We have an '06 Mustang and an '05 Expedition. Is there a factory or aftermarket keyless entry remote that will control both vehicles?

 

The factory one *should* work both cars if you programm them correctly.

Problem is though, if both cars are near each other in the driveway & you press UNLOCK, both cars will unlock at the same time lol

 

I know how to program a remote for a particular car, but I how do I program the same remote for both cars?

 

do it twice. [&:] once for each car. [&:] I would think that should work, since the remote doesn't get programmed, but the car does. [&:][&:][&:][&:][&:]

 

most cars, you can't do this, unless by chance they are on the same frequency, it works the same way the chip in the key does, if its not the same it won't work, but you can try it, maybe you'll be lucky

 

^^^it would seem unsafe if you could just program a mustang key to open a dif car......

i dont think that would be possible, but there probably an aftermarket solution for that

sorry i couldnt be of more help

 

ford only makes like 12 different frequencies for their keyless remotes, so 1 in 12 cars could very possibly open your car too.

Gm is very similar, my BF locked his keys in truck one time (95 sonoma), and my aunt's key unlocked it (2004 suburban)