Remote Key Fob fix
Since I had the same issue with both my remotes in 5 years interval I thought this may be a common issue and you may want to know about it (save some money and frustration).
In the above picture you see the PCB inside of the remote (the side away from buttons-facing the battery). Please note, there is a white capacitor (1050J) soldered to the PCB (two pins). In my case one of the soldering joints (the one towards the chip – coincidence maybe) cracked.
The symptoms are intermittent remote operation (sometimes makes contact sometimes doesn’t). Is very difficult to see the crack but if you look carefully (or maybe use a magnifier) you will notice it.
Just touch the pins for no longer than 1-2 seconds with the tip of a soldering station and is good to go for another 10 years.
While you are there clean very well the other side of the PCB (the one facing the buttons) and also lightly clean the backside of the rubber mat (the one with the buttons seen in the picture below).
If you notice the black dot on the back of each button is damaged then is time for a new rubber mat (no need to replace the whole remote).