Same problem with my ND key fob, using spare key at moment until I get new cells later today. Car is under 3 years old.
The green key light will flash 5 times when you turn the ignition off to warn you of a low key battery.
Yup. Mine did. Had bought some new batteries today anyway but just in case before checking as above!
Fitted new battery and green key light no longer flashes.
Cheers Robbie.
Definitely don’t remember seeing it do that …
Actually I think mine did that. Obviously I ignored it as I’d rather endure root canal surgery than try to find anything in the useless handbook .