If you're okay with leaving the key near the car you could buy a small faraday cage. Put the key in the faraday cage, hide it somewhere under the car, or near the car, and you should be okay.
No idea if this one is good, just first hit on Amazon. https://www.amazon.com/Upgraded-Faraday-TICONN-Premium-Protector/dp/B07MDF5TX9
Try a faraday key pouch Faraday Bag for Key Fob (2 Pack), TICONN Faraday Cage Protector - Car RFID Signal Blocking, Anti-Theft Pouch, Anti-Hacking Case Blocker (Carbon Fiber Texture) https://smile.amazon.com/dp/B07MDF5TX9/ref=cm_sw_r_cp_api_glt_fabc_3YBBSCHA477Y2H1MMVZK
Damn, that really sucks, hope they find the Cherokee in good condition. Haven’t had that happen, but bought a pair of these from Amazon after reading similar stories from other people. I keep my fobs in them whenever I’m not driving.
Faraday Bag for Key Fob (2 Pack), TICONN Faraday Cage Protector - Car RFID Signal Blocking, Anti-Theft Pouch, Anti-Hacking Case Blocker (Carbon Fiber Texture) https://www.amazon.com/dp/B07MDF5TX9/ref=cm_sw_r_cp_api_i_BYCTYET6GSCEQ2T6HE32 I have an old keyless fob so I’m going this route lol
I separate the valet key from the fob and then leave the fob in the car using a faraday bag that blocks signals. I used to just wrap the fob in aluminum foil but I upgraded to this: https://www.amazon.com/dp/B07MDF5TX9/ref=cm_sw_r_cp_api_i_dl_FPJNF940CE7F805PW5MX?_encoding=UTF8&psc=1
Remove the physical key portion from the fob and hide it under the car - it will let you unlock the front door only. It’s tiny so it’s easy to zip tie in a hidden spot.
Then put the rest of the fob inside of a faraday bag and hide that somewhere inside the car. The faraday bag will prevent the car from recognizing the key as inside.
This worked great for me.
I have: Faraday Bag for Key Fob (2 Pack), TICONN Faraday Cage Protector - Car RFID Signal Blocking, Anti-Theft Pouch, Anti-Hacking Case Blocker (Carbon Fiber Texture) https://www.amazon.com/dp/B07MDF5TX9/ref=cm_sw_r_apan_glt_fabc_MW4MAYSMSJTZK6PWXQT5?_encoding=UTF8&psc=1
Faraday Bag for Key Fob (2 Pack),... https://www.amazon.com/dp/B07MDF5TX9?ref=ppx_pop_mob_ap_share
Faraday Bag for Key Fob (2 Pack),... https://www.amazon.com/dp/B07MDF5TX9?ref=ppx_pop_mob_ap_share
Faraday Cage, or throw your keys in the fridge in the meantime, the battery will suffer a little but it should block the signal, this article from PopSci covers it from 2 years ago.
Faraday Bag for Key Fob (2 Pack), TICONN Faraday Cage Protector - Car RFID Signal Blocking, Anti-Theft Pouch, Anti-Hacking Case Blocker (Carbon Fiber Texture) https://www.amazon.com/dp/B07MDF5TX9/ref=cm_sw_r_cp_api_glt_fabc_AC8DX4EQWYQV6XYNW9R1
Faraday Cage for the keyfob is the best defense....
Thank you for the help! Sounds like this is the easiest solution. Any suggestion on the RFID bag? This one is the best seller on amazon: BAG
You can buy faraday pouches that you can keep your fob in when at home to prevent this from happening. I bought one on amazon for my car and unfortunately still seems to unlock the car when I’m close enough to the car despite the fob being in the pouch. I wonder if anyone has one that is actually effective.
rfid bags are cheap though....