How to Repair a Remote Key
Although many remote key fobs boast an impressive battery life, they do eventually wear out. Some times it is simple to replace the batteries in the device but sometimes the issue could be more serious.
Remove the remote from the unit and clean the buttons. Then, flex them in and out. These methods could be all that you need to get your key fob working properly.
Battery
If the fob continues to working, you can swap out the CR2025 or CR2032 battery. If it isn't, you can open the fob and examine the battery terminals and buttons to look for signs of wear or damaged parts. The terminals and buttons can be repaired by soldering them back into place, but you'll need to be aware of the kind of battery your fob uses.
If you're unsure whether the battery is at fault, make use of a backup fob to start or unlock your car. If you're able to do so, it's probably time to replace your primary fob. If not require replacement, 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 repair. There's also the possibility that your car has forgotten your fob, which isn't something you can fix yourself.
Case
The plastic housing that covers the outside of a remote is called the case. It typically comes with an alternative button pad. It is recommended to purchase the latest case as the original will likely to be extremely dirty. Additionally, it is vital that the circuit board in the case is correctly placed. car key fob repairs is what determines the function of the key fob. 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 examine is the contact points for buttons on the keypad. They might have become damaged or loose in the course of time. Soldering them back in place can often restore them to full function, unless they break completely.
Buttons
If the buttons on your key fob aren't working anymore or are difficult to push, you can purchase a replacement dorman or Motormite remote key housing online at the lowest price for your model/year/make. Then pop the circuit board from your old case into the new. For certain models it may be necessary to adjust the position of the board slightly. The black contact points of the buttons can be bonded to with aluminum foil and double-sided tape.
Programming
The key fob and receiver inside your car are paired however, this connection may be damaged. A professional will inspect your car to determine its year, make and model. They will then use specialist equipment to reconnect or program the transponder chip with a blank fob (or clone the key if possible). Then they will test the remote to make sure it works.
When reprogramming blank keys, it is important to take care. The process is complex and each manufacturer has distinct instructions. It is also possible to miss a step or take too long to exit the programming mode, so it is recommended to work with an expert with a thorough understanding of your car's security system to avoid harming the car. Some key programming tools can also read diagnostic trouble codes in your vehicle. This will help you solve other issues.