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How to Repair a Remote Key While most remote key fobs are equipped with impressive battery lives they'll eventually get worn out. Sometimes it's as simple as replacing the batteries inside the device, however sometimes the issue could be more serious. Remove the remote from the unit and clean the buttons. Then bend them in and out. These steps could be all that you require to get your key fob back in working order. Battery Car key remotes utilize CR2025 or CR2032 batteries, and they can often be swapped out in the event that the device is functional. If not, you can look at the battery terminals and buttons to determine if there are any missing parts. The terminals and buttons can be re-soldered back into place however you'll need be aware of the exact type of battery your fob uses. If you're not sure if the battery is the problem, use a backup fob to unlock or start your vehicle. If you are able to do so, it's time to replace the primary fob. If not, a professional inspection is needed to figure out why it's not functioning properly. Learn Additional Here could be as simple as reprogramming or it may require other repairs. There's also the possibility that your car has lost your fob, which isn't something you can fix yourself. Case The case of a remote key is the plastic case that surrounds it and usually comes with the replacement button pad. It is crucial to get a new case as the original case is likely to be pretty grungy 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. It can be tested with a normal multimeter by setting it to RF (radio frequency) mode and then holding a radio scanner tuned to the same frequency the key fob uses close to it, and listening for pulsing signals when a button presses. Another thing to look at is the contact points for buttons on the keypad. They might have become damaged or loose in the course of time. A careful soldering process to put them back in place will often restore the functionality of the keypad unless they completely snap off. 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 could be purchased for a low price online for the year, make and model of your. Then pop the circuit board out of your old case into the new one. Suggested Looking at is possible to adjust the position of your circuit board on certain models. Then, you can use aluminum foil with double sided tape to stick to the black contact points on the buttons. Programming The key fob and the receiver in your car are connected however, this connection may be damaged. A professional will inspect your car to determine its make, year and model. They'll then use specialist equipment to reconnect or program an unmodified transponder chip or fob (or clone the key if that is possible). They will then test the remote to make sure that it works. When programming blank keys it is essential to take care. The process is complicated and each manufacturer comes with distinct instructions. It is also possible to miss a step, or delay too long before leaving the programming mode, which is why it is recommended to hire a professional with comprehensive knowledge of your car's security system to minimize the risk of damaging your car. Certain key programming tools can also identify diagnostic trouble codes in your vehicle. This will help you fix or resolve other issues.