Key FOB Question

[Northern Mi Rich]

Hi all - possibly a dumb question: I Have a 2021 Yukon SLT - and I clearly don’t have a lot of experience with fobs... I traded in my 10 year old Expedition which didn’t have the fancy fob features and buttons that this GMC has! Here’s the question - when taking multi-day trips I take both keys, and normally would ‘hide” the second key somewhere in the vehicle in case the first key gets lost. Knowing that the GMC fob has features such as unlocking of door when the fob is nearby etc, is it a problem to have the second fob somewhere in the vehicle? Or does that cause problems? Thanks.

 

[drakon543]

generally if it "sees" the fob inside the vehicle if you try to lock the doors it will unlock them again. the only other issue would be if you have push button start. typically doesn't matter where the fob is located just as long as it thinks its inside the vehicle.

 

[Jimmyy]

You could and should get a faraday bag/case. This will block the signal from the fob. If the internet is correct ( why would someone lie on the internet) these fobs transmits your “code” every few seconds. Someone with skills could grab and copy you fob signal and open/steal your truck. Maybe someone with more info can chime in.

 

[tomgilk]

Just take the battery out and keep it separate within the car.

 

[yukontruckman]

Better yet, install the myGMC App. You can remote lock and unlock your doors via Onstar free for the first 5 years.

Edit: read quickly and didn't realize you were concerned about losing keys. Was thinking concern was not being able to unlock the truck.

 

[Dogged]

Removing the battery is the sure fire way of doing this. You can also try wrapping it in a few layers of foil and placing it about mid-cabin (away from the steering column / doors / rear proximity sensors). This may attenuate the signal enough that it would not think it's still in the cabin, like the aforementioned faraday box.

Note, don't leave the "dead" keyfob in the cup holder. There's a sensor there that will allow a dead fob to start the car.

 

[Northern Mi Rich]

Thanks everyone! Short term I’ll try foil. Long term I’ll look for the faraday box.

 

[Jimmyy]

This is the video I seen that talks about using a faraday case all the time. He’s a little long winded but makes a good case.