How to Repair a Remote Key
Although most remote key fobs boast an impressive battery lifespan, they eventually degrade. Sometimes it's as simple as changing the batteries, however sometimes there are more serious problems.
One quick fix that may help is dismantling the remote, cleaning the buttons and stretching them out and in. These methods could be all you require to get your key fob working again.
Battery
Car key remotes are powered by CR2025 or CR2032 batteries, and they can often be swapped out when the fob is operational. If not, inspect the battery terminals or buttons to determine if they are any missing parts. Most of the time, the buttons and terminals can be repaired by soldering them back into place however you'll need be aware of the exact type of battery the fob is using.
If you're unsure if the battery is the issue then utilize a backup fob in order to start or unlock your vehicle. If you can then it's time to replace the primary fob. If it doesn't then you'll require a professional examine it to find the problem. It could be as simple as reprogramming it, or require different types of repairs. There's also the possibility that your vehicle has lost your fob, which isn't something you can fix on your own.
Case
The outer plastic housing of a remote is called the case. It is usually equipped with a replacement button pad. It is recommended to use an entirely new case since the original one is likely to be very grungy. Additionally, it is essential that the circuit board inside the case is correctly placed. The circuit board is responsible for the function of the key fob and can be tested using a standard multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the frequency the key fob operates on next to it, watching for pulsing signals upon pressing the button.
Check the contact points on the keys on the keypad. They could have become loose over time or broken. Soldering them back into place will often allow them to return to full function, except if they snap completely.
Buttons
If the buttons on your key fob aren't working or are difficult to press, you can buy a replacement dorman or Motormite remote key housing online at the lowest price for your model/year/make. Then, simply pop the circuit board out of your old case into the new. It is possible to adjust the position of the board on some models. The black contact points of the buttons can be adhered to using aluminum foil and double-sided tape.
Programming
The key fob is linked with the receiver inside your vehicle. This connection could be damaged. key repairs will examine your car to determine the year, make, and model. They will then use specialist equipment to recouple or program a blank transponder chip or fob (or clone the key if that is possible). Then they test the remote to be sure it works.
When reprogramming keys that are blank it is crucial to be careful. The process is complicated and each manufacturer offers distinct instructions. It is also possible to miss a step or delay too long before leaving the programming mode, therefore it is recommended to hire professionals with extensive knowledge of the security system of your vehicle to reduce the chance of damaging your car. Certain programming tools are also capable of analyzing diagnostic trouble codes from your vehicle. This can aid in repairing or resolving additional problems.