Leaving on a trip with SWMBO, and asked her to bring along her key in case mine goes missing or something. In other instances when both keys were in the vehicle - the vehicle gets flustered and confused about what's going on.

My initial thought is to wrap her key in aluminum foil.. but figured I'd ask here to see if anyone else has a more elegant solution.

 

No one? Aluminum foil seems to work. It's in-elegant though.

 

I've seen various RF blocking isolation bags online. I suppose the size you'd get would depend on whether or not you're blocking just the one key or a number of them on the same keychain. Something like this comes to mind:

http://amzn.to/2g2ilc1
http://www.fobguard.com/pages/freque...sked-questions

 

I specifically asked about this when I picked up my '17. I was told it wouldn't matter. Yeah, kinda....

At some point the vehicle latched onto using my wife's key instead of mine, at least for all the vehicle settings. Can't say why 'for sure' but I think it's the window of time where a hand is detected in a door handle and keys are present. This happened to be at the start of a long driving leg so I wasn't inclined to get out, lock things and do whatever dance was required to straighten it out. When we stopped for lunch I locked it with my key, that and I made sure to use my key to do both the unlocking from the fob AND to use my door handle with my key closest to open it.

I'm considering keeping a FobGuard bag in the glove compartment to avoid future adventures. I'd just like to know if both the key and the included Porsche keychain would fit in there together.

As a side note, any time you use an RF-blocking container with a phone, make sure you turn the phone completely OFF first. Otherwise it'll drain the battery desperately trying to find a cell tower, GPS signal or the like. I used to run into that when visiting a client at a radio station. The office area in which I worked was damn near a faraday cage and it'd kill my phone's battery capacity damned quick. I learned to either leave it out in the reception area OR just turn it completely off.

I wouldn't expect the key fob to be as susceptible but it'd be worth knowing for sure.

 

I can report that the FobGuard does successfully fit around the key fob with the supplied keychain and emblem attached to it.

You have to fold the keychain behind the key, of course. There's not a lot of extra length, but the velcro inside does close without forcing the material to stretch. And, the most important thing, it does effectively block the vehicle from seeing the key at all.

I had it in my pocket in the pouch, walking up to the car. It did not recognize my having the key when I held the door handle (Entry and Drive active). Nor did pressing on the key buttons (through the pouch) trigger anything from the vehicle. Even opening the velcro ends, reaching in and pressing buttons got no response. It was only after fully removing the key from the pouch that the car would respond to it. So, yeah, it blocks the signals COMPLETELY.

I plan on leaving this in the glovebox for the occasions where my wife would be bringing her key along.