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How to Repair a Remote Key

Although most remote key fobs have amazing battery lives, they'll eventually run out of battery. Sometimes it's simple to replace the batteries in the device, however sometimes the issue could be more severe.

An easy fix that could help is dismantling the remote, cleaning the buttons and moving them in and out. These techniques may be all that you need to get your key fob working properly.

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If the fob continues to functioning it is possible to swap out the CR2025 or CR2032 battery. If it isn't then you can remove the fob and inspect the batteries' terminals and buttons for any signs of looseness or broken parts. It is usually possible to solder the buttons and terminals back into place. However, you will need to know what kind of battery is being used in the fob.

If the battery isn't the issue Try using a backup key fob to see whether you can unlock or start your vehicle with it. If it's possible, it's time for a replacement of the primary fob. If not, a professional check is required to determine why it's not working correctly. It could be as easy 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 on your own.





Case Study

The case of remote keys is the plastic housing that covers the outside and typically comes with the replacement button pad. It is best to use a brand new case, because the one you have will likely to be extremely filthy. Also, it is vital that the circuit board within the case is placed correctly. 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 holding a radio scanner tuned to the same frequency that the key fob is using close to it, and listening for signals that pulsate upon the button's presses.

Examine the contact points of the buttons on the keypad. They could be loose over time or broken. Soldering them back in place can often restore them to their original functionality, except if they break completely.

Buttons

If the buttons on your key fob aren't working anymore or are difficult to press, you can buy a replacement dorman or Motormite remote key housing online at a low cost for the model/year/make. Then, pop key repair service out of your old case and insert 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 and double-sided tape to adhere it to the black contact points on the buttons.

Programming

The key fob and receiver inside your car are connected however this connection could be damaged. A professional will examine the car to determine the manufacturer, year model, year and model. They will make use of specialist equipment to repair or program the fob with a blank transponder chip (or duplicate a key if this is possible). Then they will test the remote to make sure it functions.

When programming blank keys it is essential to take care. The process is complex and each manufacturer has different instructions. It is also possible to miss a step or delay too long before leaving the programming mode, so it is recommended to work with an expert with a thorough understanding of your car's security system to minimize the risk of damaging the car. Certain programming tools that are essential to use can also read diagnostic trouble codes in your vehicle. This can assist you to repair or troubleshoot other issues.