Nissan Juke 2020 N-connecta. Key fob battery

HARRY_KARRY

Hi! All. Had my car serviced and MOT'd last week at Nissan. I used the spare key fob (first time use) to take car to dealership. On picking car up, got message on dash saying low key fob battery. Battery has since been replaced twice. Latest today. Same message again. 
Other key fob (in use since bought car) works fine, no problem. Any thoughts, ideas, solutions? 

Harry Karry

baser999

Try swapping batteries between the two fobs, what does that do? If that doesn’t resolve it, it’s probably fair to say there’s an issue with the actual fob

chrisw

Make sure you buy decent branded batteries. I had similar issues using pound shop batteries, a Duracell one fixed it. As above, swapping the batteries should give an indication.

Car_54

I had the same problem with an Audi A3. It turned out to be a known bug with the car’s software.

Worth a look on more technical forums, owners’ clubs etc.

Jaybee_16

When I had that message on my Ford, I changed the fob battery but the message still displayed for a short period. After a while the message disappeared once the system had caught up.

HARRY_KARRY

Thanks Baser, Chris, Car54 and Jaybee for your views/comments/suggestions. No luck so far with battery change.
It was odd that it went in for service ok! Came out with fault. I have given feedback to Nissan UK and dealership lead.
No response from latter. At least I have one fully functioning key fob, that works fine. Happy Crimbo. HJM