Alarm key fob repair

One of the reasons why your car's electronic key may not work is wear and tear on the electrically conductive coating of the rubber buttons. This problem is typical for all key fob models, but, fortunately, it can be eliminated. I want to share my experience of how I resolved this issue.

Necessary tool

In order to restore the ability of rubber buttons to make contacts, you will need the following materials and tools:

• Aluminium foil.
  
• A small amount of glue.
  
• Hole puncher.

Key fob repair

First you need to carefully disassemble the key body. Most often it is assembled with latches that are opened with a knife.

The next step is mechanical cleaning of the rubber buttons on the reverse side from possible dirt and remnants of the previous metallized coating. I also recommend degreasing the buttons after cleaning them with a small amount of alcohol (it is better not to use gasoline for rubber products).



Now, using a hole punch, you need to make the number of aluminum points necessary for repair, which will serve as contacts.


I used superglue to glue the dots to the rubber buttons, but such a rigid connection became unusable after a few weeks, so I used flexible rubber glue to repair it again.It takes longer to dry, but the adhesive seam is elastic and therefore more resistant to pressure. After this repair, I have been using the key fob for several months now, no complaints yet.


That's all the repair tricks, I hope my experience will help you solve a similar problem and restore the functionality of your car's electronic key.
Original article in English