can also identify diagnostic trouble codes on your vehicle. This can help you solve other issues.