My 2015 car does not have KESSY, and, from what I have read about it, it seems to be more trouble than it's worth. Recently I got the change key battery message and changed the battery accordingly. I have owned the car from nearly new, and this is the first time that I have had to change a key battery, with the car now being almost exactly five years old.

 

Not knowing what condition the other key battery was in I decided to fit a new battery in the spare key and transfer the old battery from the spare to the key that I always use. I now feel confident that the battery in the spare key is OK, and should get a message when I need to replace the one in the usual key.

 

I also replaced the shell of the key, as the old one was starting to disintegrate on the side where the buttons are. I find this a bit surprising, as the keys of my old 2007 Octavia are still intact after 13 years.

 

As a minor aside, anyone know the battery type for the pauper spec “standard” key, the one where you have to press a button to lock or unlock the door?  The manual just says “the battery” and doesn’t specify the type.

Edited 6 September, 20205 yr by DSL

15 minutes ago, DSL said:

As a minor aside, anyone know the battery type for the pauper spec “standard” key, the one where you have to press a button to lock or unlock the door?  The manual just says “the battery” and doesn’t specify the type.

Unless things have changed in recent months it’ll be a 2025 as fitted across the VW range for many years.

 

However, I doubt you’ll be troubled in the near future by a battery change as a 10 year battery life is not uncommon In those fobs.

Many thanks, that’s good to know.  

2 hours ago, Berisford said:

Unless things have changed in recent months it’ll be a 2025 as fitted across the VW range for many years.

 

However, I doubt you’ll be troubled in the near future by a battery change as a 10 year battery life is not uncommon In those fobs.

 

The battery which I just replaced at 5 years old was that type. Not so impressed with the life of the fob having just replaced its shell. Maybe it has suffered from spending a lot of time in my trouser pocket, as I always like to keep my keys with me. Occasionally I have found all the car windows open which I think is due to the unlock button getting pressed accidentally. I have now got a small Faraday pouch for the key which should solve this problem and maybe give the key some extra protection.

 

I too always keep the keyfob in the trouser pocket, together with house keys and change. So my wife has sewn a custom pouch made of thin leather. The keyfob never leaves the pouch, as the Kessy function works unhindered and I can locate the right button through the thin leather when I need it (to temporarily disable Kessy or to open all four windows).

 

Keyfob like new after 16 months.