https://www.openlearning.com/u/haneykrogh-skyqw5/blog/WhatIsTheReasonCarKeyRepairCostIsRightForYou How to Repair a Remote Key Although most remote key fobs have impressive battery life, they will eventually get worn out. Sometimes it's as simple as changing the batteries, however sometimes there are more serious issues. Take the remote apart and clean the buttons. Then, flex them out and in. These methods could be all that you need 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 look at the battery terminals and buttons to determine if they are any loose parts. You can usually solder the terminals and buttons back into place. However, you will have to know the type of battery is installed in the fob. If 're not sure if the battery is the problem, use a backup fob to start or unlock your car. If you're able to do so, it's probably time to replace the primary fob. If not, you will require a professional assess the fob to identify the issue. It could be as easy as reprogramming it, or require other types of repair. There's also the possibility that your vehicle has forgotten your fob, which isn't something you can fix on your own. Case Study The plastic housing that covers the outside of a remote is referred to as the case. It is usually equipped with a replacement button pad. It is essential to choose a new case as the original will probably be quite dirty and it is vital that the circuit board is placed correctly in the case. The circuit board is responsible for the operation of the key fob and can be tested using a normal multimeter by setting it to RF (radio frequency) mode and then holding a radio scanner tuned to the frequency the key fob is using next to it, watching for pulsing signals when a the button's presses. Another thing to check is the contact points for buttons on the keypad, which may have become damaged or loose over time. Soldering them back to their original po