Can anyone suggest why one of my ignition keys is not working. I have tried using a 2025 battery which works in the 2 other keys. The key was working fine until recently. It has not been subject water ingress. Any fixes to suggest?

5 hours ago, Neillybeg said:

Can anyone suggest why one of my ignition keys is not working.

What do you mean not working?

Remote unlock/lock doesn't work?

If not KESSY, key turned in ignition doesn't start car?

If KESSY, key in car but car doesn't start when pressing start button?

BTW I always use a CR2032 from a reputable battery manufacturer like Duracell - the Octavia 3 seems very sensitive to battery condition and even brand new batteries from some manfacturers don't work.

You might want to check the battery spring tension as these can work loose

Thanks will check that

try a CR2032?..a little thicker so have to press the cover closed a bit more firmly after replacement. Recently worked for me on one of my 3 keys..the one I always use.