Sure enough I get a "Fob Not Recognized" message last night when moving it inside for my better half to avoid the first freeze of the winter. And it's so dark & cold I can't even discern where the heck to place it.

 

Question for those with expertise in this topic: how vulnerable are JLR’s key fobs to attacks like relay attacks? A neighbor got their G-Wagen stolen and from the looks of it it was a hacking job, which made me curious and go down the rabbit hole of modern key fobs and their vulnerabilities. So trying to understand what our key fobs do or don’t (e.g., go into sleep mode after the fob has been static for a certain amount of time) and how that changes by model year as I assume as these things evolve newer cars might have more protecting measures. Any insight would be helpful, as I am getting paranoid and looking at Faraday boxes to keep our car fobs in the house 🙂.

 

Land Rover (JLR) key fobs, particularly in newer models, feature sleep modes or motion-sensing technology to prevent keyless relay theft, where thieves boost the signal to unlock vehicles.

Key Fob Sleep Mode & Security Features

• Motion-Sensing Fobs: Newer Land Rover key fobs (generally 2018-2021+ depending on model) have built-in motion sensors. If the fob remains stationary for a few minutes, it will automatically go to sleep and stop transmitting signals.

 

A bump on this. I’m also running into a similar issue as of late. I’ve had to replace two FOB batteries this year and I just got another low battery alert this morning. Anyone come up with a solution or even a preferred battery? Think I’ve got a Energizer in there now.

 

Those cheap batteries online are sometimes garbage. Much better to go with a better brand name.

 

Like I’ve said, have an Energizer in there now so not a no-name brand

 

Like you said “you have an Energizer in there now. Doesn’t mean you had an Energizer in there before when you had trouble. Don’t bite back at someone trying to be helpful.

 

No intention of being snippy. Should’ve stated that the last two batteries to go bad were brand new Energizers. They were from the same pack so perhaps I got a bad batch. I’ll check the date on them also. Regardless, have ordered a fresh pack of Duracells to eliminate the batteries themselves as the issue, though hopefully it is the solution

 

No problem. Good luck with the new batteries. I’ve had a bad batch of brand name batteries before.