How to Repair a Remote Key
Although most remote key fobs have excellent battery life, they'll eventually run out of battery. Sometimes it's simple to replace the batteries in the device but sometimes the problem can be more serious.
One quick fix that may aid is to disassemble the remote by cleaning the buttons and flexing them in and out. These methods could be all that you require to get your key fob working again.
Battery
If the fob is functioning, you can swap out the CR2025 or CR2032 battery. If not, look at the battery terminals and buttons to determine if they are any loose parts. The terminals and buttons can be re-soldered back into place, but you'll need to be aware of the kind of battery your fob uses.
If you're unsure if the battery is at fault, 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 then you'll need to have a professional examine it to find the problem. It could be as simple as reconfiguration, or it may require other types of repairs. You might also discover that your vehicle has forgotten the fob. This is not something you can do on your own.
Case Study
The outer plastic housing of a remote is known as the case. It usually comes with an alternative button pad. It is best to use the latest case since the original one will likely to be extremely dirty. Also, it is crucial that the circuit board within the case is properly positioned. The circuit board is responsible for the function of the key fob. It can be tested using a normal multimeter by setting it to RF (radio frequency) mode and holding a scanner tuned to the same frequency that the key fob operates on next to it, listening for pulsing signals upon button presses.
Examine the contact points of the buttons on the keypad. They may be loose over time or have been damaged. A careful soldering process to put them back in place can often return them to their original function unless they snap off completely.
Buttons
IF your key fob buttons don't work anymore or are difficult to press for any reason, a motormite or dorman key housing replacement for your remote can be bought inexpensively online for your year/make and model. Then, take the circuit board from your old case and insert it into the new one. On some models you may have to move the board slightly. The black contact points of the buttons can be adhered to with aluminum foil and double-sided tape.
Programming
The key fob and receiver inside your car are paired, but this connection can be damaged. A professional will inspect your vehicle to determine its year, make, and model. They will then use special equipment to reconnect or program an unmodified transponder chip or fob (or clone the key if possible). They will then test the remote to ensure that it works.
When reprogramming blank keys, it is important to take care. vehicle key repairs TheKeyLab can be complicated and each manufacturer comes with different instructions. It is easy to miss a key step or wait too long before exiting the programming mode. To minimize the risk of causing damage to your vehicle, it is best to hire a professional who has vast knowledge of the security system in your vehicle. Some key programming tools also have the capability of analyzing diagnostic trouble codes from your vehicle. This can aid in repairing or resolving other problems.