What Freud Can Teach Us About Key Repair
How to Repair a Remote Key
Even though most remote key fobs boast impressive battery lifespan, they eventually wear out. Sometimes it's as easy as changing the batteries, but occasionally there are more serious issues.
Remove the remote from the unit and clean the buttons. Then, flex them out and in. These steps could be all you need to get your key fob to work.
If the fob is still functioning you can replace the CR2025 or CR2032 battery. If it's not then you can remove the fob and check the buttons and battery terminals for any indication of looseness or broken parts. The terminals and buttons can be soldered back in place but you'll need be aware of the type of battery the fob is using.
If you're not sure whether the battery is the issue then make use of a backup fob to unlock or start your car. If it's possible, it's time to replace your primary fob. If not, a professional check is required to determine why it's not functioning properly. It could be a simple reconfiguration, or it may require other types of repairs. You may also find that your vehicle has lost the fob. This is not something you can tackle by yourself.
Case
The case of a remote key is the outer plastic housing and typically comes with the button pad that is replaced. It is recommended to use a brand new case, as the original is likely to be very filthy. Also, it is crucial that the circuit board in the case is placed correctly. The circuit board is what controls the key fob's function. You can test it with an instrument set to RF (radiofrequency) mode, and a radio scanner that is tuned to the same frequency as the key fob.
Another thing to check is the contact points for buttons on the keypad, which could be loose or damaged over time. Soldering them back in place will often allow them to return to their original function, unless they break completely.
Buttons
If the buttons on your key fob no longer work or are difficult to press, a dorman or motormite remote key housing replacement can be purchased for a low price online for the year/make/model you have. Then, you can take the circuit board out of your old case and put it into the new one. You may have to slightly alter the position of the board on some models. You can then use aluminum foil with double sided tape to stick to the black contact points on the buttons.
Programming
The key fob and receiver in your car are connected however this connection could be ruined. A professional will examine the car to determine the manufacturer, year of the vehicle, year of manufacture and model. They use specialist equipment to re-pair or program a blank fob or transponder chip (or duplicate a key in the event that it is possible). Then, they test the remote to make sure it functions.
When reprogramming blank keys, it is important to be careful. The process can be complicated and each manufacturer offers different instructions. It is also possible to skip a step or wait too long before exiting the programming mode, therefore it is best to use an expert with a thorough understanding of the security system of your vehicle to reduce the chance of damaging your car. Certain key programming tools can also identify diagnostic trouble codes in your vehicle. This can help you solve other issues.